铝蜂窝夹芯结构抗爆性能仿真分析与优化

利用CONWEP计算模型对铝蜂窝夹芯结构的抗爆性能进行了有限元分析，以背板最大变形和夹芯层比吸能作为抗爆性能指标，根据不同基体材料的组合结构建立了铝蜂窝夹芯结构的基准模型.基于基准模型，定量研究了铝蜂窝夹芯结构各部分结构参数和蜂窝胞元类型对其抗爆性能的影响规律.结果表明面板材料采用Al2024T351，背板材料采用RHA的组合结构具有良好的抗爆性能；相比于背板厚度变化，面板厚度的变化对铝蜂窝夹芯结构抗爆性能指标的影响更显著.应用构建代理模型的方法对铝蜂窝夹芯结构的抗爆性能进行了多目标优化设计，使铝蜂窝夹芯结构的抗爆炸冲击波性能得到了明显改善，这对抗爆结构的工程设计有一定指导意义.

Simulation Analysis and Optimization for Blast-Resistant Performances of Aluminum Honeycomb Sandwich Structure

A finite element analysis of the blast-resistant performance of the aluminum honeycomb sandwich structure was conducted by using the CONWEP calculation model. The maximum deformation of the back plate and the specific absorption energy of the sandwich layer were used as the blast-resistant performance indexes, the benchmark model of the aluminum honeycomb sandwich structure was established according to the composite structure of different matrix materials. Based on the benchmark model, the effects of structural parameters and cell types on the blast-resistant performance of aluminum honeycomb sandwich structure were quantitatively studied. The results show that the composite structure with Al2024T351 for the front plate and RHA for the back plate has excellent blast-resistant performance; compared with the thickness change of the back plate, the influence of thickness change of the front plate on the blast-resistant performance index is more significant. The multi-objective optimization design of the blast-resistant performance of the aluminum honeycomb sandwich structure was done by using the method of building a surrogate model, and the blast-resistant performance of the aluminum honeycomb sandwich structure was obviously improved, which has certain guiding significance for the engineering design of the blast-resistant structure.