Fatigue failure of welded connections at orthotropic bridges by Z.H. Qian, D. Abruzzese

“…In this paper practical fatigue failure cases at the welded connections, ease to occur fatigue cracking, are presented, and analyzed through a numerical modeling of orthotropic deck via FE (finite element) software. Furthermore, the improvement technologies of fatigue are also discussed. …”
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GEOMETRIC PARAMETERS DETERMINATION AND SIMULATION OF SMALL-SIZED RV REDUCER by WANG Jun, ZHANG HuiMin

“…Then, the force analysis and strength check of the involute planetary gear and cycloid pin gear mechanism were carried out by the theory of force analysis and strength check for conventional RV transmission system, and the simulation is carried out by the finite element analysis software. Finally, by comparing the theoretical calculation results with the simulation results, the maximum contact stress errors of the involute planetary gear and the cycloidal pin gear tooth surface are up to 5.77% and 11.03%, respectively, which verifies the correctness of the theoretical analysis and the rationality of the structural design, and provides theoretical support for the subsequent research on small-sized RV reducers.…”
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STUDY ON COMPILING LOAD SPECTRUM OF ACCELERATION LIFE TEST FOR HIGH SPEED PANTOGRAPH FRAME by QIAO Wei, MEI GuiMing, WANG JiangWen, HUANG Zhong, QIU JiangYang

“…Firstly, the coupling dynamic model of the pantograph was established based on the finite element method, and the load spectrum of the upper frame was obtained by multi-body dynamics simulation. …”
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Study on Structure Review of Emptying Bottom Outletfor Raising Water Retaining Level of Goupitan Arch Dam by WEI Wei, XIA Chuanxing, ZHU Xi, XIONG Kun

“…Based on the material mechanics method andthe three-dimensional finite element method, this paper reviews and studies the working gate, gatesupport structure, and bottom outlet structure respectively. …”
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Analysis of Scraper Conveyor Chain Drive System based on Matlab and VB by Mao Jun, Dong Xianrui, Lu Jinnan, Liu Xifu, Yan Jianglong

“…In order to improve the efficiency and reliability of the scraper conveyor chain drive system parametric design,the finite element mathematical model is built and the parametric analysis and calculation is carried out by using the software interface of optimizing design for scraper conveyor developed on the basis of VB by calling database information and using com pieces interface technology of Matlab. …”
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RESEARCH ON AXIAL LOAD CARRYING CAPACITY OF A NEW TYPE OF SUPERCELL HONEYCOMB STRUCTURE by HE Bin, LI Xiang

“…A new type of supercell honeycomb structure was put forward in which rhombus and circle were combined into the basic cell,and research was focused on its structural stability,overall strength and stiffness. By helps of finite element numerical simulation,the method of eigenvalue buckling analysis was used to realize the process of structural stability analysis of the supercell honeycomb,and the analysis result was also compared with those of rhombus,regular hexagon and regular octagon honeycomb structure.Meanwhile,a type of chassis deck of electrical motorcycle was taken as an example to testify the overall strength and stiffness of the new type of honeycomb sandwich structure’s core under axial load and analyze the influence on strength and stiffness of the core with different wall thickness of its cell. …”
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Seismic Response Analysis of Masonry Minaret and Possible Strengthening by Fiber Reinforced Cementitious Matrix (FRCM) Materials by Ahmet Murat Turk

“…A three-dimensional finite element model of the whole minaret, adjusted with former in situ ambient vibration test results, was used in order to get probable lateral displacements, stresses, and understanding of failure modes under seismic loading. …”
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Study on Application of Reinforcement Measures for Spillway Foundation on Thick Collapse Accumulation Body by WANG Jun, NING Yu, HUANG Qingfu

“…The foundation of spillway in the accumulation body is characterized by low bearing capacity,poor stability and large and uneven settlement due to the properties of an accumulation body.In particular,the bottom plate cracking and staggering along the transverse joints caused by uneven settlement of the foundation in the chute section will cause serious damage to the entire chute section under the action of high-speed water flow.Combined with the engineering example,this paper conducts the numerical analysis the vertical settlement displacement distribution and chute structure joint opening of the spillway on the accumulation body by a large finite element software.The research on the improvement effect for spillway foundation strengthened by “replacement method” shows that the method can significantly reduce the vertical settlement of spillway structure.Changing the vertical joints of each section of chute to lap joints can greatly reduce the opening of structural joints.In conclusion,the method proposed in the study is very effective in improving the bearing capacity of spillway foundation and reducing uneven settlement,and is feasible and reasonable in construction and economy, respectively.…”
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Comparison of Machine Learning Algorithms for the Prediction of Mechanical Stress in Three-Phase Power Transformer Winding Conductors by Fausto Valencia, Hugo Arcos, Franklin Quilumba

“…The accuracy compared with finite element results was evaluated for each model. The input data were the transient electrical fault currents of power system equivalents with impedances from low to high values. …”
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Strong Coupling Analysis of Magnetic Fluid Thermal Field of Corrugated Magnetorheological Brake by Dongya Tao, Zhigang Fang

“…In order to study the temperature characteristics of a corrugated Magnetorheological Brake(MRB) applied to the vehicle under the strong coupling of magnetic fluid thermal field， the finite element analysis models of magnetic fluid coupling and thermal fluid coupling are established. …”
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Study on Meshing Stiffness and Dynamic Characteristics of Fine High Tooth Gears by Zhang Xiangfeng, Shang Jun, Zhou Jianxing, Fei Xiang

“…In order to study the vibration characteristics of fine high tooth gears, a pair of standard gears and fine high gears are taken as comparative experimental objects, and the translation torsion dynamic model of a spur gear transmission system is established. The finite element method is used to solve the time-varying meshing stiffness of fine high tooth gears, and the influence of load on the stiffness is analyzed. …”
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Study on the Transmission Characteristic of Disk Type Magnetorheological Fluid with Variable Thickness by Huang Jin, Zhou Yi, Yuan Fapeng

“…Based on the theory of magnetic circuit,the magnetic circuit model of the transmission device is established,the formula of magnetic potential is deduced. Based on the finite element simulation of two-dimensional magnetic field by using ANSYS software,and the distribution cloud of magnetic induction intensity under 4 different thicknesses is obtained,then the ability of torque transmission under different thickness is analyzed. …”
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Deformation and Stability Analysis of a Core Rockfill Dam with Leakage by Yuanzhong Chen, Guobing Lin, Yangyang Lu

“…And a three-dimensional finite element stress-seepage coupled calculation model of the dam was established to study the deformation and stresses of the dam under the condition of normal storage water level and the sharp drop in the storage level. …”
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Analysis of the Effect of the Friction Coefficient on a Pavement Structure by Lu Bai, Yong-sheng Zhang

“…In this study, the influence of the friction coefficient on the internal effect of the pavement structure is studied deeply by establishing the asymmetric finite element numerical model. The model analyzes the inner stress, strain, and displacement variations of the pavement, with friction coefficients under the conditions of 0.3, 0.5, 0.8, and 1.0 and the action of the nonlinear superposition between the single-point static vertical load and horizontal load. …”
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Design and Experimental Validation of Clutch Protection Structure of Miniature Reducer by Yu Wang, Huihua Liu, Yukun Li, Changjiang Zhou, Bo Hu

“…Aiming at this problem， a clutch structure is proposed to protect miniature reducer in this study. Using the finite element method， basic parameters of the spring and the protection threshold of the clutch structure is designed. …”
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THEORETICAL MODELING AND TEST SIMULATION RESEARCH OF DOUBLE-LAYER VIBRATION ISOLATION SYSTEM by CHEN GaoSheng, LAI LiangQing, JIANG HongGang, SU ZhengTao

“…The theoretical model of double-layer vibration isolation system based on the icebox compressor was built through the four-point parameter method,and got the force transportation-rate pattern,found the finite element simulation model of double-layer vibration isolation,obtained the main mode of the system through mode analysis and the force transportation-rate through dynamic reaction analysis. …”
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STUDY ON THE MECHANICAL PROPERTIES OF TRUSS LATTICE STRUCTURES BY MJF 3D PRINTING (MT) by WANG XuanYu, LI Nan, WURIKAIXI AiYiTi, JIA Ru

“…The mechanical properties, deformation modes and energy absorption capacity of different lattice structures were analyzed by uniaxial compression experiments and finite element simulations. It show that all seven structures go through the linear elastic stage, platform stress stage and densification stage during the compression process, and the deformation process of SBO structure with bending as the dominant type is relatively smooth, and its platform stress(σ_pl=2.76 MPa) and platform strain interval length（23% to 72%） are higher than other lattice structures, and the accumulated energy absorption value reach 702 J/mm~3, showing excellent mechanical properties and energy absorption capacity.…”
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WEAR SIMULATION FOR ARTIFICIAL HIP JOINT BASED ON EXPERIMENTAL MODEL by 鲍雨梅, 许景顺, 吴蕾, 高海明, 徐哲玉, 马龙

“…Computational wear modeling based on the finite element method and the wear rate model was developed for artificial hip joint and the effect of joint clearance was investigated. …”
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Design and Modal Analysis of a New Type Cycloidal Reducer with Movable Output-pins by Li Yang, Xu Lixin, Hou Changxing, Chang Le

“…Then, the modal characteristics of the reducer are analyzed based on the finite element technology and the inherent frequencies and vibration characteristics of each order of the reducer are obtained. …”
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热采井口装置螺栓的蠕变及应力松弛规律研究 by 王亭沂, 曹旭祥, 李风, 孙爽

“…The stress relaxation phenomenon of bolt used in thermal recovery wellhead is studied experimentally under field conditions.The normal and high temperature tensile test,creep test and stress relaxation test are carried out respectively.The comparison of the experimental results shows that the strength of bolt material decreases and the plasticity increases at high temperature.The creep deformation is obvious under initial stress which explain the reason of stress relaxation in principle.The stress relaxation test,it can be found that the bolt stress have decreased obviously under the field condition.According to the stress relaxation experimental data,the stress relaxation formula under the field condition can be fitted.Finite element software is used to calculate the minimum pre-tightening load of bolts for each flange of KR21-370 thermal recovery wellhead device to achieve sealing.Combined with stress relaxation formula,the time required for flanges to fail due to stress relaxation of bolts is calculated.Solutions are proposed for bolts prone to failure.…”
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