摘要
为了对测控电路进行更好的缓冲保护,提出阶梯形金属壳的几何构型。利用LS-DYNA对3组不同厚度的阶梯形壳在不同载荷作用下进行仿真模拟,从屈曲模态、比吸能、加速度缓冲效果等方面进行缓冲吸能特性评估,并通过落锤试验进行验证。结果表明:阶梯形壳屈曲模态为轴对称叠缩模式,且相比等效厚度的圆柱壳,阶梯形壳具有更好的比吸能与加速度缓冲效果。
In order to have a better buffering of testing circuit,the geometric configurations of stepped metal shell were put forward. LS-DYNA was applied to simulate the stepped shell of three groups of different thickness under different loads,and the cushioning properties were evaluated from three aspects of the buckling mode,the specific energy absorption and the cushioning effect,and verified by drop-weight test. The results show that stepped shell buckles in axisymmetric fold reduction mode,and has a better cushioning properties,compared with cylindrical shell with the equivalent thickness.
出处
《兵器材料科学与工程》
CAS
CSCD
北大核心
2016年第6期92-97,共6页
Ordnance Material Science and Engineering
基金
国家自然基金资助项目(51275488)
关键词
阶梯形金属壳
等效厚度
圆柱壳
缓冲吸能
落锤试验
stepped metal shell
equivalent thickness
cylindrical shell
energy absorption
drop-weight test
