Article
Materials Science, Multidisciplinary
Qingge Xie, Zhiran Yan, Dunji Yu, Ke An, Xingchen Yan, Shuo Yin, Bobby Gillham, Xiaolong Wu, Ping Yang, Zhengzhi Zhao, Yandong Wang
Summary: In-situ neutron diffraction was used to reveal deformation damage during tension and compression for a high manganese steel. The lattice strains along transverse and loading directions showed indications of damage during tensile and compressive stress, respectively. The distribution of damaged grains was similar to grains with large Taylor factors.
Article
Engineering, Manufacturing
Houman Alipooramirabad, Anna Paradowska, Mark Reid, Reza Ghomashchi
Summary: This study used in-situ neutron diffraction to investigate the effects of holding time on the relaxation of residual strains during Post-Weld Heat Treatment (PWHT) for multi-pass High-Strength Low-Alloy (HSLA) steel welds. The findings suggest that holding time has little influence on strain relaxations, while creep may be the primary cause of stress relaxation during PWHT.
JOURNAL OF MANUFACTURING PROCESSES
(2022)
Article
Chemistry, Physical
Yusuke Onuki, Kasumi Masaoka, Shigeo Sato
Summary: The texture and microstructure formation of a Ca-added alloy, AZX612, during uniaxial tensile deformation at elevated temperatures is reported. The total elongation increases with temperature primarily due to prolonged unstable plastic deformation. The significant elongation at high temperatures is attributable to the relaxation of strain concentration via continuous dynamic recrystallization.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Multidisciplinary
H. E. Coules, S. O. Nneji, J. A. James, S. Kabra, J. N. Hu, Y. Wang
Summary: The study focused on validating constitutive laws for multiaxial deformation, particularly creep deformation, by measuring the evolution of stress tensors within a material. The combination of neutron diffraction and finite element analysis was found to reduce stress uncertainty and provide insights into the accuracy of the creep constitutive model. The study concluded that sequential neutron diffraction stress measurements can be used to validate material constitutive laws in situations involving multiaxial deformation.
EXPERIMENTAL MECHANICS
(2022)
Article
Chemistry, Physical
Yubi Gao, Yutian Ding, Haifeng Li, Hongbiao Dong, Ruiyao Zhang, Jun Li, Quanshun Luo
Summary: The study found that grain refinement can enhance the elastic modulus and yield strength of Inconel 625 alloy, as well as improve the consistency of polycrystalline deformation. The deformation mechanism of coarse-grained samples is mainly influenced by stacking faults and dislocations, while fine-grained samples only involve dislocation slipping.
Article
Materials Science, Multidisciplinary
Longmeng Xu, Yuming Bai, Gaoshang Gong, Fangyuan Song, Zhaohu Li, Yuyan Han, Langsheng Ling, Zhaoming Tian
Summary: The study investigates the anisotropic Hall effect in the longitudinal conical-ordered magnet CeMn2Ge2 and demonstrates the realization of a room-temperature anisotropic topological Hall effect (THE). The findings open up possibilities for designing spintronic devices based on THE.
Article
Nanoscience & Nanotechnology
Zachary N. Buck, Matthew J. Connolly, May L. Martin, Damian Lauria, Jason P. Killgore, Peter E. Bradley, Yan Chen, Ke An, Andrew J. Slifka
Summary: Interrupted tensile tests were performed on an AISI 4130 pressure vessel steel, and the results were investigated using neutron diffraction and scanning microscopy techniques. The study revealed an increase in dislocation densities and a strain-induced phase transformation beyond the ultimate tensile strength. Additionally, the characterization of microstructure and phase fractions using EBSD and SKPFM demonstrated the utility of SKPFM in distinguishing metallic phases with similar crystal structures.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2023)
Article
Nanoscience & Nanotechnology
Hao Yang, Huamiao Wang, Zhaolong Yang, Yalin Huang, Dayong Li, Yinghong Peng, Peidong Wu
Summary: The microstructure evolution of Q&P1180 steel during uniaxial tension was comprehensively investigated, with tiny blocky retained austenite (RA) islands distributed in the matrix transforming into martensite during deformation. Experimental and model discussions focused on the effects of phase transformation on the stress-strain response and texture evolution of Q&P1180.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Materials Science, Multidisciplinary
Ashkan Dargahi, Ryan Schultz, Joel Runka, Hossein Ashrafizadeh, Bo Xu, Hani E. Naguib
Summary: This study focuses on the nonlinear creep characteristics of extruded Poly (vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP) at temperatures between 40 ℃ and 80 ℃, and tensile stress levels of 5 MPa to 12.5 MPa. The results indicate that nonlinearity occurs at around 60 ℃, and relaxation begins at 100 ℃ above the measured glass transition temperature of PVDF-HFP. The Findley power law model is used to develop a generalized temperature-and stress-dependent model, which effectively describes the nonlinear creep behavior of the polymer under different temperature and stress conditions.
MATERIALS & DESIGN
(2023)
Article
Metallurgy & Metallurgical Engineering
Wu Gong, Ruixiao Zheng, Stefanus Harjo, Takuro Kawasaki, Kazuya Aizawa, Nobuhiro Tsuji
Summary: The twinning and detwinning behavior of a commercial AZ31 magnesium alloy during cyclic compression-tension deformation was studied using various characterization techniques. The results showed that the volume fraction and number of residual twins increased with the number of cycles, leading to a decrease in the yield strength of compression deformation.
JOURNAL OF MAGNESIUM AND ALLOYS
(2022)
Article
Multidisciplinary Sciences
Wei-Tin Chen, Chin-Wei Wang, Ching-Chia Cheng, Yu-Chun Chuang, Arkadiy Simonov, Nicholas C. Bristowe, Mark S. Senn
Summary: The phase diagrams of LaMnO3 perovskites have been intensively studied due to colossal magnetoresistance exhibited around the 3th/8 doping level. Phase segregation between ferromagnetic metallic and antiferromagnetic insulating states prevents a complete understanding of the orbital ordered state at this doping level. Through crystallographic analysis, it was found that the superposition of two distinct lattice modes leads to a striping of Mn3+ and Mn3.5+ layers, ultimately causing cancellation of Jahn-Teller-like displacements at the critical doping level and melting of long range orbital order.
NATURE COMMUNICATIONS
(2021)
Article
Materials Science, Multidisciplinary
Takao Ebihara, Jumaeda Jatmika, Atsushi Miyake, Masashi Tokunaga, Koichi Kindo
Summary: This study measured high-field magnetization in CeAl2 and obtained magnetic phase diagrams for different axes. The single-crystal study revealed that phase boundaries within the antiferromagnetic phase varied depending on magnetic field direction. A weak shoulder was observed with a higher temperature than the Néel temperature.
Article
Physics, Multidisciplinary
YiQing Hao, HongLiang Wo, YiMeng Gu, XiaoWen Zhang, YiQing Gu, ShiYi Zheng, Yang Zhao, GuangYong Xu, Jeffrey W. Lynn, Kenji Nakajima, Naoki Murai, WenBin Wang, Jun Zhao
Summary: YbCl3 exhibits a Neel type long-range magnetic order below 600 mK, with a magnetic moment considerably smaller than expected and gradually increasing with a perpendicular magnetic field before being completely suppressed, indicating strong quantum fluctuations in the system.
SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY
(2021)
Article
Chemistry, Physical
Henrik Lund Frandsen, Christodoulos Chatzichristodoulou, Benoit Charlas, Ragnar Kiebach, Kawai Kwok, Poul Norby, Peter Vang Hendriksen
Summary: Experimental results demonstrate that residual stresses in solid oxide cell are relaxed and approach zero during the chemical reduction of the fuel electrode, which is crucial for understanding and modeling stress variation during SOC stack assembly. The in-plane macro-strain and stresses in each layer are determined by in-situ X-ray diffraction, and the relaxation of stresses is attributed to accelerated creep in the nickel phase of the fuel electrode.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Materials Science, Multidisciplinary
Muhammad Awais, William R. Hixson, Quinton Victor, Callahan O'Neal, Jan Ilavsky, James Coakley
Summary: The relationship between microstructure, deformation micromechanisms, and mechanical properties in multimodal size distribution gamma ' superalloys is complex. In situ X-ray scattering has not been utilized in the study of these alloys. This study investigates the lattice parameter evolution of secondary and tertiary gamma ' precipitates in Nimonic 115 and correlates it with SEM and microhardness values.
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
(2023)
Article
Engineering, Multidisciplinary
Yiming Wu, Chang Zhou, Rui Wu, Lixin Sun, Chenyang Lu, Yunzhen Xiao, Zhengxiong Su, Mingyu Gong, Kaisheng Ming, Kai Liu, Chao Gu, Wenshu Yang, Jian Wang, Gaohui Wu
Summary: Aluminum alloys have low yielding and flow strengths, but a super-strong Al-30vol%SiC composite with a flow strength of 1.18 GPa and a uniform strain of 16.0% was reported. The alloy exhibited strengthening from nano-spaced SiC nanowires and high-density stacking faults (SFs) rarely stabilized in Al. SFs showed excellent thermal stability up to 320 degrees C and could be regained by thermal cooling even after elimination during annealing at 600 degrees C.
COMPOSITES PART B-ENGINEERING
(2023)
Review
Materials Science, Multidisciplinary
Jian Wang, Amit Misra
Summary: Heterostructured materials composed of nanoscale phases can enhance both yield strength and strain hardening, leading to uniform distribution of plastic flow. Deformation mechanisms in nanoscale eutectic binary systems enable slip transmission and interface-enabled plasticity, explaining the strength-ductility relationship and distributed plastic flow in multi-component eutectics.
CURRENT OPINION IN SOLID STATE & MATERIALS SCIENCE
(2023)
Article
Nanoscience & Nanotechnology
N. A. Richter, Y. F. Zhang, M. Gong, T. Niu, B. Yang, S. Xue, J. Wang, H. Wang, X. Zhang
Summary: This study presents a solute synergy strategy to stabilize the microstructures and improve thermal stability in high strength nanotwinned (NT) Al-Co-Zr alloys. Zr solute additions promote microstructural and mechanical stability up to 400 degrees C. In-situ microcompression tests demonstrate high strengths and deformability in these ternary NT alloys. Density functional theory calculations provide insight into the interplay between Co and Zr solute and their role in stabilizing incoherent twin boundaries. This work offers a strategy for enhancing both strength and thermal stability of nanocrystalline materials through synergistic solute pairs.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2023)
Article
Nanoscience & Nanotechnology
Bingqiang Wei, Wenqian Wu, Jian Wang
Summary: Ni-SiOC nanocomposites exhibit two characteristic microstructures and display high strength and good plastic flow stability. However, their fracture behavior and plasticity vary under different testing conditions.
SCRIPTA MATERIALIA
(2023)
Article
Chemistry, Physical
Bingqiang Wei, Wenqian Wu, Jian Wang
Summary: Ni-SiOC nanocomposites maintain crystal-amorphous dual-phase nanostructures after high-temperature annealing at different temperatures. Both crystal Ni and amorphous SiOC maintain stability under He irradiation. The amorphous SiOC ceramic is immune to He irradiation damage, contributing to the He irradiation resistance of Ni alloy.
Article
Chemistry, Multidisciplinary
Amanda L. L. Coughlin, Zhiliang Pan, Jeonghoon Hong, Tongxie Zhang, Xun Zhan, Wenqian Wu, Dongyue Xie, Tian Tong, Thomas Ruch, Jean J. J. Heremans, Jiming Bao, Herbert A. A. Fertig, Jian Wang, Jeongwoo Kim, Hanyu Zhu, Deyu Li, Shixiong Zhang
Summary: Enhancement of electron correlation in a topological metal, iridium dioxide, is demonstrated through vanadium doping. The increase in electron correlation is supported by Raman intensity decrease and increased electrical resistivity. The doping also leads to a significant reduction in lattice thermal conductivity. Density functional theory calculations suggest that the reduction in thermal conductivity is due to complex phonon dispersion and reduced energy gap between phonon branches.
Article
Engineering, Manufacturing
Haifei Lu, Weiwei Deng, Kaiyu Luo, Yuhua Chen, Jian Wang, Jinzhong Lu
Summary: An innovative hybrid additive manufacturing (HAM) technology combining laser shock peening without coating (LSPwC) and laser powder bed fusion (LPBF) has been proposed to tailor the microstructure of additively manufactured Ti6Al4V titanium alloys. The experimental results demonstrated that the martensitic laths in the LSPwC-treated region changed to equiaxed ultrafine grains under alternating mechanical and thermal effects. Consequently, compared with the LPBF specimen, the HAM specimen indicated a high ultimate tensile strength of -1303 MPa and an excellent elongation of -12.7 %.
ADDITIVE MANUFACTURING
(2023)
Article
Materials Science, Multidisciplinary
Quan Li, Mingyu Gong, Jiancheng Jiang, Yiwen Chen, Houyu Ma, Yujuan Wu, Yongxiang Hu, Yue Liu, Guisen Liu, Jian Wang, Xiaoqin Zeng
Summary: We quantitatively measured the twinning shear of three twinning modes at an atomic level, allowing us to determine the character of elementary twinning dislocation. These findings not only clarify the twinning mechanisms but also provide a method to determine other complex shear mechanisms at an atomic level.
Article
Multidisciplinary Sciences
John P. Hirth, Dongyue Xie, Greg Hirth, Jian Wang
Summary: Type II and IV twins with irrational twin boundaries were studied in plagioclase crystals using high-resolution transmission electron microscopy. It was observed that the twin boundaries relaxed and formed rational facets separated by disconnections, similar to what was seen in NiTi. The topological model (TM) was required for precise theoretical prediction of the orientation of the Type II/IV twin plane, and predictions were also made for other types of twins. The faceting process provided a challenging test for the TM, but the analysis showed excellent agreement with the observations.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2023)
Article
Nanoscience & Nanotechnology
Tian Zhang, Jie Tang, Shudong He, Fulin Jiang, Dingfa Fu, Jie Teng, Jian Wang
Summary: We experimentally investigated the microstructure evolution and strengthening behaviors of three cold-worked austenitic steels that deform via dislocations, twinning, and stacking faults. It was found that the development of stacking faults and twins acts as kinematical barriers for dislocation motion, which is influenced by stacking fault energy and accumulated dislocations. These factors accelerate the dislocation storage rate, strengthen the alloys, and develop a high strain hardening rate. Therefore, we proposed a nonadditive strengthening equation by combining the dislocation-based two-internal-variable model coupled with kinematical barriers to rationalize the experimental observations.
SCRIPTA MATERIALIA
(2023)
Review
Chemistry, Physical
Bingqiang Wei, Lin Li, Lin Shao, Jian Wang
Summary: Crystalline metals have good deformability but poor strength and irradiation tolerance, while amorphous materials have poor deformability but high strength and good irradiation tolerance. By refining characteristic size, the flow strength of crystalline metals and the deformability of amorphous materials can be enhanced. This leads to enhanced strength and improved plastic flow stability in crystalline-amorphous nanostructures. The high-density interfaces in these nanostructures can trap radiation-induced defects and accommodate free volume fluctuation. This article reviews various crystalline-amorphous nanocomposites and their synthesis, deformation behaviors, and multiscale materials modelling.
Article
Materials Science, Multidisciplinary
Jian Song, Songsong Yao, Quan Li, Jiamiao Ni, Zhuoxin Yan, Kunming Yang, Guisen Liu, Yue Liu, Jian Wang
Summary: Engineering the surface orientation of fcc metals to the {111} plane can enhance their oxidation resistance. In this study, a reconstructed surface layer with the {111} orientation was observed on high-temperature deposited Gr/{001} Cu surface. A surface melting-solidification mechanism dominated by Gr/Cu interfacial energy and promoted by high-temperature surface melting was proposed to explain the surface reconstruction process. These findings suggest a possible strategy to enhance the surface properties of fcc metals through engineering surface crystallography.
Article
Nanoscience & Nanotechnology
Arkajit Ghosh, Wenqian Wu, Bibhu Prasad Sahu, Jian Wang, Amit Misra
Summary: Nano-scale eutectics, such as rapid solidified Al-Si, exhibit enhanced yield strength and strain hardening but limited plasticity. In this study, fully eutectic Al-Si microstructures with heavily twinned Si nano-fibers were synthesized using laser rapid solidification and chemical modification. These microstructures showed high hardness and stable plastic flow, with a mechanism of partial dislocation-mediated plasticity observed in the deformed Si(Sr) fibers. The findings provide insights into the plasticity mechanisms of nano-eutectic materials.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2023)
Article
Nanoscience & Nanotechnology
Guodong Hou, Xu Zhang, Feihong Du, Yadong Wu, Xing Zhang, Zhijie Lei, Wei Lu, Feiyu Zhang, Guang Yang, Huamiao Wang, Zhenyu Liu, Rong Wang, Qi Ge, Jiangping Chen, Guang Meng, Nicholas X. X. Fang, Xiaoshi Qian
Summary: An untethered phototactic soft machine composed of poly(N-isopropylacrylamide) hydrogel blended with graphene oxide and gold nanoparticles can follow the directions of photonic illumination and maneuver through obstacles underwater. This ability is achieved by manipulating photothermal nanoparticles and the polymeric matrix, enabling complex self-regulative behaviors.
NATURE NANOTECHNOLOGY
(2023)
Article
Chemistry, Physical
Xianyun Zhu, Huamiao Wang, Yunxin Wu
Summary: Thermal stress induced by thermal anisotropy in single crystals during heat treatments was examined using a thermal elastic viscoplastic self-consistent model. The study found that constrained cooling significantly increases elastic lattice strain, while polycrystals offer more deformation mechanisms to accommodate thermal anisotropy, resulting in lower applied stress at the constrained boundary.
Article
Mechanics
Zhiqiang Meng, Xu Gao, Hujie Yan, Mingchao Liu, Huijie Cao, Tie Mei, Chang Qing Chen
Summary: This paper presents a cage-shaped, self-folding mechanical metamaterial that exhibits multiple deformation modes and has tunable mechanical properties, providing multifunctional applications in various fields.
INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
(2024)
Article
Mechanics
Hasan Murat Oztemiz, Semsettin Temiz
Summary: Sandwich panel composites have various applications and their mechanical behavior and performance depend on material properties and geometry. The load-carrying capacity of S-core composite sandwich panels increases with the increase of the core wall thickness, but decreases with the increase of the core height.
INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
(2024)
Article
Mechanics
Yang Sun, Wei Zhang, Weipeng Hu, Mabao Liu
Summary: The study presents a novel computational framework to investigate the effect of graphene percolation network on the strength-ductility of graphene/metal composites. It utilizes the Cauchy's probabilistic model, the field fluctuation method, and the irreversible thermodynamics principle.
INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
(2024)
Article
Mechanics
Elaheh Kazemi-Khasragh, Juan P. Fernandez Blazquez, David Garoz Gomez, Carlos Gonzalez, Maciej Haranczyk
Summary: This study explores group interaction modelling (GIM) and machine learning (ML) approaches for predicting thermal and mechanical properties of polymers. ML approach offers more reliable predictions compared to GIM, which is highly dependent on the accuracy of input parameters.
INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
(2024)
Article
Mechanics
Yafei Yin, Shaotong Dong, Dong Wu, Min Li, Yuhang Li
Summary: This paper investigates a bending-induced instability in sandwiched composite structures, and establishes a phase diagram to predict its characteristics. The results are of great significance in understanding the physical mechanisms of bending instability and providing design guidelines for practical applications.
INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
(2024)
Article
Mechanics
Dhairya R. Vyas, Sharen J. Cummins, Gary W. Delaney, Murray Rudman, Devang V. Khakhar
Summary: In this study, multiple collisions of granules on a substrate are analyzed using Collisional Smooth Particle Hydrodynamics (CSPH) to understand the influence of impact-induced deformation on subsequent collision dynamics. It is found that the collision dynamics are dependent on the impact location and the deformation caused by preceding impacts. The accuracy of three theoretical models is also evaluated by comparing their predictions with CSPH results, and it is discovered that these models are only useful for predicting collisions at the same location repeatedly.
INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
(2024)
Article
Mechanics
Sneha B. Cheryala, Chandra S. Yerramalli
Summary: The effect of hybridization on the growth of interface crack along the fiber is predicted. The study shows an enhancement in the compressive splitting strength with hybridization due to the lateral confinement effect on the interfacial crack.
INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
(2024)
Article
Mechanics
Xiang-Nan Li, Xiao-Bao Zuo, Liang Li, Jing-Han Liu
Summary: A multiscale mechanical model is proposed to quantitatively describe the macro-mechanical behavior of fiber reinforced concrete (FRC) based on its multiscale material compositions. The model establishes the stiffness and strength equations for each scale of FRC and demonstrates the influence of steel fiber parameters on the mechanical properties of FRC.
INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
(2024)
Article
Mechanics
Vicente Ramirez-Luis, Hilario Hernandez-Moreno, Orlando Susarrey-Huerta
Summary: In this paper, a Multicell Thin-walled Method is developed for studying the stress distributions in multimaterial beams. This method accurately obtains complex stress fields while reducing the solution time and computational cost. Validation with the finite element method confirms the accuracy of the proposed method.
INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
(2024)
Article
Mechanics
Yanfeng Zheng, Siyuan Li, Jingyao Zhang, Yaozhi Luo
Summary: This study proposes an enhanced simplified model based on finite particle method (FPM) to consider the link cross-sectional size and contact in Bennett linkages. The model introduces virtual beams and contact forces to accurately simulate the real-world behavior of Bennett linkages. The proposed method is effective for dynamic analysis of large-scale deployable Bennett linkages and shows great potential.
INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
(2024)
Article
Mechanics
Viktoriya Pasternak, Heorhiy Sulym, Iaroslav M. Pasternak
Summary: This paper investigates anisotropic elastic, magnetoelectroelastic, and quasicrystal solids and presents their equations of time-harmonic motion and constitutive relations in a compact and unified form. A matrix approach is proposed to derive the 3D time-harmonic Green's functions for these materials. The effects of phason field dynamics on the phonon oscillations in quasicrystals are studied in detail. The paper provides a strict proof that the eigenvalues of the time-harmonic magnetoelectroelaticity problem are all positive. It also demonstrates the application of the obtained time-harmonic Green's functions in solving boundary value problems for these materials using the derived boundary integral equations.
INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
(2024)
Article
Mechanics
Jan Tomec, Gordan Jelenic
Summary: This paper investigates the relationship between different formulations and contact-force models in beam-to-beam contact mechanics. It specifically addresses the recently developed mortar method and develops its variant based on the penalty method. The developed elements are tested using the same examples to provide an objective comparison in terms of robustness and computational cost.
INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
(2024)
Article
Mechanics
Paulo Teixeira Goncalves, Albertino Arteiro, Nuno Rocha, Fermin Otero
Summary: This work presents a novel formulation of a 3D smeared crack model for unidirectional fiber-reinforced polymer composites based on a stress invariant approach for transverse yielding and failure initiation. The performance of the model is evaluated using monotonic and non-monotonic damage evolution, verified with single element tests and compared with experimental results.
INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
(2024)
Article
Mechanics
Hanbin Yin, Yinji Ma, Xue Feng
Summary: This paper investigates the peeling behavior of a viscoelastic film bonded to a rigid substrate and establishes a theoretical peeling model. The study reveals three typical relationships between the peeling force and peeling velocity, which depend on the viscous dissipation within the film and the rate-dependent adhesion at the interface. Additionally, factors such as film thickness, interfacial toughness, and interfacial strength are identified as influencing the steady-state peeling force.
INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
(2024)
Article
Mechanics
Peter Noe Poulsen, John Forbes Olesen
Summary: Finite Element Limit Analysis (FELA) is increasingly used to calculate the ultimate bearing capacity of structures made of ductile materials. This study presents a consistent and general weak formulation based on virtual work for both the lower and upper bound problem, ensuring uniqueness of the optimal solution. A plane element with linear stress variation and quadratic displacement field is introduced, showing good results for load level, stress distribution, and collapse mechanism even for coarse meshes in verification and reinforced concrete examples.
INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
(2024)
