含分层复合材料层合板的接触阻尼特性

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摘要阻尼响应是用于识别分层损伤的高敏感动态参数。分层板的阻尼包括材料阻尼和接触阻尼两部分：基于应变能法，计算了复合材料材料阻尼；基于静-动摩擦一体化能量损耗模型，计算了一阶模态下分层界面接触阻尼；采用有限元软件Abaqus建立了分层板有限元模型（FEMs），借助罚刚度法引入界面法向接触刚度，同时运用等效黏性阻尼引入接触阻尼参数，分析了分层层合板动态响应；采用自由衰减试验测量了不同分层尺寸和厚度方向位置板件的动态参数。结果表明，分层比例越大，层合板的一阶模态阻尼上升越多，其中接触阻尼起主要作用。试验结果与有限元结果吻合较好，验证了有限元模型的合理性和准确性。

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	何意1
	肖毅1
	苏众庆2

关键词 ：复合材料层合板, 分层损伤, 有限元分析, 接触阻尼, 罚刚度法

Abstract：Damping performance is a high-sensitivity dynamic parameter that can be utilized to identify delamination.The damping of the delaminated composite plates contains material damping and contact damping, material damping was calculated based on the strain energy method, and contact damping was analyzed by a static-slip-integrated friction energy-dissipated model.The finite element models (FEMs) were developed by using the Abaqus software to simulate the dynamic responses of delaminated composite plates, in which, the normal contact stiffness and contact damping were introduced via the penalty stiffness method and equivalent viscous damping, respectively.The free decay test was set up to measure the dynamic parameters of the plates with different delamination sizes and locations in thickness direction.The results show that the higher the delamination ratio is, the more the first-order modal damping of the laminate rises, and the contact damping plays a major role in the rising.The experimental results are in good agreement with the FEMs' results, which verifies the rationality and accuracy of the FEMs.

Key words： laminated composites delamination finite element analysis contact damping penalty stiffness method

收稿日期: 2018-06-21 出版日期: 2019-12-15

引用本文:

何意1，肖毅1，苏众庆2. 含分层复合材料层合板的接触阻尼特性[J]. 振动与冲击, 2019, 38(24): 8-17.
HE Yi1,XIAO Yi1,SU Zhongqing2. Contact damping characteristics of delaminated composite plates. JOURNAL OF VIBRATION AND SHOCK, 2019, 38(24): 8-17.

链接本文:

http://jvs.sjtu.edu.cn/CN/ 或 http://jvs.sjtu.edu.cn/CN/Y2019/V38/I24/8

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