The Research on Instant Contact Deformation of Round Link Chain Based on Symmetric Penalty Function Method

2012 ◽  
Vol 619 ◽  
pp. 361-364
Author(s):  
Wei Kang Li ◽  
Jun Mao
Keyword(s):  
Finite Element ◽  
Penalty Function ◽  
Working Condition ◽  
Penalty Function Method ◽  
Analysis Software ◽  
Element Analysis ◽  
Finite Element Software ◽  
Nonlinear Contact ◽  
Sudden Loading ◽  
Stress And Deformation

In order to analyze deformation and stress state of round link chain which it is generated by instant impact for sudden loading between the chains during the working condition, the method of symmetric penalty function was adopted to analyze contact between round link chains; and the finite element software ANSYS LS-DYNA was further used to carry on nonlinear contact analysis, the displacement curves , the stress and deformation with time were gained during the process of impact by simulating the process of the instant impact of chains. The results show that it is circular to the contact area of round link chains and it is the main reasons of damage that the greater stress and deformation of impact is caused when time lasts 0.05s through theoretical analysis and finite element analysis software. The theory equations of load conditions and the method of finite elements can provide a theoretical basis and simulation methods for analyzing the round link chain driving in a variety of different working conditions under the conditions of impact.

Analysis of Instant Contact Nonlinear on Round Link Chain Based on Symmetric Penalty Function Method

2011 ◽  
Vol 148-149 ◽  
pp. 272-275
Author(s):  
Wei Kang Li ◽  
Jun Mao ◽  
Xin Le Yang
Keyword(s):  
Finite Element ◽  
Working Conditions ◽  
Penalty Function ◽  
Function Method ◽  
Penalty Function Method ◽  
Element Analysis ◽  
Finite Element Software ◽  
Sudden Loading ◽  
Contact Impact ◽  
Stress And Deformation

In order to analyze deformation and stress state of round link chain which is generated by driving sprocket for sudden loading or starting moment between the chains during the working conditions, the symmetric penalty function method was utilized in contact-impact interface of LS-DYNA program and the finite element software ANSYS/LS-DYNA was used to carry on 3D nonlinear contact analysis of three round link chains, the curves of stress and deformation with varying time were gained by simulating the process of the instant contact-impact of chains. The results show that the largest stress value is appeared on the contacting curved arm of driven round link chain, the second stress value is connecting round link chain, the least stress value is driving round link chain; it is circular shape of the contact area of round link chains and it is the main reasons of damage that the largest stress and deformation values of impact is caused by instant changing loading when time lasts 0.05s, and the series gradually fluctuation of strength is led to fatigue through finite element analysis software. The symmetric penalty function method of finite elements can provide a theoretical basis and simulation methods for analyzing the round link chain driving in a variety of different working conditions under the conditions of contact-impact.

scholarly journals Failure Analysis of Gas Turbine Rotary Blade

2017 ◽  
pp. 1-6
Keyword(s):  
Finite Element ◽  
Gas Turbine ◽  
Rotor Blade ◽  
Rotor Blades ◽  
Centrifugal Forces ◽  
Analysis Software ◽  
Two Stage ◽  
Element Analysis ◽  
Finite Element Software ◽  
Super Alloy

In the present work the first stage rotor blade of a two- stage gas turbine has been analyzed for structural, thermal using ANSYS 9.0, which is a powerful Finite Element Software. In the present work, the first stage rotor blade of the gas turbine has been analyzed for the mechanical and radial elongations resulting from the tangential, axial and centrifugal forces. The gas forces namely tangential, axial were determined by constructing velocity triangles at inlet and exist of rotor blades. The rotor blade was then analyzed using ANSYS 9.0 for the temperature distribution. The material of the blade was specified as N155 but its properties were not given. This material is an iron based super alloy and structural and thermal properties at gas room and room temperatures. The turbine blade along with the groove is considered for the static, thermal, modal analysis. The first stage rotor blade of a two-stage gas turbine has been analyzed for structural, thermal using ANSYS 9.0 Finite Element Analysis software.

260t Ladle Stress and Deformation Finite Element Analysis

2014 ◽  
Vol 936 ◽  
pp. 1886-1889
Author(s):  
Yan Ping Sun ◽  
De Chen Zhang ◽  
Ming Yang ◽  
Yuan Li
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Working Conditions ◽  
Structural Deformation ◽  
Analysis Software ◽  
Element Analysis ◽  
Strength And Stiffness ◽  
Stress And Deformation ◽  
Distribution Of Stress ◽  
Optimal Designing

In this paper, iron ladle stress and deformation has been accurately calculated using finite element analysis software ANSYS based on 260t iron ladle in standing, lifting, tipping working conditions. Distribution of stress field was obtained. The stiffness and strength of the iron ladle has been evaluated. The results show that the iron ladle in the standing, lifting and tipping working conditions, structural deformation is small, the strength and stiffness meet the requirements. This research extends the working life of 260t iron ladle. It provides theoretical basis for producing and using of the iron ladle and further optimal designing.

Three-Dimensional Nonlinear Contact Finite Element Analysis of Mandibular All-on-4 Design

2015 ◽  
Vol 41 (2) ◽  
pp. e12-e18 ◽  
Author(s):  
Mostafa Omran Hussein ◽  
Mahmoud Elsayed Rabie
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Equivalent Stress ◽  
Stress And Strain ◽  
Element Analysis ◽  
Implant Position ◽  
Finite Element Software ◽  
Edentulous Mandible ◽  
Nonlinear Contact ◽  
Position And Orientation

The All-on-4 design was used successfully for restoring edentulous mandible. This design avoids anatomic cripples such as inferior alveolar nerve by tilting posterior implants. Moreover, tilting posterior implants of All-on-4 design had a mechanical preference than the conventional design. On the other hand, the anterior implants are parallel at the lateral incisor region. Several researches showed favorable results for tilting posterior implants. However, research did not study the influence of the anterior implant position or orientation on the mechanical aspects of this design. This study analyzes the influence of varying anterior implant position and orientation of the All-on-4 design using nonlinear contact 3D finite-element analysis. Three copied 3-dimensional models of the All-on-4 design were classified according to anterior implant position and orientation. The frictional contact between fixtures and bone was the contact type in this finite element analysis. Finally, von Mises stress and strain at implant and bone levels were recorded and analyzed using finite element software. Stress concentrations were detected mainly around the posterior implant at the loaded side. Values of the maximum equivalent stress and strain were around tilted implants of design III followed by design II, then design I. Changing the position or orientation of the anterior implants in All-on-4 design influences stress-strain distribution of the whole design.

Design and Finite Element Analysis of Corrugated Plate Boarding Bridge

2010 ◽  
Vol 97-101 ◽  
pp. 3727-3730
Author(s):  
Wen Hui Wei ◽  
Yan Zhu
Keyword(s):  
Finite Element Method ◽  
Finite Element Analysis ◽  
Finite Element ◽  
Analysis Software ◽  
Element Analysis ◽  
Design Requirements ◽  
Strength And Stiffness ◽  
Stress And Deformation ◽  
Element Method

With ANSYS finite element analysis software, finite element method is used to analyze the steel corrugated plate boarding bridge. Stress and deformation of the structure are obtained, and strength and stiffness are checked. Improvements are made on this basis to meet the design requirements.

The Effect of Hole behind Lining on Safety of Tunnel

2013 ◽  
Vol 477-478 ◽  
pp. 600-603
Author(s):  
Jun Liu ◽  
Guan Hua Zhang
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Safety Factor ◽  
Evaluation Method ◽  
Working Condition ◽  
Two Dimensional ◽  
Analysis Software ◽  
Plane Model ◽  
Element Analysis ◽  
Dangerous Section

ABAQUS finite element analysis software and load - structure method are adapted in this paper and the structure is simplified as a two-dimensional plane model. 25 kinds of working condition including five hole sizes: 0.6m, 1.2m, 1.5m, 1.8m, 2.1m and five hole positions varying from vault to arch springing are studied and the safety factor distribution of lining are obtained. By comparing the safety factor at dangerous section in lining with hole to that in no damage lining , a convenient evaluation method about the effect of hole to lining safety is proposed.

A Finite Element Analysis For Stiffness of Fixture Units

2005 ◽  
Vol 127 (2) ◽  
pp. 429-432 ◽  
Author(s):  
Y. Zheng, ◽  
Y. Rong, and ◽  
Z. Hou
Keyword(s):  
Finite Element ◽  
Contact Surface ◽  
Element Model ◽  
Normal Direction ◽  
Penalty Function Method ◽  
Strong Nonlinearity ◽  
Element Analysis ◽  
Nonlinear Contact ◽  
Newton Raphson ◽  
Tangential Directions

This paper presents a systematic finite element model to predict the fixture unit stiffness by introducing nonlinear contact elements on the contact surface between fixture components. The contact element includes three independent springs: two in tangential directions and one in the normal direction of the contact surface. Strong nonlinearity is caused by possible separation and sliding between two fixture components. The problem is formulated by the penalty function method and is solved by the Newton-Raphson procedure. The model was validated by two cases of analysis of a linear cantilever beam and a simple fixture unit with two components. The results are in agreement with the corresponding analytical solution of beams and the previous experimental results for fixture in the literature.

Finite Element Analysis of Elastic Membrane Coupling Based on MSC.patran

2011 ◽  
Vol 308-310 ◽  
pp. 1961-1965 ◽  
Author(s):  
Guang Kun Shan ◽  
Hai Long Zhang ◽  
Ying Bo Wang ◽  
Cheng Zhi Zeng
Keyword(s):  
Finite Element ◽  
Scientific Basis ◽  
Elastic Membrane ◽  
Design Standards ◽  
Element Analysis ◽  
Finite Element Software ◽  
Hexahedral Element ◽  
Wheel Torque ◽  
Stress And Deformation ◽  
Accurate Stress Analysis

The membrane coupling plays an essential role in the transfer process of the wind wheel torque. In order to meet the design requirements and get more accurate stress analysis state of membrane, based on the finite element software HyperMesh, membrane and the surrounding model is regularly meshed into hexahedral element, and to MSC.patran analysis platform, to check the strength of the coupling. The result of analysis showed that, the maximum stress and deformation of coupling can be met to the design standards and reach the requirements also. Using of hexahedral element, analysis time of CPU can be reduced and smoother stress and strain contours cloud can be also obtained, so it provides a more scientific basis for the design and manufacture of membrane coupling.

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