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为解决驾驶舱设计过于保守、质量太大的问题,提出一种变密度拓扑优化方法以减轻舱体的质量。基于ANSYS软件建立驾驶舱有限元模型,应用APDL(ANSYS parametric design language)编制拓扑优化程序,以舱体质量最小作为优化目标,在弯曲和扭转两种工况下,分别对驾驶舱顶盖、侧围和底板部分进行拓扑优化,对优化前、后驾驶舱的刚度及质量进行对比与分析。经过多种方案设计与比较,得到最优的舱骨架结构空间布局,在保证驾驶舱弯曲刚度和扭转刚度的前提下,使舱体质量最轻。最终优化结果表明,该设计方法能够提高产品的刚度质量比,用于工程实际可为驾驶舱的设计提供指导。
In order to solve the problem of over conservative and high quality cockpit design, a variable density topology optimization method is proposed to reduce the cabin quality. The cockpit finite element model was established based on ANSYS software. APDL (ANSYS parametric design language) was used to build the topology optimization program. Taking the minimum mass of the cabin as the optimization target, under the bending and twisting conditions, the cockpit roof, side Top and bottom panel topology optimization, before and after the optimization of the cockpit stiffness and quality comparison and analysis. After a variety of schemes are designed and compared, the optimal space structure layout of the tank structure is obtained. Under the premise of ensuring the bending stiffness and torsional stiffness of the cockpit, the cabin quality is the lightest. The final optimization results show that the design method can improve the stiffness and mass ratio of the product, which can be used to guide the design of the cockpit.