Shock Reduction Technique in Thin-Plate Structure Using Elastic Patches with Gradual Thickness Variations by Hyun-Su Park, Dae-Hyun Hwang, Jae-Hung Han

“…All results from ray tracing, finite element analysis, and experiments consistently demonstrated the effective reduction of passing waves in areas behind the attached patches. …”
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基于加速度频响函数的改进响应面模型修正 by 杨成浩, 彭珍瑞, 董海棠

“…In order to improve the accuracy of model updating,the acceleration frequency response function is introduced into the improved response surface model updating.Firstly,the modal participation criterion and the effective independence method are applied to determine the best incentive point and the measuring point; the sample points are selected according to the parameters to be modified; the acceleration frequency response functions of the sample points are calculated; the initial response surface model is constructed.Secondly,the predicted value is tested by using the triple variance criterion; the outliers far from the response surface are eliminated.Thirdly,the initial response surface model is optimized to obtain the optimal solution as a new sample point; the weighted response surface model is constructed by using the ratio weighting method.Then,the finite element model is replaced by the improved response surface model; the objective function is constructed with the minimum of frequency response difference; the modified parameters are solved by cuckoo algorithm.The typical truss structure model is used to verify the effectiveness.The results show that the accuracy and efficiency of the improved response surface model are improved.…”
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Failure Analysis of Outer Ring Fracture of Floating Bearing by Xiaolu Zhu

“…After field investigation，optical microscope and electron microscope observation，bearing material composition and metallographic structure analysis，and bearing outer ring finite element simulation，it can be confirmed that the direct reason for the fracture of floating bearing outer ring is that the stress of floating outer ring is about 33.3% larger than that of fixed outer ring，which results in the excessive stress of the outer ring. …”
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FATIGUE FAILURE SENSITIVITY EVALUATION METHOD OF AUTOMOBILE REAR AXLE BASED ON NCODE by ZHANG Yu, LI Chang, HAN Xing, GAO HeXin, GAO Xing

“…Firstly,the three-dimensional finite element model of automobile rear axle was established, and the maximum vertical force was selected for strength calculation,and the stress and strain state of automobile rear axle was obtained. …”
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Dynamic Model and Quantitative Analysis of Stick-Slip Vibration in Horizontal Well by Baojin Wang, Zhongyang Wang, Fushen Ren

“…The extended Hamilton principle is applied in the paper. Then, finite element method (FEM) is employed to describe the model. …”
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STUDY ON MECHANICAL BEHAVIOR OF VOID UNDER THE INTERNAL PRESSURE AND EXTERNAL LOAD IN STEEL by FAN JunKai, HOU GaoJie

“…Based on the hydrogen pressure theory and the gas state equation, a finite element model of void under external load and internal pressure is established. …”
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Seepage Analysis of the Earth Dam of a Reservoir Based on Measured Piezometer Data by LIU Fengru, BOLANHAN·Kaiken, ZHAN Damei

“…Dam seepage is one of the main factors endangering dam safety,especially for earth-rock dam.Taking the homogeneous earth dam of a reservoir as the example,this paper analyzes the measured piezometer data,and calculates and analyzes the seepage field of the typical dam section under typical stable and transient working conditions by the finite element method for obtaining the pore pressure distribution law,and comparing it with the measured value.The results show that:The distance between piezometer and upstream dam toe is negatively correlated with piezometer water level,and the change trend of piezometer water level is basically consistent with that of reservoir water level;The isopotential line is deflected at the material partition,and dense at the cutoff wall,and the phreatic line and release point below the cutoff wall lower;The measured and theoretical values of phreatic line coincide well,which increase or decrease with the reservoir water level with good correlation;The seepage gradient at the release point under each working condition is less than the allowable gradient,and the seepage stability of the dam meets the requirements.…”
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Numerical Simulation and Experimental Study of Shot Peening on Rough Surface based on FEM-DEM by Mingming Deng, Guixi Peng, Ming Zheng, Changjiang Zhou

“…A finite element and discrete element （FEM-DEM） coupling model for shot peening on rough surface is proposed in consideration of the surface roughness of non-peened specimen. …”
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Thermoelasticity Coupling Transient Response of Composite-Material Direction Pipe by Jian-lin Zhong, Jie Ren, Da-wei Ma

“…The thermoelasticity coupling finite element model of the composite-material direction pipe is established, and the stress response under dynamic pressure, unsteady temperature, and coupling state is obtained. …”
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Damage tolerance analysis of aircraft reinforced panels by A. Pirondi, F. Carta

“…Therefore, using a fracture mechanics approach, several models (different by the geometry and the types of reinforcement constraints) were simulated with the finite element solver ABAQUS. The bonding between skin and stiffener was taken either rigid or flexible due to the presence of adhesive. …”
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Two-Dimensional CFD Modeling of Hysteresis Behavior of MR Dampers by Pengfei Guo, Jing Xie

“…The model is solved by using the finite element method, and the movement of the piston is described by the moving mesh technique. …”
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Thermal-mechanical Characteristic Analysis of Hydro-viscous Clutch for Friction Plate with Radial Groove by Cui Jiasen, Wang Yun, Chen Liyu, Chen Zhe, Yang Xiaming, Xie Fangwei

“…The heat convection of friction plate with oil film comprehensive is taken into account,the mixed friction process thermal structural coupling physical model of friction plate is established for simulation,the temperature field and stress field of friction plate with radial grooves during mixed friction process are simulated by using finite element method. The groove width and depth on the temperature field and stress filed of the friction plate are comparatively analyzed under the same conditions. …”
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Topographic Effects on the Seismic Response of Trapezoidal Canyons Subjected to Obliquely Incident SV Waves by Hui Shen, Yaqun Liu, Haibo Li, Bo Liu

“…Formulas for the equivalent nodal forces applied to the truncated boundary are derived and implemented in the finite element method. The validity of the proposed method is verified by a test case. …”
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ANALYSIS OF SURFACE TEMPERATURE IN SLIDING CONTACT WITH TWO FRACTAL SURFACES by LAI LianFeng, GAO ChengHui, HUANG JianMeng

“…The surface temperature in sliding processes was analysed using the finite element analysis taking into account Ti-6Al-4V elastic-plastic properties with material failure. …”
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THERMODYNAMIC ANALYSIS OF ROTARY CONTROL HEAD LUBRICATION AND COOLING SYSTEM by HU Gang, WANG GuoRong, YUAN GuangJie, XIA Yan, LI QuanChang, CHEN BaoKang

“…In order to ensure the structure satisfies the lubrication and cooling requirements of the rotary control head sealing system and bearing group,this paper applied the finite element analysis software and indoor experiment to carry out the thermodynamic analysis on the rotary control head lubrication and cooling system. …”
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LOCAL RESONANCE ANALYSIS OF CANTILEVER GEAR BOX UNDER GEAR TRANSMISSION EXCITATION by WANG Jue, ZHOU Hang, CHEN DongSheng, ZHANG Rui

“…Local resonance is a key reason for fatigue damage of gear housings.Local modals could be excited by vibration caused by gear meshing.Considering the shearer rocker arm for example,the local resonance characteristics of gear housing are analyzed in this paper.Finite element method is used to obtain the natural characteristics of housing and field testing with 0 load is employed to get the vibration acceleration values at the ratings.Local resonance characteristics are obtained by comparing frequency spectrum and natural frequencies.Housing wall thicknesses are selected as design variables to get the influence to natural frequencies.The results show that new frequencies which consist of meshing frequencies of different transmission stages occur and some of them can cause local resonance.Housing wall thicknesses should be changed to avoid local resonance.Excessive strain stress could be caused by local resonance and incur fatigue damage.This research could be a reference for resonance analysis and optimum design.…”
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CH of masonry materials via meshless meso-modeling by Giuseppe Giambanco, Emma La Malfa Ribolla, Antonino Spada

“…The governing equations at the macroscopic level are formulated in the framework of finite element method while the Meshless Method (MM) is adopted to solve the BVP at the mesoscopic level. …”
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Vibration Prediction and Test of Axle Gearboxes of Electric Rail Grinding Cars by Yang Junjie, Peng Dong, He Zeyin, Ma Yuqiang, Zhu Chaojiang

“…Taking the gearbox of an electric orbital grinding work vehicle as the research object, the theoretical analysis of the gear transmission system was carried out, the analytical method was used to calculate the stiffness and meshing impact excitation of the gear system, and the error excitation was simulated with simple harmonic function and synthesized with the internal excitation of the gear. A finite element analysis model including the gear pair, shaft, bearing and box was established, the spring unit was used to simulate the bearing support and gear tooth meshing, and the complete method was applied to solve the vibration response of the gearbox. …”
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The Analysis and Modeling of the Synthetical Meshing Stiffness of Inner Gearing considering the Flexible Inner Ring Gear by Shengyang Hu, Zongde Fang

“…The effect of the flexibility of the inner ring gear on the transmission system is ignored in the calculation of making the inner ring gear as a rigid body in the lumped parameter model, while the calculation amount of the finite element model is too large. Therefore, it is very important to establish an accurate and reasonable model to solve the flexibility of the inner ring gear. …”
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Numerical analysis of sodium diffusion in aluminum electrolysis cathode carbon blocks based on a microstructure multi-factor corrected model. by Chenglong Gong, Tianqi Xu, Huarong Qi, Yan Li

“…A random aggregate model was implemented in Python and imported into finite element software to simulate sodium diffusion using Fick's second law. …”
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