Validation of Polymer Material Model Using Tensile Test Simulations and Mesh Sensitivity Analysis

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27230%2F25%3A10259196" target="_blank" >RIV/61989100:27230/25:10259196 - isvavai.cz</a>

Výsledek na webu

<a href="http://experimentalni-mechanika.cz/cs/konference/konference/2025.html" target="_blank" >http://experimentalni-mechanika.cz/cs/konference/konference/2025.html</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Validation of Polymer Material Model Using Tensile Test Simulations and Mesh Sensitivity Analysis

Popis výsledku v původním jazyce

In crash simulations, precise material modeling is essential to ensure the accuracy of numerical results. Polymer materials, due to their complex deformation behavior under dynamic loading, require carefully validated models. This work focuses on validating material card developed for ASA polymer, which are commonly used in the automotive industry. The objective was to verify the accuracy of material card by comparing simulation results with experimental tensile data across three strain rates 0.01, 1.0 and 100 s^-1. In addition, a mesh sensitivity analysis was performed to assess the effect of element size on simulation outcomes. The findings confirm the reliability of the developed models and provide recommendations for their application in crash simulations. Finite element simulations were performed in the VPS solver. The simulations aimed to replicate experimental tensile tests at three strain rates:0.01, 1.0 and 100 s^-1. Stress-strain relationships and failure curves (maximum strain vs. strain rate) were obtained experimentally using tensile, flexural and DMA tests and used to define the material behavior. A shell model was used with defined boundary conditions to ensure simulation accuracy. Tensile force and elongation were recorded and compared with experimental results. For the highest strain rate, when elongation could not be measured, force-time curves were used instead.

Název v anglickém jazyce

Validation of Polymer Material Model Using Tensile Test Simulations and Mesh Sensitivity Analysis

Popis výsledku anglicky

In crash simulations, precise material modeling is essential to ensure the accuracy of numerical results. Polymer materials, due to their complex deformation behavior under dynamic loading, require carefully validated models. This work focuses on validating material card developed for ASA polymer, which are commonly used in the automotive industry. The objective was to verify the accuracy of material card by comparing simulation results with experimental tensile data across three strain rates 0.01, 1.0 and 100 s^-1. In addition, a mesh sensitivity analysis was performed to assess the effect of element size on simulation outcomes. The findings confirm the reliability of the developed models and provide recommendations for their application in crash simulations. Finite element simulations were performed in the VPS solver. The simulations aimed to replicate experimental tensile tests at three strain rates:0.01, 1.0 and 100 s^-1. Stress-strain relationships and failure curves (maximum strain vs. strain rate) were obtained experimentally using tensile, flexural and DMA tests and used to define the material behavior. A shell model was used with defined boundary conditions to ensure simulation accuracy. Tensile force and elongation were recorded and compared with experimental results. For the highest strain rate, when elongation could not be measured, force-time curves were used instead.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

20300 - Mechanical engineering

Projekt

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Návaznosti

O - Projekt operacniho programu

Rok uplatnění

2025

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

Experimental Stress Analysis : 63rd international conference : 27. - 29. May, 2025, Klášter Hradiště nad Jizerou, Czech Republic : proceedings of full papers

ISBN

978-80-7494-763-6

ISSN

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e-ISSN

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Počet stran výsledku

6

Strana od-do

103-108

Název nakladatele

Technical University of Liberec

Místo vydání

Liberec

Místo konání akce

Klášter Hradiště nad Jizerou

Datum konání akce

27. 5. 2025

Typ akce podle státní příslušnosti

EUR - Evropská akce

Kód UT WoS článku

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