Abstract
This paper describes key features of an advanced, physically-based, numerical material model for predicting the static and dynamic, failure and damage, response of polymer matrix composites with fibrous UD plies. The model has been implemented into the explicit Finite Element code LS-DYNA3D for solid brick elements with one integration point.
A comprehensive test programme was conducted for characterising the high velocity impact response of a class of NCF/Epoxy composites. The impact tests were conducted for varying impact conditions and parameters such as: impact angle, coupon thickness, laminate lay-up and projectile material. Data from these tests was reduced in the form of ballistic curves, mass of target debris generated upon complete penetration, and (C-Scan) impact damage areas. This data was used for validation of the proposed model.
General conclusions from this work indicate that physically-based modelling approaches can improve considerably the predictive capabilities of current FE codes for structural analysis applications.
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Raimondo, L., Iannucci, L., Robinson, P., Pinho, S.T. (2008). A Numerical Material Model for Predicting the High Velocity Impact Behaviour of Polymer Composites. In: Mechanical Response of Composites. Computational Methods in Applied Sciences, vol 10. Springer, Dordrecht. https://doi.org/10.1007/978-1-4020-8584-0_8
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DOI: https://doi.org/10.1007/978-1-4020-8584-0_8
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