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2016
Presentation
Titel
An investigation on the influence of loading rate on the fracture toughness of UHMW-PE composites
Titel Supplements
Paper presented at the 17th European Conference on Composite Materials, ECCM 2016, 26-30th June 2016, Munich, Germany
Abstract
Ultra-high molecular weight polyethylene composites are frequently used in ballistic impact applications. For predictive modeling of impact scenarios it is important to consider potential effects of loading rate on the mechanical properties of the composite - especially the fracture toughness. In this article, the influence of loading rate on the mode I fracture toughness of Dyneema® HB26 is studied. It was found that the fracture toughness increases with increasing loading rate. A material model for cohesive interface elements is proposed which includes both, the rate dependency of the mode I fracture toughness and the rate dependency of the out-of-plane tensile strength. The model is implemented into ABAQUS/Explicit and verified against the experimental evidence.