Simulation for laminate’s Delamination under out-of-Plane Impact with Modification of Interface Friction Effect
Source abstract
Abstract
This paper proposes a modified method to predict composite laminate’s delamination under out-of-plane impact, which takes the interface friction effect as physical mechanism to explain the phenomena of interface strength’s enhancement under transverse load. Firstly, bilinear model is chosen to describe the relationship between traction and separation. Secondly, a macromodel of composite laminate under out-of-plane impact is given to show how the interface strength is enhanced. Contact pair of adjacent layer and interface friction coefficient directly reflects the interface friction effect. Thirdly, criterion of delamination is modified based on the interface friction effect, which derives separation expressions of cohesive element under mixed mode fracture. Numerical example of different interface friction coefficients is given to check the modified method’s rigor and rationality, which is also validated by experiment. Compared with experiment results, the finite element simulation shows that the modified method possesses good accuracy in the prediction of composite laminate’s delamination under out-of-plane impact and definite meaning in the explanation for the phenomena of interface strength’s enhancement under transverse load instead of adjusting parameters of cohesive element subjectively and unreasonably.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Mechanical Behavior of Composites · Structural Analysis of Composite Materials · Textile materials and evaluations
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References (19)
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