阻尼夹芯复合材料加筋板的振动分析与数值模拟

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Abstract Based on the first-order shear deformation theory (FSDT), expressions of strain energy and kinetic energy of a stiffened plate with damping core composite and stiffeners were derived, and its governing dynamic differential equations were established using Hamilton principle.According to the relevant boundary conditions, the equations were solved using Fourier series.The finite element model for this damping core composite stiffened plate was established using the software ANSYS considering combination mode of damping material and fiber prepreg in this plate.Dynamic characteristics of the plate were studied with the finite element numerical simulation method of modal strain energy.Through comparing the numerical simulation results with the theoretical solutions, the rationality and effectiveness of the finite element model were verified.Effects of different rib sizes, number of ribs and distribution of ribs on dynamic characteristics of this plate were discussed to obtain variation laws of its first-order modal frequency and loss factor versus varying curves of different parameters.The study results provided a reference for optimization design of stiffened plates with damping core composite.

Key words： damping core composite stiffened plate dynamic characteristics ANSYS finite element numerical simulation loss factor

Received: 21 August 2018 Published: 28 February 2020

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	Articles by authors
	LU Qinghe
	LIANG Sen
	ZHOU Yunfa
	ZHENG Changsheng

Cite this article:

LU Qinghe,LIANG Sen,ZHOU Yunfa, et al. Vibration characteristics analysis and numerical simulation for stiffened plates with damping core composite[J]. JOURNAL OF VIBRATION AND SHOCK, 2020, 39(5): 250-261.

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http://jvs.sjtu.edu.cn/EN/ OR http://jvs.sjtu.edu.cn/EN/Y2020/V39/I5/250

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