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| Geometrical multi-scale stiffness optimization design of composite frame structure |
| Received:October 29, 2014 Revised:January 04, 2015 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7511/jslx201601001 |
| KeyWord:composite frame structures multi-scale optimization fiber winding angle ply parameters semi-sensitivity analysis |
| Author | Institution |
| 段尊义 |
大连理工大学 工业装备结构分析国家重点实验室 工程力学系, 大连 |
| 阎军 |
大连理工大学 工业装备结构分析国家重点实验室 工程力学系, 大连 |
| 张瑞 |
大连理工大学 工业装备结构分析国家重点实验室 工程力学系, 大连 |
| 赵国忠 |
大连理工大学 工业装备结构分析国家重点实验室 工程力学系, 大连 |
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| Abstract: |
| For the urgent need of ultra-light weight and large-scale frame structures applied in aerospace structure.Based on structure and material integrated optimization concept, this paper presents the concurrent multi-scale optimization of composite frame structure from macro topology and micro fiber plies parameters by considering the designable of fiber-reinforced composite frame structure on macro and micro scale.The concurrent multi-scale composite frame structure optimization model based on the minimum structural compliance with a specified composite volume constraint was established.The macro tube's inner radius and micro fiber winding angle were introduced as the independent variables on the two geometrical scales (structural and material scales).The sensitivity information about the fiber winding angle and the tube's inner radius were also deduced.In the numerical examples, the micro fiber winding angle optimization, macro topology optimization and concurrent two-scale optimization results are separately studied and compared.Numerical examples show that the concurrent optimization of composite frame structure can further explore the potential of composite structure and material to achieve structural light weight.The novel two scale optimization model provides new choice for the design of the composite frame structures in aerospace and other industries. |