中国机械工程 ›› 2021, Vol. 32 ›› Issue (16): 1912-1920.DOI: 10.3969/j.issn.1004-132X.2021.16.003

• 机械基础工程 • 上一篇    下一篇

面向动力学性能的薄壁加筋板结构阻尼与筋条布局协同优化设计

牛斌1;闫家铭1;毛玉明2;刘海洋1   

  1. 1.大连理工大学机械工程学院,大连,116024
    2.上海宇航系统工程研究所,上海,201109
  • 出版日期:2021-08-25 发布日期:2021-09-10
  • 作者简介:牛斌,男,1981年生,教授。研究方向为材料结构功能一体化设计制造、结构拓扑优化。发表论文40余篇。E-mail:niubin@dlut.edu.cn。
  • 基金资助:
    国家自然科学基金(51975087)

Collaborative Design Optimization of Damping Layers and Stiffener Layout of Thin-walled Stiffened Plate Structures for Dynamics Performances

NIU Bin1;YAN Jiaming1;MAO Yuming2;LIU Haiyang1   

  1. 1.School of Mechanical Engineering,Dalian University of Technology,Dalian,Liaoning,116024
    2.Shanghai Institute of Aerospace Systems Engineering,Shanghai,201109
  • Online:2021-08-25 Published:2021-09-10

摘要: 为减小薄壁加筋结构在动态环境下的振动,提出了加筋肋布局和阻尼层拓扑一体化设计方法。以含表层阻尼材料的薄壁加筋板结构为研究对象,结合阻尼材料惩罚模型与基结构优化方法,引入筋条密度和阻尼单元密度两类独立设计变量,考虑筋条和阻尼材料的体积约束,建立最小化动态柔度的阻尼材料拓扑和筋条布局的协同优化模型,实现面向动态响应最小化的含阻尼层的薄壁加筋结构最优设计。通过不同阻尼、不同频率下的含表面阻尼层加筋板的多个数值算例,验证了所提方法和模型的有效性。

关键词: 拓扑优化, 加筋板, 阻尼层, 简谐激励

Abstract: In order to reduce the vibrations of thin-walled stiffened plate structures in dynamic environment, a topology optimization method was proposed for designing the layout of reinforced ribs and damping layers. The penalization model of damping material and the ground structure approach were combined in the optimization. The density of stiffened rib and element density of the damping material were introduced as the independent design variables. Two constraints on the material used in the stiffened ribs and the damping layers were considered. The collaborative design optimization of damping layers and stiffening ribs was established with dynamic compliance as the objective function. The optimized topological design of stiffeners and damping materials was realized simultaneously. Several numerical examples of stiffened plate with different damping properties and various excitation frequencies were given to verify the effectiveness of the proposed method.

Key words: topology optimization, stiffened plate, damping layer, harmonic excitation 

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