科研之友
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摘要
The uniform monolithic metallic plate is the standard for assessing structural performance against blasts. For example, this has been the reference in recent work assessing the blast resistance of sandwich plates. Here, the performance of monolithic plates made from a hardening metal with high ductility is investigated by systematic optimization. The thickness distribution of clamped monolithic wide plates is optimized with respect to minimizing the permanent deflection at midspan under impulsive loads. The optimized plates are compared to a uniform plate of the same mass. Two load cases are considered: one with impulses acting uniformly along the plate, and one with impulses acting over a central patch. In both cases the reduction of permanent deflection of the optimized plate relative to the uniform plate is pronounced for small impulses but progressively smaller for larger impulses. For large impulses the optimal thickness distribution differs only slightly from that of a uniform plate. The study confirms the effectiveness of uniform thickness plates against large impulses.
- 出版日期2010-6
