RESEARCH ON DYNAMICS CHARACTERISTICS OF SPUR GEAR BASED ON DYNAMIC MSEH STIFFNESS by DAI ZhanSheng, LIU GuiMian

“…In order to study the influence of rotational speed on mesh stiffness, an algorithm of calculating the dynamic mesh stiffness which related to rotational speed was proposed based on finite element framework by using the average acceleration method. …”
Get full text

Influence Analysis of Sprocket Tooth Thickness Effect on Natural Frequency of Mining Scraper Conveyor Chain Drive System by Wang Cunfei

“…In order to improve the wear problem of sprockets caused by vibration in the process of mining scraper conveyor operation, the Ansys finite element software is used to analyze the sprocket with different tooth thicknesses respectively. …”
Get full text

Numerical Analysis of Temperature Effect of Sunshine on Concrete Box Aqueduct by LIANG Fei

“…Under the action of summer sunshine,the aqueduct structure is in the state of internal cooling and external heat.It is of great significance to study the temperature difference and temperature stress of concrete box aqueduct under this condition.By establishing the finite element model of the aqueduct section and analyzing the temperature field and temperature stress field of the aqueduct under the influence of solar radiation and atmospheric temperature during the operation period,it can be concluded that:The effect of sunshine on the temperature of the outer surface of aqueduct structure is obvious,and the water temperature in the aqueduct mainly affects the temperature of the inner surface.The temperature difference between the inner and outer surfaces is large.The maximum temperature difference of the top plate is 23.4°C,and the peak temperature difference appear successively in the east web,top plate,bottom plate and west web.In addition,the temperature field also changes accordingly.The tensile stress on the inner surface of the top plate is the largest,which is 3.56 MPa,followed by the bottom plate,the east web and the west web.In the design of aqueduct,attention should be paid to the temperature stress caused by sunshine,and crack prevention measures should be taken to the crack prone parts.…”
Get full text

Parametric Study of Tuned Mass Dampers for Long Span Transmission Tower-Line System under Wind Loads by Li Tian, Yujie Zeng

“…A three-dimensional finite element model of transmission tower-line system is established by SAP2000 software to numerically verify the effectiveness of the tuned mass damper device. …”
Get full text

Modeling and Mechanism of Rain-Wind Induced Vibration of Bundled Conductors by Chao Zhou, Yibing Liu

“…The model is solved by finite element method and Newmark method, and the effects of the wind velocity and the upper rivulet’s motion on vibration amplitude of the leeward conductor are analyzed. …”
Get full text

Analysis of Relevant Influence Factor of the High-speed Meshing Gear Body Temperature by Wang Chunhua, Han Chong, An Da

“…In order to analyze the influence of the related factors on the body temperature of high-speed gear in the meshing process,taking the standard involute gear as study object,based on the finite element analysis of temperature field and using the control variable method,the influence law of related factors on gear temperature is analyzed quantificationally. …”
Get full text

Research on the penetration resistance characteristics of 2024-T42 aluminum alloy tube to spherical steel projectes by WANG Ligang, WANG Rihan, XIAO Siwei, TIAN Lu, DONG Qin

“…MethodsThe finite element model of spherical steel projectile penetrating 2024-T42 aluminum alloy target was established based on Ansys/Workbench software and Johnson-Cook material model, and its effectiveness was verified. …”
Get full text

STUDY OF THE DAMAGE DEGREE OF DENT PIPE BASED ON OYANE DUCTILE FRACTURE CRITERION by LI QingYun, WU XiuJu

“…Establishing three dimensional spherical concave defect pipeline model by finite element software and solving the model,discussing internal pressure influence of the pipeline and the indenter size on the relationship between the depth of sag and the damage degree of oil and gas pipelines.The results show that: when the depth of the pipeline depression is in a certain range the internal pressure is beneficial to resist ductile rupture. …”
Get full text

Simulation Analysis of Cross-axis Magnetic Gear Characteristic by Wei Jie, Huiqing Lan

“…In order to improve the feasibility of the cross-axis magnetic gear application， based on its structure and working principle， the finite element model of the cross-axis magnetic gear is established. …”
Get full text

Research on Anti-seepage Curtain Layout of a Deep Foundation Pit near the Levee by WANG Xuehong, LIU Xiaoqing, ZHANG Hui, WANG Xin, YAO Lu

“…A deep foundation pit project is located in the east of the levee at Yangzhou section of the Grand Canal.There are silt soil and silt sand layers in the bottom of the foundation pit within excavation depth,which is prone to seepage accidents,threatening the safety of the levee.Based on MIDAS GTS,this paper establishes a three-dimensional finite element simulation model according to the geological survey data,discusses the seepage situation of each excavation stage before and after adding curtain and with different lateral curtain width in detail,and analyzes the relationship between lateral curtain width and levee and foundation pit.The results show that:The seepage gradient of the two corners of the foundation pit near the levee is the largest without curtain,and the seepage damage is easy to occur near the two corners;The seepage gradient at the bottom of the intermediate curtain will slightly increase with the increase of the lateral curtain width;From the technical and economic point of view,the seepage prevention effect is obvious when the lateral curtain width is 17 m;The seepage gradient at the bottom of the intermediate curtain and at the end of the lateral curtain is large which should be paid close attention to.The research results provide an empirical reference for similar projects.…”
Get full text

Strain-gradient effect on the crack tip dislocations density by Valery Shlyannikov, Andrey Tumanov, Ruslan Khamidullin

“…The material constitutive equation is implemented in a commercial finite element code by a user subroutine, and the crack tip fields are evaluated with novel parameters in the form of the intrinsic material length, characterizing the scale over which gradient effects become significant. …”
Get full text

RESEARCH ON THE IMPROVEMENT OF THE INPUT SHAFT’S CONNECTION METHOD OF A AGITATOR by TAO Jun, ZHONG Ying, FEI LingZhi

“…The theoretical analysis method and finite element method were used to demonstrate the improvement scheme. …”
Get full text

Study on the Performance of Electrothermal Shape Memory Alloy and Magnetorheological Combined Drive by Yang Xiong, Jin Huang, Ruizhi Shu

“…Maxwell software is used to carry out finite element analysis of the magnetic field and obtain the distribution of the magnetic field intensity along the radius in the working gap of the disc under different currents. …”
Get full text

STUDY ON MECHANICAL BEHAVIOR ANALYSIS AND OPTIMIZATION OF STIFFENED RIBBED PLATE (MT) by ZHANG ChenFan, DENG QingTian, LI XinBo, HOU ZhaoYang

“…Using finite element simulation and experimental testing methods, with three stiffened rib configurations as the research object, the effect of the stiffened rib configuration on the mechanical behavior of the stiffened plate structure is analyzed under the given material parameters and geometric parameters of the stiffened plate. …”
Get full text

RELIABILITY ANALYSIS FOR VIBRATION STABILITY OF DISC BRAKE SYSTEM WITH THЕ HYBRID PARAMETERS by HE Ning, ZHANG DeLong, ZHANG QingHua

“…In view of the brake squeal suppression problem of automotive disc brakes during braking, the effects of brake imbalance and uncertainty in brake parameters, a stability and reliability analysis method of disc brake with the hybrid parameters was proposed by combining response surface methodology, finite element method, and reliability analysis theory. …”
Get full text

CONTACT MECHANICS BEHAVIOR OF RUBBER TUBE OF DOWN-HOLE PACKER by HAN ChuanJun, CHEN Fei, ZHANG Jie, YU Cheng

“…Based on Mooney-Rivlin model of rubber material,using the principle of penalty function and coulomb friction and Combining with rubber nonlinear large deformation problems,the frictional contact problem of Rubber tube and casing is analyzed by the finite element with measured data. The results shown that the friction coefficient of contact is the maximum and 0. 514 in the absence of lubricant,the minimum and 0. 122 under oil lubrication,and others is 0. 122 0. 514. …”
Get full text

COMPARATIVE STUDY ON FATIGUE PROPERTIES OF WHEEL MATERIALS CONTAINING INCLUSIONS AND SHRINKAGE DEFECTS (MT) by WANG ZhaoHan, XU Tian, ZENG DongFang, LU LianTao

“…To analyze the difference between the influence of the two defects on the fatigue properties of wheel materials, the finite element models were established based on the tessellated stress theory. …”
Get full text

OPTIMIZATION ANALYSIS ON GEAR AND RACK FOR JACKING-SYSTEM OF JACK-UP PLATFORM by LV Tao, XU ChangHang, CHEN GuoMing, LI LinLin

“…According to the main reason for the failure of the rack and gear,different fillet radius features on both ends of the rack and gear and rack modification were builded,and the effects of the different fillet radius and modification coefficient to the carring capacity of the rack were analyzed by finite element analysis. The results showed that the degree of stress concentration dropped significantly with chamfers on the rack,and with the increase of the fillet radius,the contact stress on the both ends of the rack deceases first then increases to a certain extent. …”
Get full text

Optimal Design of Single-stage Double-arc Spiral Bevel Gear Nutation Reducer by Zheng Lin, Ligang Yao, Tongke Su, Zheng Sun

“…According to the optimized parameters of gear， the three-dimensional model of the nutation bevel gear is established，and its finite element loading strength is analyzed. The results show that the contact area of single-stage nutation bevel gear is large because there are many teeth and concave-convex tooth surfaces in contact at the same time，the Mises stress distribution on the internal and external bevel gears is uniform，but the stress value at the top of the small end of the external bevel gear is larger. …”
Get full text

CONSTRAINT EFFECT ANALYSIS OF THE SEMI-ELLIPTICAL SURFACE CRACK FOR A REACTOR VESSEL SUBJECTED TO PRESSURIZED by WANG ZhongXian, GUO HuaJing

“…The specimen is a reactor pressure vessel with a semi-elliptical surface crack with axial orientation and its 3D finite element numerical modeling is built. Based on J-A₂ two parameters method,analysis is performed by considering constraint effect,at T = 561 K,p = 10 MPa. …”
Get full text