Numerical prediction of the low-velocity impact damage and compression after impact strength of composite laminates

Wei Tan, Brian Falzon, Louis Chiu, Mark Price

Research output: Contribution to conferencePaper

Abstract

Low-velocity impact damage can drastically reduce the residual mechanical properties of the composite structure even when there is barely visible impact damage. The ability to computationally predict the extent of damage and compression after impact (CAI) strength of a composite structure can potentially lead to the exploration of a larger design space without incurring significant development time and cost penalties. A three-dimensional damage model, to predict both low-velocity impact damage and compression after impact CAI strength of composite laminates, has been developed and implemented as a user material subroutine in the commercial finite element package, ABAQUS/Explicit. The virtual tests were executed in two steps, one to capture the impact damage and the other to predict the CAI strength. The observed intra-laminar damage features, delamination damage area as well as residual strength are discussed. It is shown that the predicted results for impact damage and CAI strength correlated well with experimental testing.
Original languageEnglish
Publication statusPublished - 08 Apr 2014
EventAdvanced Materials for Demanding Applications - Wales, Asaph, United Kingdom
Duration: 07 Apr 201409 Apr 2014

Conference

ConferenceAdvanced Materials for Demanding Applications
CountryUnited Kingdom
CityAsaph
Period07/04/201409/04/2014

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