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Numerical analysis of the brittle-ductile transition in the failure-mode in polymeric materials

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2013
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Trans Tech Publications Ltd.
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Abstract
In this paper we analyze, using the Finite Element Method, the process of brittle-ductile transition in the failure mode observed in polycarbonate notched specimens under impact loads. In order to analyze this transition we have implemented, through a user subroutine, a damage model which combines a tensional fracture criterion and an energetic, acting simultaneously. The competition between both criteria predicts the difference in material behavior from a critical impact velocity, and how this transition is produced on different planes through the thickness of the specimen. These results show the necessity of employing three-dimensional models for its study.
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Proceedings of: 8th International Symposium on Impact Engineering (ISIE 2013). Osaka, Japan, September 02-06, 2013.
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Polymers, Damage Models, Failure-Mode Transition
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Kobayashi, H., et al. (eds.) (2014). Proceedings of the 8th International Symposium on Impact Engineering. (pp.310-315). (Applied Mechanics and Materials, 566). Switzerland: Trans Tech Publications.