摘要
缓冲材料的可靠性成为其产品商业化过程中的一个重要问题,而冲击断裂是导致其性能失效的主要原因。以聚氨酯和泡沫铝为研究对象,分别建立了两者的缓冲模型,用ANSYS/LS-DYNA软件对各缓冲模型进行了冲击载荷响应分析,得到了各模型的变形情况,研究两者在冲击环境下的可靠性。进行了弹体的侵彻环境分析和应力冲击环境仿真,通过比较聚氨酯和泡沫铝在不同冲击环境下的应力-应变曲线,分析了两者的缓冲性能。结果表明,泡沫铝的缓冲性能相比聚氨酯具有明显优越性。
The reliability of buffer material was a key problem for its commercial application. The fracture was a main factor for the failure. Taking polyurethane and aluminum foam as the research object, the each model was set up. A new analysis in connection with the response of impact on the each buffer model was proposed based on ANSYS/LS-DYNA. The deflection of the each model was obtained, the reliability of the both in the shock environment was researched. The environmental analysis of the projectile penetration and the stress impact environment simulation are performed to each cushion model, through comparing the polyurethane and aluminum foam in the stress-strain curve under different impact environment, the cushioning property of the both was analyzed. The experimental results show that the cushioning property of aluminum foam is better than that of polyurethane and it has obvious superiority.
出处
《热加工工艺》
CSCD
北大核心
2015年第8期74-78,共5页
Hot Working Technology
关键词
聚氨酯
泡沫铝
应力-应变曲线
可靠性
缓冲
polyurethane
aluminum foam
stress-strain curve
reliability
buffer
作者简介
杨江涛（1988-），男，山西运城人，硕士研究生；研究方向为惯性测试技术及控制；E-mail：yangjiangtao_nuc@163．com
