Article
Engineering, Mechanical
Abhishek Raj, Rahul Kumar Verma, Pundan Kumar Singh, Shaik Shamshoddin, Pinaki Biswas, K. Narasimhan
Summary: Strain path change is a common phenomenon in industrial sheet metal forming processes. Accurately predicting the deformation behavior of materials during such strain paths is challenging. This study focuses on the mechanical characterization of IFHS under multi-axial proportional and non-proportional loading. The results show that traditional yield criteria are unable to accurately predict the behavior of the material, and the Crystal Plasticity Finite Element Method can reasonably capture the change in strain hardening rate in some cases.
INTERNATIONAL JOURNAL OF PLASTICITY
(2022)
Article
Engineering, Mechanical
Shin-Yeong Lee, Seong-Yong Yoon, Jin-Hwan Kim, Kyung-Seok Oh
Summary: This study assesses the performance of conventional and advanced constitutive models in predicting springback for ultra-high strength steel. The elasto-plastic behavior of a martensitic steel sheet sample is characterized to evaluate the conventional stress-strain behavior. Various tests, including uniaxial compression and tension-compression experiments, are conducted to assess the strength-differential effect and hardening fluctuations during non-linear loading paths. Three constitutive plasticity models are calibrated and employed for finite element predictions of springback. The HAH20 model, which considers both SD and NLLP effects, performs the best in predicting forming and springback for martensitic steel.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2023)
Article
Metallurgy & Metallurgical Engineering
Y. Zhu, C. Slater, S. Connolly, D. Farrugia, C. Davis
Summary: Alloy development on a commercial scale has become more expensive and iterative, with a focus on small refinements within known limits. Laboratory-based rapid alloy development is crucial in pushing boundaries. Understanding the strengthening mechanism of an alloy is critical for achieving matching microstructure and mechanical properties.
IRONMAKING & STEELMAKING
(2021)
Article
Engineering, Mechanical
Rita Dantas, Jose Correia, Grzegorz Lesiuk, Dariusz Rozumek, Shun-Peng Zhu, Abilio de Jesus, Luca Susmel, Filippo Berto
Summary: Multiaxial stresses are common in engineering structures, leading to multiaxial fatigue issues with different opinions and models for its description. Experimental research revealed that the multiscale approach by Dang Van and the Susmel model showed high accuracy and correlation in describing the fatigue behavior of S355 structural steel.
ENGINEERING FAILURE ANALYSIS
(2021)
Article
Engineering, Civil
Chengliang Tu, Yongjiu Shi, Kuo Chen, Wenhao Wang, Huiyong Ban
Summary: This study investigates the influence of high-strength steel on the elastoplastic hysteretic behavior of concrete-filled high-strength steel tubes (CFHST). Experimental observations and numerical simulations show that CFHST can still have considerable deformation capacity if the local deformation of the steel tubes develops moderately. The use of high-strength steel delays steel yield and controls concrete damage, resulting in larger pre-peak deformation capacity.
THIN-WALLED STRUCTURES
(2023)
Article
Engineering, Civil
Andi Su, Yajin Wang, Kim J. R. Rasmussen, Leroy Gardner
Summary: The structural performance of S960 ultra-high strength steel non-slender welded I-sections subjected to combined loading is studied. Nonlinear finite element models were created and used to conduct parametric studies. The suitability of existing design rules for lower strength steels to S960 ultra-high strength steel was assessed. The continuous strength method (CSM) was found to offer significantly improved design consistency and accuracy.
ENGINEERING STRUCTURES
(2023)
Article
Mechanics
Shin-Yeong Lee, Jin-Hwan Kim, Frederic Barlat, Hyoung Seop Kim
Summary: Fracture of martensitic steel in hole expansion and stretch bending was predicted using finite element analysis with shell elements. Mechanical experiments were conducted to characterize mechanical properties related to fracture and plasticity. Two fracture models (HC and GTN-shear) were selected and calibrated with load-displacement curves of fracture tests. The GTN-shear model predicted fracture well in the conical hole expansion test, while the HC model predicted fracture well in the stretch bending test. Differences between the two models may result from a non-linear loading path and description of localized necking, as analyzed through triaxiality analysis.
ENGINEERING FRACTURE MECHANICS
(2023)
Article
Engineering, Civil
Yufei Zhu, Xiang Yun, Leroy Gardner
Summary: This paper conducts a comprehensive numerical study on the in-plane member stability and design of non-slender welded I-section beam-columns made of normal and high strength steel. Finite element models are developed to replicate the structural performance of different steel grades, and a parametric study is carried out to generate extensive numerical data. The study also evaluates the accuracy of current design methods and proposes new design proposals that provide more accurate and consistent resistance predictions for non-slender welded I-section members.
THIN-WALLED STRUCTURES
(2023)
Article
Mechanics
Hugo C. Biscaia, Rui Micaelo
Summary: This study proposed a numerical model to analyze the cyclic bond performance between Carbon Fiber Reinforced Polymer (CFRP) and a steel substrate. Simulations showed that the strength of CFRP-to-steel joints is not affected if the overlapped bonded joint is long enough, while the length of other anchorages could affect the strength or ductility of the joint.
ENGINEERING FRACTURE MECHANICS
(2022)
Article
Engineering, Civil
Marios-Zois Bezas, Jean-Francois Demonceau, Ioannis Vayas, Jean-Pierre Jaspart
Summary: The study investigates the stability of columns made of large angle profiles in high strength steel under different loads through experimental tests and numerical simulations, followed by an evaluation of the design member resistance according to Eurocodes.
THIN-WALLED STRUCTURES
(2021)
Article
Engineering, Civil
Zeqiao Luo, Yu Shi, Xuanyi Xue, Honglong Li, Jinyong Xu
Summary: This paper systematically investigates the patch loading resistance of plate girders with different high-strength steels. A numerical modelling method is proposed to reveal the resistance performance, and validation experiments are conducted. The effects of key parameters on resistance are analyzed, and the design methods in different standards are evaluated and modified.
Article
Mechanics
Masaki Omiya, Seiya Arakawa, Zhenduo Yao, Mayu Muramatsu, Shinnosuke Nishi, Kenji Takada, Masanobu Murata, Kazuaki Okato, Kensuke Ogawa, Kai Oide, Takaya Kobayashi, Jike Han, Kenjiro Terada
Summary: This study investigates the effects of material strength and notch shapes on crack initiation and propagation behaviors in AHSS sheets used in car body structures. The results show that the crack initiation and propagation behaviors strongly depend on the material strength and notch root radius.
ENGINEERING FRACTURE MECHANICS
(2022)
Article
Mechanics
Han Wang, Liwei Wu, Junbin Guo, Chuanqiang Yu, Yayun Li, Junti Wang, Zhihao Liu
Summary: In this paper, a general anisotropic plastic model for sheet metals is proposed in the non-ordinary state-based peridynamics. The model is verified and analyzed by combining a widely used continuum damage model and a new bond-breaking method based on the classic Hash principles.
ENGINEERING FRACTURE MECHANICS
(2023)
Article
Engineering, Civil
Wenying Zhang, Xiangzhi Xu, Yang Liu, Cheng Yu, Xuechun Liu, Zhiqiang Xie
Summary: The North American specifications provide tabulated values and equations for designing cold-formed steel framed shear walls with steel sheet sheathing. Research has shown that increasing the thickness and screw density can enhance the shear strength of high-strength CFS framed shear walls.
THIN-WALLED STRUCTURES
(2021)
Article
Chemistry, Multidisciplinary
Seonghyeon Kim, Aeree Kim, Dongwoo Yoo, Hye-Jin Yoo, Suk-Kyu Lee, Joonwon Kim
Summary: Steel sandwich sheets composed of steel-polymer-steel have been developed as lightweight materials. The study showed improved normal adhesion without adhesives by forming hierarchical structures on the steel sheet surface through electrochemical etching. Adhesion strength increased due to mechanical interlocking, resulting in cohesive failure of the polymer.
Article
Mechanics
Alireza Enferadi, Majid Baniassadi, Mostafa Baghani
Summary: This study presents the design and analysis of an SMP microvalve, where the thermomechanical response of the SMP is investigated using a nonlinear constitutive model that incorporates hyperelasticity and viscoelasticity. The model accounts for fluid-solid interaction and heat transfer in both fluid and solid physics. Numerical simulations are carried out to examine the important characteristics of the SMP valve. The results demonstrate the significance of employing fluid-solid interaction conjugated heat transfer analysis for the efficient development of microvalves in diverse applications.
EUROPEAN JOURNAL OF MECHANICS A-SOLIDS
(2024)
Article
Mechanics
Hridya P. Lal, B. R. Abhiram, Debraj Ghosh
Summary: Higher-order elasticity theories are used to model mechanics at the nanoscale, but the length-scale parameters in these theories need to be evaluated through experiments or MD simulations. This study shows that the length-scale parameter in the modified strain gradient theory varies with dimensions, boundary conditions, and deformation level for carbon and boron nitride nanotubes. To address this issue, a supervised ML-based framework is developed, combining MD simulations, continuum formulation, and ML to predict the length-scale parameter for a given material, dimension, and boundary condition. This predictive tool reduces the need for expensive MD simulations and opens up possibilities for applying non-classical continuum theories to nanoscale mechanics problems.
EUROPEAN JOURNAL OF MECHANICS A-SOLIDS
(2024)
Article
Mechanics
Geng Chen, Shengzhen Xin, Lele Zhang, Min Chen, Christian Gebhardt
Summary: This paper develops a multiscale numerical approach to predict the failure probability of additive manufacturing (AM) structures subjected to time-varied loadings. The approach combines statistical homogenization, shakedown analyses, and reliability methods to consider the influence of microstructural features on load bearing capacity. Through case studies on exemplary structures and different material randomness assumptions, the robustness of the results is confirmed and the mechanism of how micropores influence structural reliability is explained.
EUROPEAN JOURNAL OF MECHANICS A-SOLIDS
(2024)
Article
Mechanics
Guillaume Cadet, Manuel Paredes
Summary: This study proposes a comprehensive solution for calculating the stress field on the surface of a curved beam with a circular cross section, which is crucial for probabilistic fatigue life analysis.
EUROPEAN JOURNAL OF MECHANICS A-SOLIDS
(2024)
Article
Mechanics
Hongshi Ruan, Xiaozhe Ju, Junjun Chen, Lihua Liang, Yangjian Xu
Summary: This paper proposes a data-driven approach to improve the efficiency of computational homogenization for nonlinear hyperelastic materials. By combining clustering analysis, Proper Orthogonal Decomposition (POD), and efficient sampling, a reduced order model is established to accurately predict elastoplasticity under monotonic loadings. The numerical results show a significant acceleration factor compared to a purely POD-based model, which greatly improves the applicability for structural analysis.
EUROPEAN JOURNAL OF MECHANICS A-SOLIDS
(2024)
Article
Mechanics
Pep Espanol, Mark Thachuk, J. A. de la Torre
Summary: The motion of a rigid body, described by Euler's equations in Classical Mechanics, assumes that the distances between constituent particles are fixed. However, real bodies cannot meet this assumption due to thermal fluctuations. In order to incorporate dissipative and thermal fluctuation effects into the description, a generalization of Euler's equations is proposed. This theory explains the origin of these effects as internal, rather than caused by an external thermal bath, and derives the stochastic differential equations governing the body's orientation and central moments.
EUROPEAN JOURNAL OF MECHANICS A-SOLIDS
(2024)
Article
Mechanics
Prateek Chandrakar, Narayan Sharma, Dipak Kumar Maiti
Summary: The current study focuses on the deterioration in thermal buckling performance of variable angle tow laminated (VATL) plates caused by damages in various composite and damage characteristics. Through numerical simulations and surrogate models, it was found that damages reduce the sensitivity of composite properties to buckling response, and a distinctive pattern of buckling response was observed when composite properties vary.
EUROPEAN JOURNAL OF MECHANICS A-SOLIDS
(2024)
Article
Mechanics
Liangteng Guo, Shaoyu Zhao, Jie Yang, Sritawat Kitipornchai
Summary: This study introduces composites reinforced with graphene origami nanofillers into functionally graded multilayered phononic crystals. Numerical investigations reveal that these materials possess negative Poisson's ratio and offer unique mechanical properties, which can be tuned by adjusting the weight fraction and hydrogen coverage of the graphene fillers.
EUROPEAN JOURNAL OF MECHANICS A-SOLIDS
(2024)
Article
Mechanics
Kai Li, Haiyang Wu, Yufeng Liu, Yuntong Dai, Yong Yu
Summary: This paper presents a novel self-oscillating liquid crystal elastomer fiber-beam system that can sway continuously and periodically under steady illumination. The governing equations of the system are established and the self-swaying process and motion mechanism are described in detail. Numerical results show the system undergoes supercritical Hopf bifurcation and the effects of system parameters on the self-swaying amplitude and frequency are discussed quantitatively.
EUROPEAN JOURNAL OF MECHANICS A-SOLIDS
(2024)
Article
Mechanics
Lingkang Zhao, Peijun Wei, Yueqiu Li
Summary: This paper proposes a spatial-temporal fractional order model to study the dynamic behavior of thermoelastic nanoplates in a thermal environment. The model provides a flexible approach to describe the small-scale effects and complex history-dependent effects. Analytical and numerical methods verify the reliability of the model, and the effects of parameters on the dynamic response are discussed.
EUROPEAN JOURNAL OF MECHANICS A-SOLIDS
(2024)
Article
Mechanics
A. N. O'Connor, P. G. Mongan, N. P. O'Dowd
Summary: This research presents an autonomous framework that combines Bayesian optimization and finite element analysis to identify ductile damage model parameters. The framework has been successfully applied to P91 material datasets and demonstrates the impact of algorithm hyperparameters on the resulting non-unique ductile damage parameters.
EUROPEAN JOURNAL OF MECHANICS A-SOLIDS
(2024)
Article
Mechanics
S. V. Sorokin, S. Lenci
Summary: This paper reconsiders the nonlinear coupling between flexural and longitudinal vibrations of ideally straight elastic beams, using a nonlinear theory of curved beams and employing class-consistent boundary conditions. A paradoxical difference in the nonlinear parts of the Duffing equations obtained in the limit of vanishing curvature and in the case of an ideally straight beam is demonstrated and explained.
EUROPEAN JOURNAL OF MECHANICS A-SOLIDS
(2024)
Article
Mechanics
C. Hari Manoj Simha
Summary: Dynamic Mode Decomposition (DMD) can be used to construct deformation fields for linear solids without making constitutive assumptions or knowing material properties. It operates on time-shifted data matrices and selects dominant modes using singular value decomposition. DMD can be used for reconstructing displacement states in elastic solids and identifying the onset of plasticity in elastic-plastic solids.
EUROPEAN JOURNAL OF MECHANICS A-SOLIDS
(2024)
Article
Mechanics
C. Ren, K. F. Wang, B. L. Wang
Summary: An electromechanical model is established to investigate the characteristics of a bilayer structure consisting of a piezoelectric semiconductor film and an elastic substrate. The combined effects of piezoelectricity and flexoelectricity are considered, and closed-form expressions for the distributions of electron concentrations and relevant electromechanical fields are obtained. The effects of interfacial parameter, flexoelectricity, and initial carrier concentration are discussed. The research highlights the importance of the interfacial parameter and the weakening effect of flexoelectricity on the imperfect interface of the bilayer system.
EUROPEAN JOURNAL OF MECHANICS A-SOLIDS
(2024)
Article
Mechanics
Yu Sun, Qiang Han, Chunlei Li
Summary: This paper presents the design of a tunable functionally graded metamaterial beam for flexural wave attenuation through the integration of a piezomagnetic shunt damping system and an inertial amplification mechanism. The proposed system demonstrates tunable and strong wave attenuation capability through local resonance and energy consumption. The theoretical and numerical results verify that the system can achieve significant wave attenuation at defined frequencies and also be optimized for maximal attenuation at various frequency ranges.
EUROPEAN JOURNAL OF MECHANICS A-SOLIDS
(2024)