摘要
提出了对大展弦比机翼进行轻量化设计的方法,以一长航时无人机机翼为例,基于原机翼建立合理的三维模型,以机翼弯曲变形为约束,最小机翼质量为设计目标,建立强长桁-弱蒙皮结构,对机翼结构中壳板单元铺层厚度和梁单元截面尺寸分别进行优化。结果表明:经过结构优化设计后机翼减重18. 52%,为无人机轻量化,提高长航时无人机航时提供有益参考。
This paper put forward to make use of advanced composite materials to high aspect ratio machine wing for light weighting design method,by the study of the structure of wing layout optimization and composite layer design.In the case of a long-endurance UAV wing,a reasonable three-dimensional model of the wing was established based on the original wing.The strong girder-weak skin structure was design for reducing wing weight.The design variables include the layer thickness of the structure plate elements and the cross-sectional area of the beam units.Finally,in this definition,wing bending deformation as constraint and reduce weight for wing design goal,the structural analysis and optimization software Optistruct were used to optimize the solution.The results show that the composite material’s wing weight is reduced by18.52%after optimization,which is a useful reference for UAV design.
作者
史继拓
王宏伟
华欣
SHI Jituo;WANG Hongwei;HUA Xin(Depatment of Air Combat Service,Aviation university of Air Force,Changchun 130000,China)
出处
《兵器装备工程学报》
CAS
北大核心
2018年第11期179-183,共5页
Journal of Ordnance Equipment Engineering
关键词
复合材料
优化设计
大展弦比
自由尺寸优化
composite material
optimization design
high aspect ratio
free size optimization
