Design and Performance Analysis of a TLET-Type Flexure Hinge by Ngoc Le Chau, Ngoc Thoai Tran, Thanh-Phong Dao

“…Failure analysis of the TLET joint with different materials is conducted by finite element analysis. The closed-form models are validated by simulations and experimentations. …”
Get full text

Temporal-Spatial Characteristics of Ground and Pile Responses to Twin Shield Tunneling in Clays by Minghong Sheng, Jinjin Gao, Panpan Guo, Rihong Cao, Yixian Wang

“…To that end, a case study and three-dimensional (3D) finite element (FE) analysis were performed. Based on the in situ monitoring data from the presented twin tunneling case history with existing piles beneath, the adopted 3D FE method was validated to be competent to yield reasonable simulation results. …”
Get full text

The Study on the Shock Wave Propagation Rule of a Gas Explosion in a Gas Compartment by Shu-Chao Lin, Qing-Zhao Hou, Anna Derlatka, Shan Gao, Jin-Jun Kang, Xiao-Lei Dong

“…Combined with the k-ε turbulence model of general application, a refined finite element model of a utility tunnel’s gas compartment filled with the methane/air mixture is developed. …”
Get full text

Novel, low-cost bioreactor for in vitro electrical stimulation of cardiac cells by Joseph P. Licata, Jonathan A. Gerstenhaber, Peter I. Lelkes

“…However, there are discrepancies in the literature as to best practices for promoting cardiac differentiation using ES.MethodsThis study presents a novel, 3D printed bioreactor that delivers in vitro ES to human induced pluripotent stem cell-derived cardiomyocytes (hiPSC-CMs), promoting cell maturity and functional readiness for implantation. Finite element analysis and mathematical modeling were used to model the fluid dynamics and to characterize in detail the delivery of pulsatile electrical signals, providing precise control over stimulation parameters such as voltage, current, and charge.ResultsThe bioreactor developed here provides an easy-to-use, inexpensive platform for culturing hiPSC-CMs under the influence of ES and low-shear fluid flow for enhanced nutrient availability, while its “drop-in” design facilitates real-time observation of cultured cells. …”
Get full text

Numerical Investigation on Head and Brain Injuries Caused by Windshield Impact on Riders Using Electric Self-Balancing Scooters by Shi Shang, Yanting Zheng, Ming Shen, Xianfeng Yang, Jun Xu

“…Numerical vehicle ESS crash scenarios are constructed by combining the finite element (FE) vehicle model and multibody scooter/rider models. …”
Get full text

Enhancement of punching shear behavior of reinforced concrete flat slabs using GFRP grating by Ahmed Mahmoud, Haitham Mostafa, Tarek Mostafa, Ahmed Khater

“…Test results revealed an improvement in the ultimate load ranging between 9.03% and 27.67% for the specimens strengthened by the proposed GFRP grating system. A Nonlinear Finite Element Analysis (NLFEA) was carried out using the ANSYS program with correlational evaluation using load-deflection response and cracking pattern, which resulted in a good convergence of numerical simulations and experimental performance results ranging from 1.0% to 8.0%. …”
Get full text

The Influence of the Motor Traction Vibration on Fatigue Life of the Bogie Frame of the Metro Vehicle by Qiushi Wang, Jinsong Zhou, Dao Gong, Tengfei Wang, Jiangxue Chen, Taiwen You, Zhanfei Zhang

“…To illustrate the influence of the motor vibration on the fatigue life of the bogie frame, a metro vehicle was taken as an example: first, the precise finite element model of the frame was established, and its correctness was verified; then, the vibration characteristics of the frame were analyzed by sweep frequency calculation; and finally, considering the vibration acceleration signal of the motor measured on a metro line as the excitation, the influence of the random vibration on the fatigue life of the frame under traction and idle running conditions was compared and analyzed by solving the power spectral density of the dynamic stress response at the weak fatigue nodes of the structure. …”
Get full text

Assessment of the Feasibility of Using a Synchronous Homopolar Motor Instead of an Induction Motor in a Traction Drive With a Wide Constant Power Speed Range by Vladimir Prakht, Vladimir Dmitrievskii, Vadim Kazakbaev, Eduard Valeev, Aleksey Paramonov, Alecksey Anuchin

“…The study employs the downhill simplex method for optimization and the finite element method. The study shows that the benefits of SHM include reduced active material costs and improved motor and inverter reliability.…”
Get full text

The Earth-Mars Transfer Trajectory Optimization of Solar Sail Based on hp-Adaptive Pseudospectral Method by Yufei Guo, Dongzhu Feng, Xin Wang, Cong Li, Yunzhao Liu

“…The hp-adaptive pseudospectral method combines the global pseudospectral method with the finite element method, which adopts double layer optimization strategy to solve the optimal control problem and has higher computational efficiency and accuracy than the traditional global pseudospectral method. …”
Get full text

Study on Impact of Turbine Location on Hydrodynamics in Tidal Farm by Hongqiang Zhang, Daming Li, Yanqing Li, Ting Yang, Shan Luo, Shunfa Tian, Shilong Bu

“…Also a 2-D tidal model of far-field flow was established, and Finite Element Method was adopted to solve the 2-D shallow water circulation equations; thus, the impact of tidal turbine could be simulated by utilizing different location’s compositive roughness. …”
Get full text

Classification of RTV-coated porcelain insulator condition under different profiles and levels of pollution by Ali Ahmed Salem, Samir Ahmed Al-Gailani, Abdulrahman Ahmed Ghaleb Amer, Mohammad Alsharef, Mohit Bajaj, Ievgen Zaitsev, Razali Ngah, Sherif S. M. Ghoneim

“…The criteria, which are the flashover voltage (x1), fifth to third harmonics of leakage current (x2), maximum electric field (x3), total harmonic index (x4), insulation resistance (x5) and dielectric loss (x6), were proposed for evaluating the insulator’s string condition. The finite element method (FEM) was used to simulate an electric field. …”
Get full text

Improving P-Doped DBRs Operation at Cryogenic Temperatures: Investigating Different Mirror Geometry by Behzad Namvar, Topi Uusitalo, Heikki Virtanen, Mircea Guina, Jukka Viheriala

“…To determine the actual temperature of an operating p-doped DBR and its impact on the behavior of the DBRs and the cryo-VCSEL, a thermal simulation using the finite-element method was conducted and validated with experimental results. …”
Get full text

Numerical Simulation of Thermo-Hydro-Mechanical Coupling of Model Test for Nuclear Waste Disposal by Yu-Ping Wang, Zhe Wang, Fa-Cheng Yi, Lei Fu, Ying Luo

“…Using the buffer material Mock-up test of multi-field coupling as a model, the partial differential equation (PDE) module in the general finite element software COMSOL Multiphysics was developed by a second development stage. …”
Get full text

Investigation on the fracture toughness of a low-density δ-quenching and partitioning steel sheet by Z.L. Li, D.D. Cui, Y.S. Zhang, D. Chen, L. Gao, X.Q. Wang, X.W. Li

“…On the whole, the QP1180 sample exhibits the highest fracture toughness across different ligament lengths, primarily due to its uniform microstructure and more remarkable transformation-induced plasticity effect. Finite element simulation further verifies the strain distribution characteristics during deformation. …”
Get full text

Modelling and measurements of thermally induced residual stress in IN718 nickel-based superalloy during non-uniform quenching by S. Rahimi, M. King, M. Amir Siddiq, B.P. Wynne

“…The HTCs have then been implemented in an elastic–plastic finite-element model, which included temperature dependant thermo-mechanical properties to predict thermally induced residual stress fields during heterogeneous water/air quenching from. …”
Get full text

Fracture Mechanical Behavior of Cracked Cantilever Roof with Large Cutting Height Mining by Zenghui Zhao, Wei Sun, Mingzhong Zhang, Xiaojie Gao, Shaojie Chen

“…Finally, the accuracy of the theoretical model was verified by numerical experiments using the extended finite element method. The results demonstrate that the size of the area affected by the vertical crack increases with the increase of the crack size and the thickness of the roof. …”
Get full text

Experimental and Numerical Study of Mechanical Properties of Concrete Containing Biochar by S.O Odeyemi, M.O Adisa, M.A Olawale, A.O Abdulsalam, J.A Oloba, H.A Ibrahim, B.O Sanusi, J.O Eda, F.O Obisiji

“…The experiment aimed to determine the mechanical characteristics of biochar-containing concrete using a concrete grade M20, cube moulds of dimension 100mm x 100mm x 100mm; cylinder moulds of 100mm x 200mm and beam formwork of dimension 150mm x 150mm x 1000mm were used to cast the control concrete sample and concrete containing varying percentages of biochar. Finite element analysis was also carried out using the ABAQUS program, utilizing concrete properties discovered through experimental study. …”
Get full text

Optimization Analysis Method of New Orthotropic Steel Deck Based on Backpropagation Neural Network-Simulated Annealing Algorithm by Xiuli Xu, Kewei Shi, Xuehong Li, Zhijun Li, Rengui Wang, Yuwen Chen

“…To study the effects of the fatigue performance due to the major design parameter of the orthotropic steel deck and to obtain a better design parameter, a construction parameter optimization method based on a backpropagation neural network (BPNN) and simulated annealing (SA) algorithm was proposed. First, the finite element (FE) model was established, and the numerical results were validated against available full-scale fatigue experimental data. …”
Get full text

Nonlinear conductive behavior of MoS2/PDMS composites for self-adaptive electrostatic protection by Hongfei Li, Zhaoming Qu, Yazhou Chen, Wei Cao, Kaihui Li

“…Mechanism analysis confirms the contribution of processes such as Ohmic behavior, Schottky emission, and F-N tunneling to the nonlinear conductivity of composites. Finite element simulations show that the increase in filler forms more conductive channels, which reduces the Eb. …”
Get full text

Studying Maximum Plantar Stress per Insole Design Using Foot CT-Scan Images of Hyperelastic Soft Tissues by Ali Sarikhani, Abbas Motalebizadeh, Sasan Asiaei, Babak Kamali Doost Azad

“…In this paper, by Finite Element Method, maximum stress value and stress distribution of plantar were studied for different insoles designs, which are the flat surface and the custom-molded (conformal) surface. …”
Get full text