Optimization of vibration characteristics and directional propagation of plane waves in branching ligament structures of wind models

• DOI: 10.1016/j.rinp.2023.106345
• Publication Date: 2023-03-07T20:53:45Z
• Authors: Xiao-feng Li; Shu-liang Cheng; Hong-yun Yang; Qun Yan; Bin Wang; Yong-tao Sun; Qian Ding; Hao Yan; Hong-ge Han; Qing-xin Zhao; Ya-jun Xin
• Keywords: Frequency band

To achieve multi-frequency vibration suppression and wave propagation modulation, eight branching ligament structures for wind models are proposed. Using lattice theory, dynamical model finite element release method, the verified to have bandgaps. By attaching a solid disc at center of model, bandgap coverage structure is improved frequency reduced. The modal analysis shows that branch ligaments border has effect on elastic waves. phase constant surface, velocity direction plots specific frequencies calculated verify directional regional nature propagation. And good correspondence group simulation results frequencies. Finally, range compared with transfer function, two agree well. stress cloud diagram also optimized an excellent capability. innovatively designed combined advantages light weight, ease fabrication, wide low control, while integrated in-plane provides theoretical basis structural optimization.