Analytical modeling and damping optimization for a thin plate partially covered with hard coating

作者：Sun, Wei^*; Liu, Rong; Fan, Yunfei

来源：Archive of Applied Mechanics, 2018, 88(6): 897-912.

DOI：10.1007/s00419-018-1348-z

• Structure partially covered with hard coating
• Thin plate
• Analytical modeling
• Coating position
• Optimization

Finding the best coating location with the fixed shape of the hard coating is an urgent need for the engineering application of the hard-coating damping. In this paper, a study on optimal placement of hard-coating damping treatment for vibration reduction in the cantilever plate was presented. Based on the energy method and the assumed mode method, the analytical model was derived for free vibration analysis of the thin plate partially covered with hard coating, and the modal loss factors of the coating structure were determined by the modified modal strain energy method. The damping optimization model of the hard-coating thin plate was described with the maximum modal loss factor of single order or multi-orders as the objective function and the coating position as the design variable. Moreover, a method named multiple population genetic algorithms was proposed to search for the optimal coating position. Finally, a cantilever titanium plate with a single side partially deposited with NiCrAlCoY+YSZ hard coating was taken as an example to carry out a case study. The correctness of the analytical results was verified by ANSYS software and experiment, and the rationality of the damping optimization results for the hard-coating plate was also verified by experiment.

• 出版日期2018-6
• 单位东北大学