12th World Congress of Structural and Multidisciplinary Optimization
12th World Congress of Structural and Multidisciplinary Optimization
复制标题
第十二届世界结构与多学科优化大会
DOI：
--
复制
发表时间：
2017
期刊：
影响因子：
--
通讯作者：
V. Maes
中科院分区：
文献类型：
--
作者：
T. Macquart;P. Weaver;A. Pirrera;David A J Langston;V. Maes
1.摘要由于气动热载荷与结构响应之间存在强耦合，气动热弹性力学在高超声速飞行器设计中起着至关重要的作用。流-热-结构耦合问题是高超声速飞行器设计必须解决的多学科问题之一。现有的优化算法缺乏包括这些气动热力耦合效应的能力。本文提出了一种新的双向渐进结构拓扑优化算法，包括气动热弹性耦合效应。时变温度分布是通过一个原始的配方，求解平衡的对流，辐射和通过厚度传导在每个时间步，与时间推进的非稳态传导解决方案的时间积分。热解与高阶气动解和结构有限元模型耦合。本文中给出的结果表明，热力、结构力和气动力之间的耦合驱动了设计的优化，必须考虑到这一点，以便为所需环境提供可行的工作结构。2.
1. Abstract Aerothermoelasticity plays a vital role in the design of hypersonic aircraft as a strong coupling exists between the aerothermodynamic loads and the structural response. Fluid-thermal-structural interactions are one of the multidisciplinary problems that must be solved for the design of hypersonic aircraft. Existing optimisation algorithms lack the capability to include these aerothermodynamic coupling effects. This article presents a novel bi-directional evolutionary structural topology optimisation algorithm that includes aerothermoelastic coupling effects. The timevarying temperature distribution is applied through an original formulation, solving for equilibrium of convective, radiative and through thickness conduction at each time step, with a time-marching unsteady conduction solution for time integration. The thermal solution is coupled with a high order aerodynamic solver and the structural finite element model. The results presented in this article show that the coupling between the thermal, structural and aerodynamic forces drive the optimisation of the design and must be taken into consideration to achieve a feasible working structure for the required environment. 2.