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Erschienen in:
2020 | OriginalPaper | Buchkapitel
Numerical Investigation of Tri-Axial Braid Composite Structures as Crush Specimens Using the VPS-Solver
verfasst von : Sven Hennemann, Volker Hohm, Peter Horst, Lasse Twardy, Philip Zimmermann
Erschienen in: Simulation Science
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Abstract
This paper describes a new modelling approach for numerical investigations on the crushing behavior of tri-axial braid composite structures using the Virtual Performance Solution (VPS)-solver (also known as PamCrash; [1]) by way of its application to automotive related specimens.
In current VPS software, the crushing mechanism is modelled by a special crushing ply (PLY100), which is capable to model the mentioned mechanism phenomenologically but not able to behave as a splaying material which can possibly interact with other materials or itself [4]. With the presented novel approach, the visual structural behavior of a fiber reinforced plastic (FRP) sample and the shape of the corresponding load-displacement-curve can be simulated quiet accurately, especially for plane and oblique impactors. It is based on shell elements which are arranged in stacked order and implies a developed modelling strategy. In addition, a cohesive interface is defined to join the shell layers with each other. This interface acts as a matrix phase mixed with characteristics of braid yarns and contains a model for delamination. For experimental validation, a small extract was resorted of a large experimental study using a drop-weight-tower [8].