The Optimization of Piston Groove Diameter Based on ABAQUS

2013 ◽  
Vol 397-400 ◽  
pp. 1045-1049
Author(s):  
Sheng Guan Qu ◽  
Wen Long Li ◽  
Bin Li
Keyword(s):  
Contact Pressure ◽  
Analysis Software ◽  
Low Friction ◽  
Element Analysis ◽  
Wear Resistant ◽  
Seal Failure ◽  
The Finite Element Analysis ◽  
Two Factors ◽  
The Relationship ◽  
Lower Contact

Two factors must be given considered in low friction cylinder , which are sealing and wear. A lower contact pressure can lead to seal failure. However, a heavier contact press can increase friction force and wear. In the present paper a method have been proposed to obtain the optimal contact pressure between PTFE wear-resistant ring and the steel bushing at first, with analysis of the relationship among the surface roughness, the sealing contact pressure and the leakage. Secondly,the piston groove Diameter has been designed by using the finite element analysis software of ABAQUS to simulate the Mooney-Rivlin model, which is corresponding to this optimal contact pressure. On the premise of meeting the requirement of the specific leakage standard between the cylinder and the wear-resistant ring, the optimal contact pressure and the corresponding piston groove size have been obtained, with different surface roughnesses of the friction pairs.

Punch Wear in the Forming of Deep Holes with Pulse Ram Motion on a Servo Press

2014 ◽  
Vol 611-612 ◽  
pp. 127-133 ◽  
Author(s):  
Ryo Matsumoto ◽  
Hiroshi Utsunomiya
Keyword(s):  
Cold Extrusion ◽  
Low Friction ◽  
Element Analysis ◽  
Liquid Lubricant ◽  
Backward Extrusion ◽  
Servo Press ◽  
The Finite Element Analysis ◽  
The Relationship ◽  
Punch Wear ◽  
Extrusion Method

For the fabrication of lightweight components such as hollow components, we proposed a cold extrusion method for forming of deep holes that utilizes a punch with an internal channel for the supply of liquid lubricant using a servo press. The relationship between the punch ram motion and the punch wear in the proposed forming method is investigated by the finite element analysis in this study. The punch wear is determined by using the Archard’s equation. Although low friction at specimen–punch interface realizes in the forming with pulse punch ram motion (proposed forming method), the punch wear in the backward extrusion with pulse punch ram motion is 1.1–2.4 times larger than that with no pulse punch ram motion (conventional forming method). The influence of punch ram motion and friction on the punch wear is discussed.

Investigation on Multiple Piezoelectric Effect of Piezoelectric Crystal Under Applied Electric Field

2008 ◽  
Author(s):  
Baoyuan Sun ◽  
Yinhui Shi ◽  
Min Qian ◽  
Jun Zhang ◽  
Zhonghua Zhang
Keyword(s):  
Electric Field ◽  
Applied Electric Field ◽  
Piezoelectric Effect ◽  
Field Analysis ◽  
Experimental Result ◽  
Analysis Software ◽  
Element Analysis ◽  
The Finite Element Analysis ◽  
Converse Piezoelectric Effect ◽  
The Relationship

Based on the theory of classical piezoelectricity, the relationship between the generation of multiple piezoelectric effect under applied electric field and boundary conditions is analyzed. The generating process of multiple piezoelectric effect is elaborated and the formulas of secondary direct and tertiary converse piezoelectric effect are deduced. The displacement or voltage generated by primary converse, secondary direct and tertiary converse piezoelectric effect is calculated by using coupled-field analysis function in the Finite Element Analysis software-ANSYS. Experimental research of multiple piezoelectric effect under applied electric field is performed through PZT-5 stack. The experimental result verifies the existence of multiple piezoelectric effect. Experimental data shows that voltage and displacement generated by secondary direct and tertiary converse piezoelectric effect respectively are linear with the applied voltage. Both the simulation and experimental results prove that the theoretical analysis is accurate.

Design Research of Steel Pipe Combination of Angle Steel Tower of XiYue 220kV Cross Section

2013 ◽  
Vol 470 ◽  
pp. 408-411 ◽  
Author(s):  
Yan Zhong Ju ◽  
Xiao Xu Fu ◽  
Neng Xian Zeng
Keyword(s):  
Finite Element Analysis ◽  
Cross Section ◽  
Design Research ◽  
Axial Stress ◽  
Steel Pipe ◽  
Stress Difference ◽  
Analysis Software ◽  
Element Analysis ◽  
The Finite Element Analysis ◽  
Angle Steel

Given the path situation of Xiyue substation 220kV four outlets project crossing Shunde waterway section,this article applies of Dao Heng tower full stress analysis software and the finite element analysis software ANSYS to two steel pipe combination of angle steel towers to carry on design research,contrast axial stress of two kinds of software,analyse the reasons of axial stress difference.

Thermal Error Modeling of Precision Positioning Stage

2013 ◽  
Vol 694-697 ◽  
pp. 767-770
Author(s):  
Jing Shu Wang ◽  
Ming Chi Feng
Keyword(s):  
Thermal Deformation ◽  
Thermal Error ◽  
Error Modeling ◽  
Precision Positioning ◽  
Third Order ◽  
Element Analysis ◽  
The Finite Element Analysis ◽  
Positioning Stage ◽  
Order Polynomial ◽  
The Relationship

As the thermal deformation significantly impacts the accuracy of precision positioning stage, it is necessary to realize the thermal error. The thermal deformation of the positioning stage is simulated by the finite element analysis. The relationship between the temperature variation and thermal error is fitted third-order polynomial function whose parameters are determined by genetic algorithm neural network (GANN). The operators of the GANN are optimized through a parametric study. The results show that the model can describe the relationship between the temperature and thermal deformation well.

Finite Element Analysis and Optimization of the Truss of Installing Wave-Maker Based on ANSYS

2013 ◽  
Vol 313-314 ◽  
pp. 1038-1041
Author(s):  
Shou Jun Wang ◽  
Xing Xiong ◽  
Chao Li
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Design Parameters ◽  
Analysis Software ◽  
Element Analysis ◽  
Large Span ◽  
The Finite Element Analysis ◽  
Wave Maker

According to uncertainty of the design parameters for large span truss of installing wave-maker, in order to avoid the waste of materials,the truss is analyzed based on the finite element analysis software ANSYS to find out its weaknesses and various parts of the deformation. On the premise of ensuring the intensity and stiffness, the weight of the truss is reduced by adjusting its sizes and selecting different profiles, so as to achieve the optimization of the truss of installing wave-maker.

Kriging-Based Reliability Analysis and Variance-Based Sensitivity Analysis for an Idler Shaft

2015 ◽  
Author(s):  
Weimin Cui ◽  
Wei Guo ◽  
Zhongchao Sun ◽  
Tianxiang Yu
Keyword(s):  
Sensitivity Analysis ◽  
Influence Factors ◽  
Random Variables ◽  
Kriging Model ◽  
Element Analysis ◽  
Performance Function ◽  
The Finite Element Analysis ◽  
Inner Diameter ◽  
Sensitivity Method ◽  
The Relationship

In order to analyze the reason of failure and improve the reliability of the idler shaft, this paper studies the reliability and sensitivity for the idler shaft based on Kriging model and Variance Methods respectively. The finite element analysis (FEA) of idler shaft is studied in ABAQUS firstly. Then, combining the performance function and various random variables, the Kriging model of idler shaft is established and verified. Based on Kriging model which has been established, the relationship between random variables and the response value is studied, and the function reliability is calculated which explains why the failure of the idler shaft occurred frequently in service. Finally, the variance-based sensitivity method is used for sensitivity analysis of influence factors, the result shows that the reliability of idler shaft is sensitive to the inner diameter of body A and inner diameter of body B, which could contribute for the analysis and further improvement of idler shaft.

scholarly journals Form-Finding Analysis of a Class 2 Tensegrity Robot

2019 ◽  
Vol 9 (15) ◽  
pp. 2948
Author(s):  
Carlos G. Manríquez-Padilla ◽  
Oscar A. Zavala-Pérez ◽  
Gerardo I. Pérez-Soto ◽  
Juvenal Rodríguez-Reséndiz ◽  
Karla A. Camarillo-Gómez
Keyword(s):  
Static Analysis ◽  
Analysis Software ◽  
Form Finding ◽  
Element Analysis ◽  
Analysis Methodology ◽  
Geometric Configurations ◽  
The Finite Element Analysis ◽  
Kinematic Position ◽  
New Form ◽  
Form Finding Analysis

In this paper, a new form-finding analysis methodology for a class 2 tensegrity robot is proposed. The methodology consists of two steps: first, the analysis of the possible geometric configurations of the robot is carried out through the results of the kinematic position analysis; and, second, from the static analysis, the equilibrium positions of the robot are found, which represents its workspace. Both kinematics and static analysis are resolved in a closed-form using basic tools of linear algebra instead of the strategies used in literature. Four numerical experiments are presented using the finite element analysis software ANSYS©. Additionally, a comparison between the results of the form-finding analysis methodology proposed and the ANSYS© results is presented.

The Finite-Element Analysis of Cylindrical Helical Tooth Milling Cutter Based on Marc

2011 ◽  
Vol 52-54 ◽  
pp. 1147-1152
Author(s):  
Guang Guo Zhang ◽  
Wei Jiang ◽  
Hong Hua Zhang ◽  
Huan Wang
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Cutting Forces ◽  
Element Model ◽  
Local Deformation ◽  
Analysis Software ◽  
Element Analysis ◽  
Milling Cutter ◽  
Cutter Life ◽  
The Finite Element Analysis

In the traditional designs of milling cutter, we cannot get the required accuracy of machining as there may be local deformation on the edges, even more the cutter can break down. Aiming at this situation, a finite-element model of straight pin milling cutter with helical tooth are built using Marc, a nonlinear finite-element analysis software, the different cutting forces of the milling cutter during the cutting process are analyzed and the cutting forces of the milling cutter at different parameters are studied. We get the stress, the strain and the temperature distribution of the milling cutter in different situation. Our work offer a theoretical basis of improving stress of the cutter, designing the structure of cutters reasonably and analyzing the cutter failure as well as a new method of analysis and calculation of the cutter life and strength.

Checking and Strengthening Scaffolding of the Home Block for Hanging Cradle Construction of Qinhe Bridge

2013 ◽  
Vol 438-439 ◽  
pp. 926-929
Author(s):  
Ji Hao Chen ◽  
Yu Jia Gao ◽  
Sen Liu ◽  
Yong Peng Sun
Keyword(s):  
Limit State ◽  
Potential Danger ◽  
Load Case ◽  
Analysis Software ◽  
Element Analysis ◽  
Design Strength ◽  
Horizontal Tubes ◽  
The Finite Element Analysis ◽  
Actual Load ◽  
State Method

In order to ensure the safety of the scaffolding of the home block for hanging cradle construction, this paper makes use of probabilistic limit state method, and carries out the checking computation. According to the actual drawings of the Qinhe bridge and the actual load case, the analytical model is established through the finite element analysis software MIDAS/CIVIL. The results show that the slant tube may be flexural buckling, and the stress of side standing tube is over the design strength of material, so that there is potential danger of the scaffolding. After the horizontal tubes were installed along the boundary of scaffolding, the stresses of all tubes are less than the design strength of corresponding material.

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