Aeroelastic topology optimization of membrane structures for micro air vehicles

被引:0
作者
Bret Stanford
Peter Ifju
机构
[1] University of Florida,Department of Mechanical and Aerospace Engineering
来源
Structural and Multidisciplinary Optimization | 2009年 / 38卷
关键词
Micro air vehicle; Topology optimization; Aeroelastic membrane wing;
D O I
暂无
中图分类号
学科分类号
摘要
This work considers the aeroelastic optimization of a membrane micro air vehicle wing through topology optimization. The low aspect ratio wing is discretized into panels: a two material formulation on the wetted surface is used, where each panel can be membrane (wing skin) or carbon fiber (laminate reinforcement). An analytical sensitivity analysis of the aeroelastic system is used for the gradient-based optimization of aerodynamic objective functions. An explicit penalty is added, as needed, to force the structure to a 0–1 distribution. The dependence of the solution upon initial design, angle of attack, mesh density, and objective function are presented. Deformation and pressure distributions along the wing are studied for various load-augmenting and load-alleviating designs (both baseline and optimized), in order to establish a link between stiffness distribution and aerodynamic performance of membrane micro air vehicle wings. The work concludes with an experimental validation of the superiority of select optimal designs.
引用
收藏
页码:301 / 316
页数:15
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