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为了研究复合材料层合板的分层起始载荷,对不同材料体系和不同铺层数的复合材料层合板进行了准静态压痕试验和落锤冲击试验.得到了复合材料层板的分层起始载荷和冲击分层损伤能量门槛值,并对损伤情况进行了分析.结果表明,层合板的落锤冲击试验的分层起始载荷与冲击能级有关,并且分层起始载荷值随冲击能级提高而增加;准静态压痕试验的分层起始载荷值要低于低速冲击试验的分层起始载荷值;当冲击能量达到层板分层损伤能量门槛值时,层板发生大量分层损伤,层合板刚度出现急剧下降.
In order to study the delamination initiation load of composite laminates, the quasi-static indentation test and drop-weight impact test of composite laminates with different material systems and different lay-up numbers were carried out. Layered laminates were layered Initial load and impact delamination damage energy threshold values, and the damage situation was analyzed.The results show that the delamination initiation load and the impact energy level of the delaminated impact test of the laminates are related, and the delamination initiation load value increases with the impact The initial loading value of the quasi-static indentation test is lower than that of the low-speed impact test; when the impact energy reaches the threshold energy value of laminar damage, a large amount of lamina occurs Stratified damage, laminate stiffness decreased sharply.