Simulation and optimization for blast-resistant performances of pyramidal lattice cored sandwich panels

被引：0
|
作者：
Qi C. [1 ]
Hao P. [1 ]
Shu J. [1 ]
Yang S. [1 ]
机构：
[1] School of Automotive Engineering, Dalian University of Technology, Dalian
来源：
Zhendong yu Chongji/Journal of Vibration and Shock | 2019年 / 38卷 / 16期
关键词：
Blast-resistant performance; Lattice material; Multi-objective optimization; Response surface model; Sandwich panel;
D O I：
10.13465/j.cnki.jvs.2019.16.035
中图分类号：
学科分类号：
摘要：
Metal lattice sandwich structures have great potential in the field of engineering protection owing to its lightweight, high strength, high specific stiffness characteristics and excellent multifunctional applications and designablity. In this work, based on the explicit finite element (FE) method, the dynamic responses of the pyramidal metallic lattice sandwich panels (PLSPs) under blast loading were simulated, and the multi-objective optimization for their blast-resistant performances was carried out. Firstly, a detailed FE model of the sandwich panel containing a solid-element model of the lattice core was established, and a simplified beam-element model was proposed. Secondly, the effectiveness and accuracy of the models were verified by referring to the experimental results in literature. By using the simplified model, the influences of key geometric parameters on the blast-resistant performances of the sandwich panels were analyzed based on the single variable method in terms of areal specific energy absorption (ASEA) and maximum back face deflection (MaxD). Then, based on radial basis function (RBF) response surface models and by using the non-dominated sorting genetic algorithm (NSGA-II), multi-objective design optimizations (MDO) were conducted to maximize ASEA and minimize MaxD with the key geometric parameters as design variables. Lastly, the reliability-based optimization of the blast-resistant performances of the sandwich panels was performed considering blast load uncertainty. The results show that using a simplified beam-element model of the lattice core greatly improves simulation efficiency and facilitates the optimization process. Key geometric parameters have great influences on the blast-resistant performances of the PLSPs. MDO and reliability-based optimization of PLSPs could improve their comprehensive blast-resistant performances and reliability. © 2019, Editorial Office of Journal of Vibration and Shock. All right reserved.
引用
收藏
页码：245 / 252
页数：7
相关论文
共 16 条
  • [1] Zhang Z., Wu H., Li X., Et al., Mechanical properties analysis and optimal design of pyramid lattice composite structures, Light Industry Machinery, 31, 1, pp. 74-79, (2013)
  • [2] Dharmasena K.P., Wadley H.N.G., Williams K., Et al., Response of metallic pyramidal lattice core sandwich panels to high intensity impulsive loading in air, International Journal of Impact Engineering, 38, 5, pp. 275-289, (2011)
  • [3] Dharmasena K.P., Queheillalt D.T., Wadley H.N.G., Et al., Dynamic compression of metallic sandwich structures during planar impulsive loading in water, European Journal of Mechanics-A/Solids, 29, 1, pp. 56-67, (2010)
  • [4] Dharmasena K.P., Wadley H.N.G., Liu T., Et al., The dynamic response of edge clamped plates loaded by spherically expanding sand shells, International Journal of Impact Engineering, 62, 24, pp. 182-195, (2013)
  • [5] Wei Z., Dharmasena K.P., Wadley H.N.G., Et al., Analysis and interpretation of a test for characterizing the response of sandwich panels to water blast, International Journal of Impact Engineering, 34, 10, pp. 1602-1618, (2007)
  • [6] Zhu L., Zhu X., Energy absorption characteristics of lattice truss structures with graded cross-section core member, Journal of Vibration and Shock, 37, 14, pp. 115-121, (2018)
  • [7] Wang T., Liu Y., Li G., Et al., Numerical simulation for anti-explosion performance of functionally graded lattice sandwich panels, Journal of Vibration and Shock, 37, 3, pp. 34-39, (2018)
  • [8] Xue Z., Hutchinson J.W., A comparative study of impulse-resistant metal sandwich plates, International Journal of Impact Engineering, 30, 10, pp. 1283-1305, (2004)
  • [9] Lee S.U., Yang D.Y., Optimal design at inner core of the shaped pyramidal truss structure, AIP Conference Proceedings, 1567, 1, pp. 1008-1011, (2013)
  • [10] Liu T., Deng Z.C., Lu T.J., Design optimization of truss-cored sandwiches with homogenization, International Journal of Solids and Structures, 43, 25-26, pp. 7891-7918, (2006)
12