# Validation of a temperature-dependent elasto-viscoplastic material model for a talcum-filled polypropylene/polyethylene co-polymer using glove box flap component tests

## TL;DR

This paper validates a new temperature-dependent elasto-viscoplastic material model for a talcum-filled polypropylene/polyethylene co-polymer, demonstrating its accuracy in predicting impact behavior in automotive glove box flap components.

## Contribution

It introduces and validates a novel temperature-dependent elasto-viscoplastic material model for polymers used in automotive parts.

## Key findings

- Model accurately predicts impact test results
- Good agreement between simulation and experiments
- Enhanced understanding of polymer behavior at various temperatures

## Abstract

In the automotive industry, thermoplastic polymers are used for a significant number of interior and exterior parts. These components have to pass all underlying crash and safety relevant tests, where a proper performance is desired in the range of low to high ambient temperatures. Today, the vehicle design is heavily aided by numerical simulation methods for advancing towards a prototype free vehicle development. This requires an accurate modeling of the temperature- and ratedependent, elasto-viscoplastic mechanical response of the polymer structures. In this work, the validation of a novel elasto-viscoplastic temperature-dependent material model is performed using glove box flap segments subjected to impact loading by a spherical punch in a custom-build loading frame. The proposed material model shows a very good prediction of the experimental results.