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夹芯结构具有高比强度、高比刚度和优异的吸能能力,已经被广泛应用于工程结构用来抵御高强度的爆炸冲击载荷.论文采用有限元数值模拟方法研究了爆炸载荷作用下四边固支夹芯曲板的动力响应.比较了同等质量下夹芯曲板、夹芯平板、实体曲板和实体平板四种结构的抗爆炸冲击性能,讨论了不同曲率和非对称因子对结构动力响应的影响,得到了使得夹芯曲板抗爆炸性能最佳的非对称因子.研究结果表明:夹芯曲板的抗爆炸冲击性能优于等质量的夹芯平板、实体曲板和实体平板结构,增大夹芯曲板的曲率能够提高结构的抗爆炸冲击性能.
Sandwich structure with high specific strength, high specific stiffness and excellent energy absorption capability has been widely used in engineering structures to resist high-intensity explosive impact loads.In this paper, the finite element method The dynamic response of the support structure with curved core is compared.The anti-explosion impact performance of the four structures with the same quality of the sandwich curved plate, the sandwich core plate, the solid curved plate and the solid plate is compared, and the influences of different curvatures and asymmetry factors on the structural dynamic response The results show that the anti-explosion impact performance of sandwich curved plate is better than that of sandwich plate, solid curved plate and solid flat plate with equal mass, Increasing the curvature of the sandwich plate increases the structural impact resistance.