Analysis of the Composite Sample Under Low Velocity Multi-impact Test: FEA Investigation

The effect of the stacking sequence under multi-impact was investigated in this paper. Finite element (FE) model was prepared for the multi-impact composite sample while taking Hashin failure criteria into account. Force, impact time and absorbed energy of the sample were computed for each impact. The stacking sequence comparison was carried out that depends upon peak force, maximum impact time, absorbed energy and damage region. From the results, it is evident that each impact degrades the material properties and brings it close toward the fatal condition. From FE analysis, it was observed that the backside of the samples gained more damage in comparison with the front side, which could be attributed solely to compression and tension. Analysis of the result discerns that there exists the correlation between absorbed energy and the damage region. The FE model showcased here demonstrates the potential to investigate the damage that occurred to the composite material that was under multiple impacts.