Modification of Differential Gear based on Multi-objective Optimization by Qiqi Feng, Tao Wang, Liangmo Wang, Hanguan Xia, Yi Dong, Yaozu Wang

“…After modification， the peak difference of transmission error is reduced by 11.39%， the maximum contact stress of tooth surface is reduced by 3.89% and the bending stress of tooth root of planetary gear and half-shaft gear is reduced by 4.40% and 5.62% respectively. Finally， finite element simulation analysis is used to verify that the fatigue life of the modified differential gear meets the requirement， and the bench experiment is carried out to verify.…”
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The Effects of Different Materials and Geosynthetics on Embankment Safety and Behavior by Elif Çiçek

“…In this study, road embankment models constructed with new materials obtained from the recycling of natural and waste materials were analysed using the finite element method. The effects of different materials such as sandy silt, rock aggregate, concrete, glass on the road fill were investigated and the results of the analysis of the models using waste fibers in the road fill were compared with the natural conditions. …”
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Design Method for Twisting and Reducing Tooth Surfaces of Herringbone Gears for Form Grinding by Zhang Xin, Liu Xinrong, Wang Huipeng

“…The contact line optimization of the gears before and after the shaping is combined with the Monte Carlo method; and the transmission error of the tooth surface anti-twisting and the tooth surface twisting; and also the tooth surface contact stress are analyzed by the finite element method. Finally, the dynamic characteristics of the tooth surface twist and the tooth surface anti-twist after the shape are compared. …”
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Effect of contact geometry on the contact stresses in a flat with rounded edge contact by Pankaj Dhaka, Raghu V. Prakash

“…In the present work, a 2-D elastic and elasto-plastic finite element analysis has been carried out for a rounded contact geometry to study the influence of the radius of the corners R鑒 and length of the flat region �2a�. …”
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STUDY ON VIBRATION FATIGUE OF SUBWAY VEHICLE BODY BASED ON RIGID-FLEXIBLE COUPLING DYNAMICS by KE Biao, WU XingWen, CHI MaoRu, LIANG ShuLin

“…The reliability of the structure is directly related to the service safety of the vehicle.Based on the existing vehicle body standard EN12663, this paper firstly studies the static strength and fatigue strength of the vehicle body, and identifies the static weak position of the vehicle body under standard load.In order to further identify the weak position of the vehicle body under service conditions, a rigid-flexible coupling dynamic model of subway vehicle is established based on the rigid-flexible coupling dynamic theory and finite element method.Using the modal stress recovery method, the dynamic weak positions in various service modes are identified, and the vehicle modes which contribute a lot to each weak position are analyzed.Finally, based on the subway rigid-flexible coupling dynamic model, the dynamic stress characteristic of vehicle body weak position under various service conditions is analyzed, and the service life of key welds of vehicle body structure is predicted based on monte Carlo sampling and Miner linear cumulative damage theory.…”
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Multiple Reflective Cracks in Semirigid Base Asphalt Pavement under Traffic Load Using XFEM by Lei Guo, Jinchao Yue, Pan Guo, Xiaofeng Wang

“…This paper built a three-dimensional layered structure model of semirigid base asphalt pavement with single and double transverse reflective cracks based on the Extended Finite Element Method and fatigue fracture theory. The effects of the number of cracks, crack spacing, and crack length on the stress intensity factors (KI, KII, and Keff) under moving vehicle loads were studied. …”
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Payload Distribution and Gear Strength Analysis of Gear Meshing Process Under the Typical Contact Condition by Fu Shuangxue, Zhou Changjiang, Han Xu

“…Based on precise finite element model of gear,under two kinds of typical load contact condition of the static / quasi static load and dynamic contact load,the gear strength is simulated,and the conclusions are draw by comparison. 1The load is linear distribution along the contact line before running in and parabolic distribution after running- in,the influence of and the gear surface hardness,running- in effect and gear end stiffness effect on the load distribution are considered in numerical simulation of gear strength,and the simulation value is bigger than others. …”
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Vibration Failure Analysis and Countermeasures of the Inlet Pipelines at a Gas Compressor Station by Shuangshuang Li, Liwen Zhang, Chunyan Kong

“…A better modification model was applied by performing modal analysis and fluid-structure interaction (FSI) vibration analysis using the finite element method. The effect of countermeasures was evaluated by vibration and pulsation measurements during operation after modifications, which results showed the level of piping vibration and pressure pulsation was within the allowable limits. …”
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STATIC AND DYNAMIC CHARACTERISTICS ANALYSIS AND OPTIMIZATION OF ELECTRIC WHEEL DUMP TRUCK FRAME by MI ChengJi, LI WenTai, NI ZhengShun, XIAO XueWen, YANG QinQuan, XIAO YuePeng, WANG MengLong

“…In order to analysis static and dynamic characteristics of a certain type electric wheel dump truck frame,the load information of key bearing connection sites of the fame was obtained by the rigid and flexible coupling multi-body dynamics analysis for the whole vehicle and the finite element model of the frame with welding details was constructed simultaneously.Then,the static analysis of the frame on the condition of static state with full load was carried out and its correctness was verified by using stress test on the mine road surface. …”
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MULTIAXIAL MANNED CENTRIFUGE INTENSITY VERIFICATION CALCULATION METHOD BASED ON MULTIBODY DYNAMICS by YUE CongZhen, NIU HongPan, WANG PengFei, FAN ZhiGeng, YIN JiaoMei

“…In this paper, a multi-axis centrifuge intensity check method based on multi-body dynamics combined with random sampling and finite element calculation is proposed. The calculation results can be obtained in a relatively short period of time, it is highly efficient and feasible, which is conducive to improve the accuracy of structural intensity verification of multi-axis nested rotating equipment, and provides important support for its structural design.…”
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Experimental Study and Low Temperature Friction Characteristic of Angular Contact Ball Bearing by Qiu Shengdong

“…In order to analyze the low temperature friction characteristics of angular contact ball bearings.Firstly,the change of low temperature structure of bearing is analyzed by finite element software,the changes of the low temperature structure,the change of the clearance and the change of the contact angle of the bearing are simulated and analyzed. …”
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Paths of interactive cracks in creep conditions by K. Nowak

“…The Continuum Damage Mechanics constitutive equations are used to describe the creep crack growth problem and Finite Element Method Abaqus system is applied to solve corresponding boundary and initial value problem. …”
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Effect Analysis on Combustion and Emission Characteristics of a Rotary Burner Fueled by Biomass Pellet Fuel by Guohai Jia, Lijun Li, D. M. Zhang

“…A biomass pellet rotary burner was chosen as the research object, in order to study the influence of excess air coefficient on the combustion phenomenon of biomass rotary burner, the finite element simulation model of a biomass rotary burner was established, and simulation results of a biomass rotary burner were verified by the experiment. …”
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Research on Slope Angle of Base for Asphalt-Concrete Core Dam by FAN Dongyang, WANG Junjie, LI Yuqiao

“…This study takes Miaotang Reservoir in Wushan of Chongqing as an example and uses the nonlinear finite element method (FEM) to analyze the stress and deformation characteristics of concrete bases during the completion and impoundment periods and tensile stress graphs for different base shapes.The effort is to study the influence of the slope angle of the base for the asphalt-concrete core dam on its stress and deformation.The results show that during the completion period,the horizontal displacement,settlement,and principal stress of the base slowly increase as the upstream or downstream slope angle grows.During the impoundment period,the horizontal displacement and settlement of the base gradually decrease with the reduction in the upstream or downstream slope angle.In addition,a greater upstream slope angle can lower the principal stress while a greater downstream slope angle has the opposite effect.In the two working conditions,when the slope angle on both sides of the base increases at the same time,the value of compressive stress will rise,and the value of tensile stress will drop.The change in the slope angle on one side of the base has a stronger influence on the tensile stress graph than that on both sides.It is recommended to use a base with a larger slope angle on the upstream side and a smaller slope angle on the downstream side to improve the stress and deformation within the range of 58° to 90°.…”
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Experimental and Numerical Failure Analysis of Adhesive Composite Joints by Farhad Asgari Mehrabadi

“…To achieve the aims, Double Cantilever Beam (DCB) was used to evaluate the fracture state under the mode-I loading (opening mode) and also hybrid lap-joint was employed to investigate the failure load and strength of bonded joints. The finite-element study was carried out to understand the stress intensity factors in DCB test to account fracture toughness using J-integral method as a useful tool for predicting crack failures. …”
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Parametric FEA analysis of lattice and block plate bone implants: Evaluating the effects of thickness and radius on mechanical performance by Devika Banothu, Pankaj Kumar, Rajasri Reddy

“…This study investigates the mechanical performance of bone implants designed as lattice and block plates using parametric Finite Element Analysis (FEA). The objective was to evaluate the effects of varying thickness and radius on the total deformation and equivalent stress under different loading conditions. …”
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Study of Stress and Deformation of High Concrete-Face Rockfill Dam on Steep Slope in Narrow Valley by HOU Bingling, NIE Baisong

“…At present,in the finite-element stress and strain calculation of rockfill dams,fixed support is mostly adopted to simulate the connection between the rockfill at the bank slope and the slope.As for a concrete-face rockfill dam (CFRD) in the steep slope area of a narrow valley,the rockfill may slip along the bank slope face,in which case fixed support simulation is inconsistent with the actual situation.To study the influence of the steep slope in a narrow valley on the stress and deformation of a CFRD,we adopt the thickness-free Goodman element to simulate the interface between the steep slope boundary and the rockfill in a narrow valley.The results are compared with those of the conventional method of simulating the rockfill nodes at the bank slope as fixed support.The calculation results show that the deformation and stress distribution of the rockfill body are similar in the two cases,although the deformation is relatively smaller when fixed support treatment is implemented.Moreover,the tensile stress at the bottom of the concrete face in the riverbed section is large in the case of fixed support,which disagrees with the practical situation.After frictional contact is considered,the rockfill can slide along the bank slope,the stress distribution in this area tends to be uniform,and the arch effect is minor.After impoundment,the concrete face at the bank slope is slightly compressed under the action of the hydrostatic pressure,which is in line with the actual situation.…”
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LIGHTWEIGHT OF THE VEHICLE B PILLAR BASED ON SIX SIGMA ROBUST DESIGN UNDER SIDE IMPACT by QIU RuiBin, CHEN Yuan, LEI Fei, YANG ShaoYong, LI YongJun

“…In this paper,by considering uncertainty factors,taking side impact of a car as an example,first of all,an accurate finite element model is established and verified according to relevant crash regulations,then,after building an approximate model and a deterministic optimization model,the optimal solution is obtained by sequential quadratic programming algorithm and the reliability analysis is used,finally the original vehicle B pillar is accomplished lightweight research and improvement by using six sigma robust design method. …”
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Propagation of Transverse Wave for the Piezoelectric Radial Phononic Crystal Annular Plate in a Fibonacci Order by Wei Liu, Guangbin Yu

“…Compared with conventional PC structures, transmission response of transverse vibration for the Fibonacci RPCAP model is calculated theoretically to analyze the stop band phenomenon. Finite element simulation method (FEM) is conducted here to verify the theoretical results. …”
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Flexural and Shear Behavior of FRP Strengthened AASHTO Type Concrete Bridge Girders by Nur Yazdani, Farzia Haque, Istiaque Hasan

“…The behavior of FRP strengthened concrete bridge girders, including failure modes, failure loads, and deflections, can be determined using an analytical finite element modeling approach, as outlined in this paper. …”
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