Numerical simulation to assess the elastic-strain energy distribution in a silicon rubber disk subjected to a punch shear test (PST)

Finite element method simulations were implemented to understand how the strain energy is distributed in a disk-like sample during a punch shear test. Material’s Young modulus can be estimated from this test; however, there is not enough available information about the distribution of the strain ene...

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Bibliographic Details
Published inDyna (Medellín, Colombia) Vol. 83; no. 195; pp. 112 - 120
Main Authors Lopera-Valle, Adrian, Suárez-Bustamante, Fabio Alexander, Hernández-Ortiz, Juan Pablo
Format Journal Article
LanguageEnglish
Spanish
Portuguese
Published Bogota Universidad Nacional de Colombia 01.01.2016
Subjects
ballistic armor design
caucho siliconado
diseño de materiales balísticos
elasticidad
elasticity
energy
energía de deformación
ENGINEERING, MULTIDISCIPLINARY
Ensayo de Corte por Punzonado (PST)
Finite Element Method (FEM)
hyper
híper
Método de Elementos Finitos
Punch
Shear Test (PST)
silicon rubber
strain
silicon rubber
híper-elasticidad
Método de Elementos Finitos
Ensayo de Corte por Punzonado (PST)
hyper-elasticity
ballistic armor design
strain-energy
diseño de materiales balísticos
Finite Element Method (FEM)
caucho siliconado
Punch-Shear Test (PST)
energía de deformación
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Summary:Finite element method simulations were implemented to understand how the strain energy is distributed in a disk-like sample during a punch shear test. Material’s Young modulus can be estimated from this test; however, there is not enough available information about the distribution of the strain energy inside the sample during the deformation process. The proposed methodology seeks to give insight into the deformation process. Experimental results for a cured silicon rubber sample were used to validate the simulation results. It was found that the estimation of the Young modulus with the punch shear test depends on the ratio between the span-to-punch diameters. This conclusion applies to the simulated results, following Timoshenko’s theory for the deformation of thin plates. Understanding how energy is accumulated during a punch shear test is an important and useful characteristic in terms of the design of armor systems.
ISSN:0012-7353
2346-2183
DOI:10.15446/dyna.v83n195.49034