摘要
在对爆炸载荷下铝蜂窝夹芯板的变形机理和失效模式研究的基础上,文中试图建立铝蜂窝夹芯板的刚塑性动力分析模型。首先给出考虑芯层强度的拉—弯联合作用的屈服条件,考虑到冲击载荷作用时间相对于芯层的压缩和夹芯板的整体动力响应时间要短的多,应用修正的哈密尔顿原理,得到固支边界条件下受爆炸载荷作用的夹芯方板三阶段变形的塑性动力响应,得出其表达式。并与实验结果进行比较和分析,研究表明在考虑有限变形情况下,文中的分析结果和实验结果吻合较好。
Based on the extent of sanwich plate deformation and failure,an analytical model is developed for dynamic response at finite deflection of a fully clamped rectangular plate with cellular cores under blast loading in air.Considering that the blast-time and the core-compression time is more less than the overal dynamic response time,the deformation history is divided into three sequential stages and analytical expressions are derived for the deflection,degree of core compression,and for the overal structural ...
出处
《机械强度》
CAS
CSCD
北大核心
2010年第3期404-409,共6页
Journal of Mechanical Strength
基金
国家自然科学基金(90716005
10572100
10802055)
山西省自然科学基金(2007021005)资助项目~~
