Controls on Material and Mesh for Structural Nonlinear Time-History Analysis

Author:

Chen Xiao Ming1,Duan Jin1,Qi Hu1,Li Yun Gui1

Affiliation:

1. China State Construction Technical Center

Abstract

<strong> </strong>In order to improve the solution of nonlinear time-history analysis for high-rise buildings, the concrete constitutive relation of Chinese code has been modified by using Najar damage theory, and based on the limitation of stable time increment in explicit dynamic analysis, a simplified Rayleigh damping form with tiny stiffness proportional damping is proposed to decrease the damage induced by those high frequencies, at last, the influence of mesh size on stress and damage is also discussed. The numerical results show that these principles are workable for more accurate results.

Publisher

Trans Tech Publications, Ltd.

Reference5 articles.

1. Mander, J.B., Priestly, M.J.N., Park, R., Theoretical Stress—Strain Model for Confined Concrete. Journal of Structural Engineering, ASCE,1988, 114(8): 1804~1826.

2. Code for design of concrete structures (GB50010-2010). China architecture & building press, Beijing.

3. J Najar, D Krajcinovic, J Lemaitre. Continuous damage of brittle solids. , in: D. Krajcinovic, J. Lemaitre (Eds. ), Continuum Damage Mechanics, Theory and Applications, Springer, Wien (1987), p.233.

4. ABAQUS Inc. ABAQUS User Manual, V6. 5. 5, (2006).

5. Yang Xianqiao,Fu Xueyi,Huang yongjun. Elastic-plastic time history analysis of Pingan Finance Center. The 21th national academic conference of high-rise building structure,NanJing China. 2010: 807-818.

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