多工况载荷下驾驶舱结构刚度优化设计与仿真  

Optimization Design and Simulation of Cockpit Stiffness in Multiple Loading Conditions

作　　者：郭璐[1] 杨云[1] 王崴[1] 刘晓卫[1] 

机构地区：[1]空军工程大学防空反导学院,陕西西安710051

出　　处：《计算机仿真》2015年第10期43-47,共5页Computer Simulation

摘　　要：针对驾驶舱优化强度性能优化设计,由于驾驶舱结构布局不合理,稳定性差。为解决上述问题,提出了一种变密度拓扑优化方法来减轻舱体的质量,并提高舱体的刚度。采用ANSYS软件建立驾驶舱有限元模型,以舱体柔度最小作为优化目标,在弯曲和扭转两种工况下,分别对驾驶舱舱顶、侧围和底板部分进行拓扑优化,并对优化前、后驾驶舱的刚度及质量进行了分析。经过多种方案设计与比较,综合考虑仿真结果,得到了最优的舱骨架结构空间布局,舱体的刚度特性得到了大幅改善。最终优化结果表明,设计方法能够提高产品的刚度质量比,为驾驶舱设计和优化提供了理论依据。Since the cockpit has unreasonable layout structure and poor stability, optimizing strength property is designed for the cockpit. A variable density topological optimization method is developed to reduce the quality and increase the stiffness of the cockpit. By adopting the ANSYS software, the finite element model of the cockpit is established. Topological optimization is implemented for the roof, side and bottom plate of the cockpit, respectively. Un- der bending and torsional working conditions, the flexibility of the cockpit is minimized. After optimization, the stiff- ness and quality of the cockpit are analyzed. Through several design schemes and comparison, and considering the simulation results, the best cockpit skeleton structure space layout is obtained, and the stiffness properties of the cockpit are significantly improved. The optimized result show that this method can be used to increase the stiffness and mass ratio of the product, which can provide theoretical basis for the design and optimization of cockpit.

关 键 词：驾驶舱 多工况 刚度优化 变密度法 最优准则 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]