基于非对称复合材料的弯曲-扭转耦合结构设计方法研究

项目名称： 基于非对称复合材料的弯曲-扭转耦合结构设计方法研究

项目编号： No.11472003

项目类型： 面上项目

立项/批准年度： 2015

项目学科： 数理科学和化学

项目作者： 李道奎

作者单位： 中国人民解放军国防科技大学

项目金额： 90万元

中文摘要： 具有弯曲-扭转耦合效应的结构在风机叶片、机翼等结构上都有着十分广泛的应用。本项目针对传统对称复合材料弯曲-扭转耦合结构存在重量过大、耦合效应复杂的缺点，开展非对称复合材料弯曲-扭转耦合结构的设计方法研究。提出基于两种具有单一耦合效应的非对称复合材料的弯曲-扭转耦合结构设计方法；建立拉伸-扭转耦合无湿热翘曲/拉伸-剪切耦合无湿热剪切非对称复合材料的解析充要条件；提出一种解决弯-扭耦合结构强约束多目标优化问题的有效策略；分析非对称复合材料的稳定性，并对耦合效应进行试验验证。项目研究将形成非对称复合材料弯曲-扭转耦合结构设计的理论与方法体系，研究成果在风机叶片、机翼等弯曲-扭转耦合结构的设计方面具有广泛的应用前景。

中文关键词： 非对称复合材料；弯曲-扭转耦合；结构设计；多目标优化；实验验证

英文摘要： Bending-twisting coupled structures have wide uses in many kinds of structures, for example, wind turbine blade and wing of aeroplane. Focusing on the deficiencies of bending-twisting coupled structure with symmetric laminates, such as heavy weight and complex couplings, this project studies the design method for bending-twisting coupled structure using asymmetric laminates. The design method for bending-twisting coupled structure using two kinds of asymmetric laminates with single coupling is proposed. The necessary and sufficient conditions for extension-twisting coupled hygro-thermally curvature-stable (HTCS) / extension-shearing coupled hygro-thermally shear-stable (HTSS) composites are established. An effective optimization approach for highly-constrained multi-objective bending-twisting coupled structure optimization problem is proposed. The robustness of the asymmetric laminates is analyzed. The couplings of the asymmetric laminates and bending-twisting coupled structure are verified through experiment method. This project will form the theoretical and methodological systems about the design of bending-twisting coupled structure using asymmetric laminates. The research achievements have broad application prospect in the structural design of wind turbine blade and wing of aeroplane.

英文关键词： Asymmetric Composite;Bending-twisting Coupling;Structural Design;Multi-objective Optimization