SIMULATING THE RESPONSE Of THE PVC FOAM SANDWICH PANELSSUBJECTED TO LOW-VELOCITY IMPACT

Abstract

Abstract: Composite sandwich structure is relactively high susceptibility to damage caused by foreign object impact. This paper established the finite element model of closed PVC foam-based sandwich panels in Abaqus/Explicit based on hashin criterion and crushable foam plasticity model. The precision of the model results was compared with the literature experimental results and its correction was proved. Then, the influence of general contact and surface to surface contact on the contact force history and delamination area, the meshes sizes located on the fined area on the low velocity impact response was simulated by this model. The results show that surface to surface contact is more suitable to simulate the impact response of sandwich panels. Good agreement is achieved between simulation and experiments for force-time curve for impact energy of 4 J. The threshold load can’t be observed, but it can be observed near 0.0005 seconds when the mesh sizes are 1.0 and 1.5 mm.

Key words: low-velocity impact, foam sandwich panel, general contact, surface to surface contact

CLC Number:

TB332

CHEN Bo, ZHANG Yan-fei, WANG Zhi, ZHAO Gui-zhe. SIMULATING THE RESPONSE Of THE PVC FOAM SANDWICH PANELSSUBJECTED TO LOW-VELOCITY IMPACT[J]. Fiber Reinforced Plastics/Composites, 2016, 0(2): 29-34.

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