Metalik Plakaların Hiper Hızlı Çarpma Davranışı Üzerine Sayısal Bir Çalışma

Abstract

Hyper velocity impact is a well-known problem due to micro meteoroid coincidence with space structures. Hence, hyper velocity impact behavior of materials is an interesting topic for researchers. Despite this fact, experimental studies require heavy costs to install hyper velocity impact systems. For this reason, numerical efforts come into prominence to understand hyper velocity impact events in a cost-effective way. In this work, a numerical model was built to simulate hyper velocity impacts on metallic plates. The model was validated by using the experimental results of a previous paper. Two different factors were investigated in impact conditions. The first one was target plate material and the other one was impact angle. Aluminum alloy Al 6061-T6 and A36 steel were used as the plate material due to their applications in space structure components. Impact angle was varied as 30°, 60° and 90° in the simulations. According to the results, plate material leads to a variation in fragmentation especially in normal impacts. Impact angle effect is observed in damage size on plates. Impact hole on target plates turn from circular to elliptical form by reducing impact angle.