Study on Meshing Force and Rigid-Flexible Coupling Dynamic Simulation of Cycloid Drive

2014 ◽  
Vol 1039 ◽  
pp. 36-43
Author(s):  
De Yu Su ◽  
Shan Ming Luo ◽  
Jian Wang
Keyword(s):  
Dynamic Simulation ◽  
Equivalent Stress ◽  
Theoretical Method ◽  
Comparison Study ◽  
Ansys Software ◽  
Flexible Coupling ◽  
Gear Teeth ◽  
Gear Design ◽  
Maximum Equivalent Stress ◽  
Coupling Dynamic

The meshing force between pin wheels and gear teeth of modified and standard cycloidal gears is calculated. The parametric model of cycloidal gear and pin wheels is built. The flexible processing of cycloidal gear and pin wheel is conducted using Ansys software. The virtual prototype of cycloid reducer is built. The dynamic simulation of rigid-flexible coupling of modified and standard cycloidal gears has been developed, respectively. The meshing force with friction is calculated and the maximum equivalent stress is obtained. A comparison study of the meshing force using theoretical method is also carried out. It is significant to provide theoretical and technical supports for cycloidal gear design.

Dynamic Simulation for Driver-Tricycle-Road System with Rigid-Flexible Coupling

2011 ◽  
Vol 421 ◽  
pp. 240-245
Author(s):  
Xiang Han
Keyword(s):  
Dynamic Simulation ◽  
Dynamic Theory ◽  
Dynamic Performance ◽  
Flexible Body ◽  
Tire Model ◽  
Performance Simulation ◽  
Flexible Coupling ◽  
The Road ◽  
Coupling Dynamic ◽  
Coupling Dynamic Model

Performance simulation for driver-tricycle-road hasn’t been reported currently. According to rigid-flexible coupling dynamic theory, this article took the frame and the spring as the spatial flexible body, used the UA tire model, considered the engine and the road surface drove, established tricycle rigid-flexible coupling dynamic model based on driver-tricycle-road environment and simulated its system modality, acceleration and brake dynamic characteristic. The simulation result indicated this tricycle has the good dynamic performance and the conclusion has the important project practical value.

Research on the Initial Disturbance of Vehicular Missile with System Vibration Analysis

2012 ◽  
Vol 625 ◽  
pp. 134-139 ◽  
Author(s):  
Chong Zhang ◽  
Yi Jiang
Keyword(s):  
Flow Field ◽  
Dynamic Simulation ◽  
Vibration Analysis ◽  
Jet Flow ◽  
Initial Disturbance ◽  
Flexible Coupling ◽  
Study Results ◽  
System Vibration ◽  
Coupling Dynamic ◽  
Coupling Dynamic Model

This paper is based on the complex multiple vehicular missile launch simulation model, researches the influence of combustion jet flow to the initial disturbance of missile. It establishes rigid-flexible coupling dynamic model by use of Adams and Ansys, and calculates the value of combustion jet flow field in missile box by means of Fluent. The rigid-flexible coupling dynamic simulation for the whole launch process is carried out. The study results show that the simulation with loading jet flow can accurately tend to real launch environment, it has great significance to optimize the simulation and to improve the accuracy of the simulation.

Optimal Design of Triangle Fastening Screw Thread's Turn Number

2011 ◽  
Vol 314-316 ◽  
pp. 657-660
Author(s):  
Jian Min Chen ◽  
Meng Zhang ◽  
Jia Deng
Keyword(s):  
Optimal Design ◽  
Research Method ◽  
Equivalent Stress ◽  
Coupled Model ◽  
The Other ◽  
Screw Thread ◽  
Ansys Software ◽  
Axial Pressure ◽  
Maximum Equivalent Stress ◽  
Screw Threads

The paper firstly numerically simulates the coupled model of triangle fastening screw threads in the application of ANSYS software. Calculate stress intensity of the screw thread on the axial pressure of 200MPa. The fittest coupled turn number of the screw nut is designed to make sure the strength of coupled teeth and make every turn of the screw thread go on very well and also save material. The maximum equivalent stress of the screw thread changes linearly with the axial pressure. The stress of the thread's root is greater than that of the thread's top so that the root is easily damaged. The paper's research method can apply to the optimal design of the other patterns of screw thread's turn number.

Optimization Design of EMU Process Bogie Wheel Frame Based on ANSYS

2014 ◽  
Vol 556-562 ◽  
pp. 1446-1449
Author(s):  
Jun Dai
Keyword(s):  
Optimization Design ◽  
Equivalent Stress ◽  
Static Characteristic ◽  
Frame Structure ◽  
Ansys Software ◽  
Modal Shape ◽  
Structure Deformation ◽  
Maximum Equivalent Stress ◽  
Saw Blade ◽  
D Model

According to the saw blade for process bogie structure characteristics,the use of Pro /E 3 d software based on the 3 d model,with ANSYS software,a static and modal analysis,obtained the stress pattern,structure deformation diagram and the former 6 order natural frequency and modal shape. The analysis results show that the node the maximum equivalent stress and the maximal displacement nodes are within the scope of the provisions,the data are meet the requirements,frame structure overall stiffness is better,frame has good static characteristic and dynamic characteristic,can meet the design requirements.And on this basis to frame was further optimized,so as to save materials,reduce cost.The theoretical basis is provided for the development of the process bogie .

Dynamic Load Simulation Analysis of Hemp Stalk

2013 ◽  
Vol 303-306 ◽  
pp. 2724-2726
Author(s):  
Xue Qiang Liu ◽  
Jian Chun Zhang ◽  
Hao Zhang ◽  
Xin Hu
Keyword(s):  
Feeding Rate ◽  
Rotation Speed ◽  
Simulation Analysis ◽  
Equivalent Stress ◽  
Stress And Strain ◽  
Ansys Software ◽  
Bast Fiber ◽  
Maximum Equivalent Stress ◽  
The Difference ◽  
Load Simulation

The distribution of maximum equivalent stress on hemp stalks at different roller speeds were scavenged by LS-PREPOST function. The stress and strain distributions of hemp stalk under the transversely even-distributed load are analyzed through ANSYS software. The results show that hemp decortication largely depended on the rotation speed of separation roller and the feeding rate. In addition, the failure degree of bast fiber, the maturity and the water content of the stalk, and the difference in mechanical properties and geometrical size should be also taken into account.

Rigid-Flexible Coupling Dynamic Analysis of Excavator Drive Axle

2012 ◽  
Vol 268-270 ◽  
pp. 1053-1057
Author(s):  
Jin Ze Li
Keyword(s):  
Simulation Model ◽  
Dynamic Simulation ◽  
Initial Response ◽  
Basic Structure ◽  
Hysteresis Phenomenon ◽  
Flexible Coupling ◽  
Dynamic Simulation Model ◽  
Coupling Dynamic ◽  
Drive Axle ◽  
Multi Body

Based on drive axle basic structure of the wheel excavator, the paper established virtual prototype simulation model and built drive axle rigid-flexible coupling multi-body dynamic simulation model. According to dynamic simulation response results, it explored the curves of flexible body changed more smoothly when it reached steady state, as gear meshing force of key parts. Initial response of flexible shaft was more violent than multi-rigid body system, and the maximum mutation value reaching about 7%, where has hysteresis phenomenon. The research can supply important theory basis for the improving of wheel excavator drive axle working performance.

Dynamic Simulation Analysis of Shipborne Missile Launching under High-Wave-Level Environment

2012 ◽  
Vol 569 ◽  
pp. 380-385
Author(s):  
Zhou Zhong ◽  
Yi Jiang ◽  
Yong Yuan Li ◽  
Chong Zhang
Keyword(s):  
Dynamic Response ◽  
Dynamic Model ◽  
Dynamic Simulation ◽  
Simulation Analysis ◽  
Simulation Method ◽  
Flexible Coupling ◽  
High Wave ◽  
Model And Simulation ◽  
Coupling Dynamic ◽  
Coupling Dynamic Model

In order to study the dynamic response of shipborne missile vertical launching under high-wave-level environment, the rigid-flexible coupling dynamic model of launching system was built by ways of virtual prototype technology. According to simulations for different launching conditions, missile attitude parameters were acquired, and interference of various parts was analyzed. The result shows that the dynamic model and simulation method proposed in this paper are effective and practicable.

scholarly journals Finite Element Modeling of Residual Stress at Joint Interface of Titanium Alloy and 17-4PH Stainless Steel

Metals ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 629
Author(s):  
Nana Kwabena Adomako ◽  
Sung Hoon Kim ◽  
Ji Hong Yoon ◽  
Se-Hwan Lee ◽  
Jeoung Han Kim
Keyword(s):  
Residual Stress ◽  
Finite Element ◽  
Stainless Steel ◽  
Finite Element Modeling ◽  
Equivalent Stress ◽  
Stress Gradient ◽  
Joint Interface ◽  
Element Modeling ◽  
Actual Experiment ◽  
Maximum Equivalent Stress

Residual stress is a crucial element in determining the integrity of parts and lifetime of additively manufactured structures. In stainless steel and Ti-6Al-4V fabricated joints, residual stress causes cracking and delamination of the brittle intermetallic joint interface. Knowledge of the degree of residual stress at the joint interface is, therefore, important; however, the available information is limited owing to the joint’s brittle nature and its high failure susceptibility. In this study, the residual stress distribution during the deposition of 17-4PH stainless steel on Ti-6Al-4V alloy was predicted using Simufact additive software based on the finite element modeling technique. A sharp stress gradient was revealed at the joint interface, with compressive stress on the Ti-6Al-4V side and tensile stress on the 17-4PH side. This distribution is attributed to the large difference in the coefficients of thermal expansion of the two metals. The 17-4PH side exhibited maximum equivalent stress of 500 MPa, which was twice that of the Ti-6Al-4V side (240 MPa). This showed good correlation with the thermal residual stress calculations of the alloys. The thermal history predicted via simulation at the joint interface was within the temperature range of 368–477 °C and was highly congruent with that obtained in the actual experiment, approximately 300–450 °C. In the actual experiment, joint delamination occurred, ascribable to the residual stress accumulation and multiple additive manufacturing (AM) thermal cycles on the brittle FeTi and Fe2Ti intermetallic joint interface. The build deflected to the side at an angle of 0.708° after the simulation. This study could serve as a valid reference for engineers to understand the residual stress development in 17-4PH and Ti-6Al-4V joints fabricated with AM.

scholarly journals Numerical Simulation and Experimental Study on Axial Stiffness and Stress Deformation of the Braided Corrugated Hose

2021 ◽  
Vol 11 (10) ◽  
pp. 4709
Author(s):  
Dacheng Huang ◽  
Jianrun Zhang
Keyword(s):  
Numerical Simulation ◽  
Geometric Model ◽  
Equivalent Stress ◽  
Element Model ◽  
Maximum Error ◽  
Structural Features ◽  
Axial Stiffness ◽  
Frictional Stress ◽  
Maximum Equivalent Stress ◽  
Simulation Results

To explore the mechanical properties of the braided corrugated hose, the space curve parametric equation of the braided tube is deduced, specific to the structural features of the braided tube. On this basis, the equivalent braided tube model is proposed based on the same axial stiffness in order to improve the calculational efficiency. The geometric model and the Finite Element Model of the DN25 braided corrugated hose is established. The numerical simulation results are analyzed, and the distribution of the equivalent stress and frictional stress is discussed. The maximum equivalent stress of the braided corrugated hose occurs at the braided tube, with the value of 903MPa. The maximum equivalent stress of the bellows occurs at the area in contact with the braided tube, with the value of 314MPa. The maximum frictional stress between the bellows and the braided tube is 88.46MPa. The tensile experiment of the DN25 braided corrugated hose is performed. The simulation results are in good agreement with test data, with a maximum error of 9.4%, verifying the rationality of the model. The study is helpful to the research of the axial stiffness of the braided corrugated hose and provides the base for wear and life studies on the braided corrugated hose.

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