Finite Element Analysis of Elastomers Using ANSYS

2012 ◽  
Author(s):  
Manoj Kunnil ◽  
David Yamarthi ◽  
Santhosh K. Kompally
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Material Characterization ◽  
Vibration Isolation ◽  
Large Deformations ◽  
Elastic Solids ◽  
Element Analysis ◽  
Linear Elastic ◽  
Elastomeric Materials ◽  
Isolation Systems

Elastomeric materials have a capability to withstand large deformations and still be able to fully recover their original dimensions. Natural and synthetic elastomers and their derivatives can reach strains as high as 500–1000%. Engineering materials, such as crystalline metals are classified as linear elastic solids, whereas elastomeric materials are considered as nonlinear elastic solids. Elastomers present a very complicated mechanical behavior that exceed the linear elastic theory and contain large deformations, plastic and viscoelastic properties. Finite element (FE) is a powerful tool to analyze such elastomers. Design of elastomeric systems in an industrial scenario generally requires (i) reliability and (ii) a minimum cycle time. This paper starts with a review of the hyperelastic theory, followed by a detailed discussion on the process involved in the material characterization of hyperelastic material like DuPont™ Viton® fluoroelastomer and polyacrylic elastomer in industrial application point of view. The paper also discusses guidelines to be followed in the various stages of material characterization such as testing, sampling and finite element simulation. Numerical stability issues associated with elastomeric modeling in finite element context and a set of guidelines to be followed in finite element analysis of elastomers are illustrated through a DuPont™ Viton® fluoroelastomer and polyacrylic elastomer pad vibration isolation systems. The above technique has been applied for designing vibration isolation systems for generators.

scholarly journals Mechanical behavior of ballasted railway track stabilized with polyurethane: A finite element analysis

2018 ◽  
Vol 251 ◽  
pp. 04056 ◽  
Author(s):  
Zelimkhan Khakiev ◽  
Alexander Kruglikov ◽  
Georgy Lazorenko ◽  
Anton Kasprzhitskii ◽  
Yakov Ermolov ◽  
...  
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Mechanical Behavior ◽  
Finite Element Simulation ◽  
Elasticity Modulus ◽  
Railway Track ◽  
Binding Agent ◽  
Element Analysis ◽  
Linear Elastic ◽  
Element Simulation

Analysis of mechanical behavior of ballast shoulder of railway track reinforced by polyurethane binding agent has been performed by the method of finite-element simulation Limitation of the model of linear-elastic properties of geocomposite has been displayed. Dependence of elasticity modulus of geocomposite on deformation value has been suggested. Influence of penetration depth of polyurethane binding agent on behavior of railway track construction under different train loads has been studied.

Considerations on Using the Strut and Tie Method for Modelling Coupling Beams

2017 ◽  
Vol 21 ◽  
pp. 116-121
Author(s):  
Vasile Murăraşu ◽  
Vasile Mircea Venghiac
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Linear Analysis ◽  
Numerical Analyses ◽  
Coupling Beam ◽  
Coupling Beams ◽  
Structural Walls ◽  
Element Analysis ◽  
Linear Elastic ◽  
Strut And Tie

This paper presents a synthesis of the numerical analyses regarding the method of modelling the coupling beams of structural walls. The directions of the struts and ties are established according to the results obtained after a linear-elastic finite element analysis. The results obtained after modelling using the Strut and Tie Method, with the struts and ties oriented along the diagonals of the coupling beam, coincide with the results obtained by applying the theory provided by EC8, which proves the viability of the method. This is also confirmed by the results obtained after a non-linear analysis was carried out in the LUSAS finite element environment.

Exploration of Fine Lines Profile Effects in Flexographic Printing

2013 ◽  
Vol 315 ◽  
pp. 458-462 ◽  
Author(s):  
Mohd Sallehuddin Yusof ◽  
Z. Said ◽  
M.I. Maksud
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Laser Machining ◽  
Element Analysis ◽  
Printing Plate ◽  
Computational Framework ◽  
Linear Elastic ◽  
Exploration Tool ◽  
Flexographic Printing ◽  
Hyperelastic Models

Line profile is an important consideration in printing functional devices particularly in printing very fine line for electronic applications. Since laser machining provides the opportunity to apply extreme fine lines with different profiles where unachievable mechanically. Laser ablated printing plate are costly to produce, hence it is appropriate to investigate this within a computational framework beforehand. Therefore several designs will be investigated with different geometry as the variables using both linear elastic and non linear hyperelastic models. The results exhibits that finite element analysis serves appropriately as an exploration tool where it worked well with experimental results.

Application of Two Methods for Notch Fatigue Life Prediction

2011 ◽  
Vol 488-489 ◽  
pp. 654-657
Author(s):  
Radu Negru ◽  
Liviu Marsavina ◽  
Hannelore Filipescu ◽  
Cristiana Caplescu
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Fatigue Life ◽  
Reduction Factor ◽  
Volumetric Method ◽  
Life Assessment ◽  
Strength Reduction Factor ◽  
Element Analysis ◽  
Linear Elastic ◽  
Notched Specimens

The aim of this paper is the application of two methods for notch fatigue life assessment, methods which are based on finite element analysis: the theory of critical distances and the volumetric method. Firstly, un-notched and notched specimens (for three different geometries) were tested in tension under constant-amplitude loading. The use of theory of critical distances (TCD) to predict the notch fatigue life involves the determination of the material characteristic length L based on experimental results obtained for the un-notched and one type of notched specimens. For the others notched geometries, based on linear-elastic finite element analysis, the fatigue strength is predicted using the TCD. In order to apply the volumetric method, elastic-plastic stress field around notches are considered and notch strength reduction factor are determined. Finally, the predictions of the two methods were compared with experimental fatigue data for notched specimens.

Fatigue Life Prediction of Girth Gear-Pinion Assembly Used in Kilns by Finite Element Analysis

2013 ◽  
Vol 372 ◽  
pp. 292-296 ◽  
Author(s):  
K. Annamalai ◽  
S. Sathyanarayanan ◽  
C.D. Naiju ◽  
Mohammed Shejeer
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Fatigue Life ◽  
Life Expectancy ◽  
Element Analysis ◽  
Linear Elastic ◽  
Gear Design ◽  
Steel Material ◽  
Rainflow Cycle Counting ◽  
Fatigue Life Analysis

This study is focused on predicting the fatigue life expectancy of Girth gear-pinion assembly used in cement industries. Gear design and modeling was carried out using a CAD package and analysis was done using finite element analysis software, ANSYS. AISI 4135-low alloy steel material properties are considered and linear elastic finite element analysis and fatigue life analysis were carried out. The variable amplitude load is applied to simulate the real time loading of the gear-pinion assembly. Rainflow cycle counting algorithm and Minars linear damage rule is employed to predict the fatigue life. The critical stress and the corresponding deformation are discussed in the results. Finally the life expectancy of the girth gear and pinion assembly is estimated which would be useful for the periodical maintenance of the gear assembly.

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