Article
Mechanics
Yu-Jui Liang, Carlos G. Davila, Endel Iarve
Summary: The cohesive zone model integrated into the Rx-FEM framework allows for accurate prediction of crack initiation and propagation using S-N stress-life curves. This method offers practical advantages over traditional Paris law in terms of simplicity and predictability by relying on intrinsic relationships between stress-life curves and crack propagation.
COMPOSITE STRUCTURES
(2021)
Article
Engineering, Mechanical
K. Bounif, M. Abbadi, M. Nouari, R. Selvam
Summary: Cracking wear is a major phenomenon affecting the lifetime of cutting tools, with delamination being an inevitable outcome of crack propagation. Numerical analysis showed that cracks are more likely to deflect at the interface than penetrate into the substrate, and the characteristics of the coating can protect the tool from cracking.
ENGINEERING FAILURE ANALYSIS
(2021)
Article
Construction & Building Technology
Xiangyu Xu, Zhijun Wu, Hao Sun, Lei Weng, Zhaofei Chu, Quansheng Liu
Summary: A numerical manifold method (NMM) based simulator was developed to evaluate the effectiveness of grouting reinforcement in deep rock tunnels, incorporating various algorithms and models to simulate migration and coagulation processes, and demonstrating good agreement with analytical solutions and laboratory observations.
TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY
(2021)
Article
Engineering, Biomedical
D. R. Nolan, C. Lally, J. P. McGarry
Summary: This tutorial paper provides a comprehensive guide to understanding the different forms of deformation gradient used in Abaqus, and highlights the importance of a precise understanding of the nonclassical deformation gradient for the development of a hyperelastic UMAT.
JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS
(2022)
Article
Engineering, Chemical
Yuyang Liu, Xiaowei Zhang, Wei Guo, Lixia Kang, Rongze Yu, Yuping Sun
Summary: Low-permeability reservoirs play a crucial role in the future growth of oil and gas reserves and production in China. This paper presents a method for predicting the effective stress field in ultralow-permeability reservoirs through reservoir-geomechanics coupling. By simulating and coupling the tectonic stress and pore pressure fields based on 3D geological models, the sigma(e) value in the reservoir can be predicted.
Article
Engineering, Civil
Li-Jing Yang, Fu-Ping Gao, Chang-fei Li
Summary: This study investigates the instantaneous liquefaction of a non-cohesive seabed under the combined loading of 3rd order Stokes waves and a steady current in coastal environments. The research finds that wave nonlinearity has a significant effect on the instantaneous liquefaction depth, especially when the wave height increases and the current velocity decreases. Superimposing an opposing current can be beneficial for preventing instantaneous liquefaction.
COASTAL ENGINEERING
(2023)
Article
Chemistry, Physical
Yann Charles, Sofiane Benannoune, Jonathan Mougenot, Monique Gasperini
Summary: The study demonstrates that the Generalized Oriani39's Approximation (GOA) scheme can accurately estimate the trapped concentration in transient trapping processes in Abaqus Finite Element software, especially for hydrogen in metals and water in polymers. Through examples of simple configurations, the application of the GOA approach in handling various trapping parameters is illustrated, along with an analysis of Abaqus' ability to converge in modeling transient trapping and transport problems.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Engineering, Multidisciplinary
Erick Montes de Oca Valle, Mark Spearing, Ian Sinclair, Trevor Allen, Warren Hepples
Summary: This paper presents simulations and experimental validation of a 3D finite element model for a metal-composite ring structure subjected to quasi-static indentation, used as a proxy for low velocity impact. The model focuses on modeling composite ply delamination and metal-composite separation using cohesive elements. The model was calibrated and validated using a hybrid metal-composite ring at reasonable engineering length-scales. The numerical results are in good agreement with experimental values.
INTERNATIONAL JOURNAL OF PRESSURE VESSELS AND PIPING
(2023)
Article
Engineering, Multidisciplinary
Shukai Ya, Sascha Eisentrager, Chongmin Song, Jianbo Li
Summary: The article introduces the implementation of polyhedral elements based on the scaled boundary finite element method (SBFEM) into the commercial finite element software ABAQUS, and demonstrates the advantages of polyhedral elements in handling non-matching interfaces and automatic mesh generation through numerical examples.
COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING
(2021)
Article
Engineering, Chemical
Dijie Zhu, Wenda Li, Dong Niu, Hecheng Xiao, Xiaoxia Song
Summary: Indirect fracturing using a horizontal well to fracture roof rock into coal is a promising technology for coalbed methane surface exploitation. A numerical model was established to study the propagation law of hydraulic fractures across the coal-rock interface, and practical engineering in a 3# coal seam in the Xinjing mine was used to determine the range of the horizontal well position for indirect fracturing.
Article
Construction & Building Technology
Li Wang, Gang Zheng
Summary: This paper simulates the compaction grouting process using coupled pore fluid diffusion/stress analyses and conducts parametric studies to evaluate the heave and subsidence induced by grout injection and tunneling. Additionally, the soil arching effects in the treated zones are also examined. The proposed guidelines will help engineers pursue a safe and cost-effective grouting scheme.
TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY
(2022)
Article
Engineering, Multidisciplinary
Fei Tao, Xin Liu, Haodong Du, Wenbin Yu
Summary: This paper presents a finite element coupled positive definite deep neural networks mechanics system (FE-PDNN) that enables learning of the constitutive law based on structural level response and solves the convergence robustness issue in severely damaged materials.
COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING
(2022)
Article
Materials Science, Composites
Jagan Selvaraj, Luiz F. Kawashita, Mehdi Yasaee, Gordon Kalwak, Stephen R. Hallett
Summary: A novel cohesive element formulation is proposed for modelling composite delamination, offering increased stability and requiring fewer elements. This new formulation combines nodal rotations and multiple integration points to improve the accuracy of delamination propagation simulation.
COMPOSITES SCIENCE AND TECHNOLOGY
(2021)
Article
Geosciences, Multidisciplinary
Lijia Zhong, Fengyin Liu, Bo Wang, Dong Zhou
Summary: The seepage calculation of unsaturated soil is an important subject in geotechnical engineering, but current formulas only consider saturation without considering other factors. This study introduces a new seepage function of unsaturated soil that considers the influence of dry density and saturation. By calculating an engineering case and comparing the results with and without considering these variables, it is concluded that this function can better characterize unsaturated seepage and is applicable.
FRONTIERS IN EARTH SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Zhaijun Lu, Penghao Si, Hao Xiao, Jiefu Liu
Summary: In this study, the effect of aging time on the vertical static stiffness of air springs was analyzed through accelerated aging tests and finite element simulation. Experimental data of the vertical static stiffness and elastic moduli of the rubber and cord materials of the air springs were obtained, and a finite element simulation model was established. The study revealed the influence of aging on the vertical static stiffness characteristics of air springs.
APPLIED SCIENCES-BASEL
(2022)
