Numerical study and topology optimization of vibration isolation support structures

doi:10.1016/j.ijmecsci.2022.107507

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	Numerical study and topology optimization of vibration isolation support structures
	H. J. Zhao; Y. Feng; W. Li and C. Xue
	2022
发表期刊	International Journal of Mechanical Sciences
ISSN	0020-7403
卷号	228 页码:19
摘要	Lightweight design and harmful vibration isolation of supporting structures are the most common design con-tents in practical engineering, but they are often difficult to be considered together. Phononic crystals have the characteristics of elastic wave bandgaps, which can effectively isolate the vibration within the bandgap fre-quency range. The integrated coupling design of vibration isolation and structure support by topology optimi-zation is studied in order to make the obtained macro structure with periodic characteristics have both high support structure stiffness and lower frequency vibration isolation bandgaps. Taking a two-dimensional canti-lever beam with multiple periodic substructures in the length direction for example, the finite element method and an improved multi-objective genetic algorithm are used to realize the topology iterative change of the substructure mesh, the solution of the substructure band structure and the natural frequency of the cantilever beam. Maze algorithm is used to avoid invalid operation in optimization process and the mesh generation strategy combining coarse mesh and fine mesh is taken to improve the operation efficiency. Two optimization objective functions reflecting the overall support stiffness and relative bandgap width of the cantilever beam are set. The topology design of the substructure with transverse symmetry constraints and bisymmetric constraints are carried out, respectively. The topology optimized structures with bandgaps of different mechanisms are obtained from the Pareto front of the numerical results.
DOI	10.1016/j.ijmecsci.2022.107507
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收录类别	sci ; ei
语种	英语
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文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/66926
专题	中国科学院长春光学精密机械与物理研究所
推荐引用方式 GB/T 7714	H. J. Zhao,Y. Feng,W. Li and C. Xue. Numerical study and topology optimization of vibration isolation support structures[J]. International Journal of Mechanical Sciences,2022,228:19.
APA	H. J. Zhao,Y. Feng,&W. Li and C. Xue.(2022).Numerical study and topology optimization of vibration isolation support structures.International Journal of Mechanical Sciences,228,19.
MLA	H. J. Zhao,et al."Numerical study and topology optimization of vibration isolation support structures".International Journal of Mechanical Sciences 228(2022):19.

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