考虑非黏性阻尼的黏弹性DDA解法

doi:10.13722/j.cnki.jrme.2016.0582

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Abstract

The non-viscous damping is introduced into the DDA method in this article for analysing the influence of non-viscous damping on discontinuous viscoelastic structure. Firstly，the non-viscous damping is introduced into the motion equations of block system，and the difficulty of solving the differential motion equations was found. Secondly，with the relationship between force and displacement and the Newmark integration algorithm，the equivalent DDA motion equations considering non-viscous damping with the symmetrical coefficient matrix was derived. Finally，with specific examples，the block displacement response under constant force or resonant excitation was analyzed，and through comparing DDA calculated value and theoretical value，the correctness of the viscoelastic DDA solution considering non-viscous damping proposed in the article was verified. Thus，the DDA solution considering non-viscous damping is a highly effective method to deal with viscoelastic problem，and it provides a new idea for analysing the discontinuous deformation of viscoelastic structure.

Key words： numerical analysis non-viscous damping viscoelasticity DDA

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	Articles by authors
	ZHAO Jian1
	XIAO Ming1
	YANG Yang2
	CHEN Juntao1
	LI Dongdong1

Cite this article:

ZHAO Jian1,XIAO Ming1,YANG Yang2, et al. Viscoelastic DDA solution considering non-viscous damping[J]. , 2017, 36(S2): 3799-3807.

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https://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2016.0582 OR https://rockmech.whrsm.ac.cn/EN/Y2017/V36/IS2/3799

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