期刊
STRUCTURAL AND MULTIDISCIPLINARY OPTIMIZATION
卷 64, 期 4, 页码 1801-1824出版社
SPRINGER
DOI: 10.1007/s00158-021-02943-x
关键词
Topology optimization; Damping material; Lattice core; Resonance response
资金
- Key Project of NSFC [51790171, 51761145111, 51735005]
This paper presents a concurrent optimization scheme to suppress structural resonance response by simultaneously optimizing the damping material topology in the viscoelastic layers and the size distribution of the lattice core in sandwich structures. The damping effect is simulated as a hysteretic damping model and full method is used to accurately calculate dynamic responses. Design sensitivities are efficiently derived based on the adjoint method and the Globally Convergent Method of Moving Asymptotes algorithm is adopted.
This paper studies the optimization design of sandwich structures with lattice core and viscoelastic layers for suppressing structural resonance response in the frequency domain. A concurrent optimization scheme is proposed to simultaneously optimize the damping material topology in the viscoelastic layers and the size distribution of the lattice core. The damping effect of the viscoelastic layers is simulated as hysteretic damping model, and the full method is used to accurately calculate the dynamic responses. Based on the adjoint method, the corresponding design sensitivities are analytically derived efficiently and the Globally Convergent Method of Moving Asymptotes algorithm is adopted. To ensure a smooth convergence in case of mode switching, the mode tracking technique based on the Modal Assurance Criteria is introduced to track the targeted resonant mode. Numerical examples demonstrate the effect of the concurrent optimization in suppressing structural resonance response.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据