Article
Materials Science, Multidisciplinary
S. Shrikanth, Suresh Neelakantan, Rajesh Prasad
Summary: The elastic properties of crystalline solids are anisotropic. The shear modulus G(n,m) depends on both the shear plane normal n and the shear direction m. This study investigates the anisotropy of the shear modulus within shear planes and presents novel 3D surfaces to represent this anisotropy. It is found that shear planes with G(n,m) independent of m can exist in all crystal systems.
MECHANICS OF MATERIALS
(2023)
Article
Energy & Fuels
Charles Chibueze Ugbor, Peter Ogobi Odong, Aniefiok Sylvester Akpan
Summary: Pre-stack seismic inversion, well log analysis approach and empirical relations were used to estimate geomechanical properties of Ruby field. The study revealed differences in rock properties between reservoir and cap/seal rocks, as well as variations in geomechanical properties across different regions within the field.
JOURNAL OF PETROLEUM EXPLORATION AND PRODUCTION TECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
Jiangang Li, Xiao Lei, Jianhua Ding, Zhixiang Gao, Hua Wang, Yunlong Shi
Summary: The physical and mechanical properties of nanowires are strongly affected by surface effects. This study proposes a continuum theoretical scheme to describe the elastic property of nanowires, taking into consideration the decreasing influence of surface elasticity with increasing distance from the surface.
Article
Chemistry, Physical
Pooja, Ravinder Pawar
Summary: Grain boundaries play a crucial role in the stability and mechanical properties of diamond produced by chemical vapor deposition. This study uses density functional theory calculations to investigate the structure, stability, mechanical, and electronic properties of the sigma 3 [110](111) grain boundary in diamond. The results show that this grain boundary is stable and exhibits similar elasticity and electronic properties to pristine diamond. Molecular dynamics simulations further prove that the grain boundary remains thermally stable even at high temperatures.
INTERNATIONAL JOURNAL OF QUANTUM CHEMISTRY
(2023)
Article
Geosciences, Multidisciplinary
Arqam Muqtadir, Saud Al-Dughaimi, Taqi Alzaki, Jack Dvorkin
Summary: This study compares the P-wave and S-wave velocities obtained under different hydrostatic loading conditions using ultrasonic pulse transmission experiments. The results show significant differences in velocities when a smaller hydrostatic stress is added to axial stress, but these differences become smaller as the hydrostatic stress increases. The findings suggest that laboratory hydrostatic experiments can be used for in-situ velocity estimates even under strong in-situ contrasts between the vertical and horizontal stresses.
FRONTIERS IN EARTH SCIENCE
(2022)
Article
Materials Science, Multidisciplinary
Muhammad Farzik Ijaz, Wataru Tasaki, Hee Young Kim, Shuichi Miyazaki
Summary: Ti-Nb-Fe-Sn alloys with low Nb content near the phase boundary of (& beta; + & omega;)/& beta; were designed to achieve low Young's modulus comparable to human bone based on electron-to-atom ratio, d-electron alloy design concept, and Mo equivalent. The effects of Sn and Nb content on microstructure and mechanical properties were investigated. Both Nb and Sn effectively suppressed the athermal & omega; phase and stabilized the & beta; phase. The composition dependence of Young's modulus and tensile strength were analyzed in terms of phase stability and recrystallization texture. A strong Goss texture was formed in certain compositions, leading to an exceptionally low Young's modulus of 30 GPa in the Ti-5Nb-3Fe-4Sn alloy.
ADVANCED ENGINEERING MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Yunfei Yu, Mo Cheng, Zicheng Tao, Wuxiao Han, Guoshuai Du, Yanfeng Guo, Jianping Shi, Yabin Chen
Summary: The study finds that the elastic modulus of 2D magnetic material FeTe can be modulated through phase engineering, and the elastic modulus is dependent on the thickness of the material. These findings are of significant importance for understanding and applying 2D magnetic materials in nanodevices.
Article
Materials Science, Multidisciplinary
H. Joshi, Tuan V. Vu, Nguyen N. Hieu, R. Khenata, D. P. Rai
Summary: An ab-initio density functional theory (DFT) method was utilized to investigate the elastic and thermodynamic properties of Fe2CoAl under hydrostatic pressure. It was found that the compound exhibits a mixture of covalent and ionic bonds, and shows ductility at all pressures considered, with various mechanical and dynamical properties showing linear changes under different applied pressures.
MATERIALS CHEMISTRY AND PHYSICS
(2021)
Article
Energy & Fuels
Miroslawa Bukowska, Piotr Kasza, Rafal Moska, Janusz Jureczka
Summary: This study presents the complex laboratory measurements of the static and dynamic Young's modulus and Poisson's ratio for Upper Carboniferous hard coals from the Upper Silesian Coal Basin. The results show linear functional dependences between different parameters and significant correlations, providing valuable insights for engineering activities related to coal mining and gas extraction.
Article
Materials Science, Multidisciplinary
Valentin A. Gorodtsov, Valentin G. Tkachenko, Dmitry S. Lisovenko
Summary: This study conducted theoretical and numerical analyses on the extreme values of Young's modulus for six and seven-constant tetragonal crystals based on experimental data, revealing their relationship with anisotropy coefficients and characteristics in different crystal structures.
MECHANICS OF MATERIALS
(2021)
Article
Crystallography
Valentin A. Gorodtsov, Dmitry S. Lisovenko
Summary: This study explores the extreme values of Young's modulus for rhombic crystals and reveals the differences in mechanical properties between different crystal types. Rhombic crystals exhibit significant variations in Young's modulus values, while cubic, tetragonal, and hexagonal crystals display greater rigidity. Furthermore, a classification scheme based on dimensionless parameters is presented for the Young's modulus of rhombic crystals.
Article
Chemistry, Physical
H. Zheng, J. F. Penga, X. Sun, H. M. Xie, Y. H. Ding, W. He
Summary: Direct Energy Deposition (DED), as an emerging additive manufacturing technology, has great potential for repairing high-value components like aero-engine turbine blades. This study comprehensively investigates the microstructure, mechanical properties, and their distribution characteristics near the interface under different DLD process parameters using Direct Laser Deposition (DLD) with GH4169 superalloy powder. The results show that DLD process parameters significantly affect the grain size, grain growth direction, and residual stress, while having less impact on the elastic modulus. The study also reveals nonuniformity in the microstructure near the interface and anisotropy in elastic modulus at the microscale but almost isotropy at the macroscale, without significant differences among the cladding zone, heat-affected zone (HAZ), and substrate. This research provides insights for optimizing the DLD process and improving the microstructure and mechanical properties of laser-repaired components.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Construction & Building Technology
Hangwei Lin, Koji Takasu, Hiroki Suyama, Hidehiro Koyamada, Shilun Liu
Summary: This study investigated the effects of modified fly ash on the mechanical properties and durability of concrete, proposed a new equation relating the elastic modulus and compressive strength of concrete, and confirmed the importance of the quality and substitution rate of recycled fine aggregates in these effects.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Review
Chemistry, Physical
Philippe Cosenza, Richard Giot, Stephen Hedan
Summary: The objective of this review paper is to compare and analyze the data of elastic moduli of clay minerals acquired through different experimental and theoretical methods. The comparison reveals four sets of results, including the estimation of elastic constants of nonswelling minerals through molecular modeling, the sensitivity of elastic properties of swelling minerals to interlayer water, the representation of clay mineral assemblages by values obtained from geophysical or geomechanical data, and the solid nature of the elastic properties of interlayer water.
APPLIED CLAY SCIENCE
(2023)
Article
Multidisciplinary Sciences
Hui Song, Shengjie Fan, Shuiliang Zhang, Minghui Gong
Summary: This study provides a mathematical model for estimating the residual strength of corrosion-resistant concrete in sulfate and dry-wet cycle environments using ultrasonic methods, which is economical and convenient for engineering applications. The results highlight that the primary cause of macroscopic mechanical deterioration is the worsening interface strength. Additionally, the compressive strength and ultrasonic wave velocity of the concrete follow the same trends during sulfate and dry-wet cycles, increasing first and subsequently decreasing. An empirical model of strength deterioration based on ultrasonic velocity was developed and validated, which accurately defines the strength progression. These findings offer an effective calculation method for monitoring the residual strength of corrosion-resistant concrete pavement engineering in a corrosive environment.
Article
Engineering, Mechanical
Masayuki Kamaya
JOURNAL OF PRESSURE VESSEL TECHNOLOGY-TRANSACTIONS OF THE ASME
(2019)
Article
Engineering, Mechanical
Shin-ichi Komazaki, Ryuichiro Jojima, Nanna Muraoka, Shuhei Nogami, Masayuki Kamaya, Chiaki Hisaka, Masaharu Fujiwara, Akito Nitta
FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES
(2020)
Article
Engineering, Mechanical
Gyo-Geun Youn, Ji-Soo Kim, Yun-Jae Kim, Masayuki Kamaya
FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES
(2020)
Article
Nuclear Science & Technology
Koji Miyoshi, Yoichi Utanohara, Masayuki Kamaya
NUCLEAR ENGINEERING AND DESIGN
(2020)
Article
Engineering, Mechanical
Masayuki Kamaya
FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES
(2020)
Article
Mechanics
Masayuki Kamaya
ENGINEERING FRACTURE MECHANICS
(2020)
Article
Materials Science, Multidisciplinary
Masayuki Kamaya, Yohei Sakakibara, Rika Yoda, Seiichi Suzuki, Hirobumi Morita, Daisuke Kobayashi, Kenta Yamagiwa, Tomoya Nishioka, Yuya Maekawa, Tempei Tanakamaru, Hikaru Nagashima, Toshihiro Ohtani
MATERIALS CHARACTERIZATION
(2020)
Article
Nuclear Science & Technology
Koji Miyoshi, Masayuki Kamaya, Yoichi Utanohara, Akira Nakamura
NUCLEAR ENGINEERING AND DESIGN
(2020)
Article
Engineering, Multidisciplinary
Masayuki Kamaya
Summary: This study utilized the reference plastic slope (RPS) method to derive J-values for bi-linear stress-strain curves, estimating the J-values for plastic materials using simple equations and confirming that the developed equations could predict the failure load with an error within 10% in the most unconservative case.
INTERNATIONAL JOURNAL OF PRESSURE VESSELS AND PIPING
(2021)
Article
Engineering, Mechanical
Masayuki Kamaya
Summary: The study investigated the influence of mean strain on the fatigue life of Type 316 stainless steel in a simulated pressurized water reactor primary water environment. The results showed that the presence of a 10.5 wt% martensitic phase and an increase in surface roughness from the application of mean strain did not further reduce fatigue life. The current prediction models were applicable even when mean strain or cold working was applied.
JOURNAL OF PRESSURE VESSEL TECHNOLOGY-TRANSACTIONS OF THE ASME
(2021)
Article
Engineering, Mechanical
Koji Miyoshi, Masayuki Kamaya
Summary: This study investigated the effect of loading sequence on thermal fatigue in a mixing tee and discussed the prediction method of fatigue life. The strain and fatigue damage around the hotspot were analyzed using finite element analysis and crack growth tests. The results showed that the loading sequence and overloads led to a reduction in the fatigue life and an acceleration of crack growth.
JOURNAL OF PRESSURE VESSEL TECHNOLOGY-TRANSACTIONS OF THE ASME
(2022)
Article
Engineering, Mechanical
Masayuki Kamaya
Summary: A maintenance concept of performance-based maintenance is applied to fatigue degradation of stainless steel components in a pressurized water reactor. The fatigue life and crack growth are predicted in order to optimize the inspection interval based on inspection results.
JOURNAL OF PRESSURE VESSEL TECHNOLOGY-TRANSACTIONS OF THE ASME
(2022)
Article
Materials Science, Multidisciplinary
Shin-ichi Komazaki, Kosuke Egami, Masayuki Kamaya, Chiaki Hisaka, Akito Nitta
Summary: A new fatigue testing technique, the Small Bulge Fatigue (SBF) test, was developed and tested on damaged specimens, demonstrating the potential for detecting microcracks induced by the Disk Bending Fatigue (DBF) test.
MATERIALS PERFORMANCE AND CHARACTERIZATION
(2022)
Article
Engineering, Mechanical
Masayuki Kamaya
Summary: The dependence of fatigue strength on grain size was investigated in Type 316 stainless steel. The study aimed to clarify the underlying cause of the dependence of fatigue strength on ultimate strength, particularly in high-cycle fatigue regime. Four different heat treatments were used to obtain varying grain sizes. Results showed that larger grain sizes led to smaller ultimate strength. The strain-controlled fatigue test and crack growth test were conducted at room temperature. It was found that materials with larger grain sizes tended to have shorter fatigue lives, although grain size had minimal influence on crack growth rate. The reduced fatigue life due to larger grain sizes was attributed to an increase in initial crack size after an incubation period prior to crack initiation. It was concluded that while grain size did affect both fatigue strength and ultimate strength, it was not the dominant factor causing the dependence of fatigue strength on ultimate strength.
INTERNATIONAL JOURNAL OF FATIGUE
(2023)
Proceedings Paper
Engineering, Mechanical
Masayuki Kamaya
PROCEEDINGS OF THE ASME PRESSURE VESSELS AND PIPING CONFERENCE, 2019, VOL 3
(2019)
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)
