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Start Over Author "Liu Zhanli" Journal science china physics, mechanics & astronomy
9 results on '"Liu Zhanli"'

8. On the material constants measurement method of a fluid-saturated transversely isotropic poroelastic medium

Author

Gao, Yue, Liu, ZhanLi, Zhuang, Zhuo, and Hwang, Keh-Chih

Abstract

The fluid-saturated transversely isotropic poroelastic medium could be widely found in nature, e.g., the sedimentary rocks underground. To determine the eight independent material constants for the transversely isotropic poroelastic medium, a series of tests are discussed. Two undrained tests and one drained test are suggested as a set of tests of the least amount. For the verification purpose, two additional drained tests are also introduced as an option. The atmospheric dried test is discussed as a replacement of the traditional infiltrated drained test to save the time waiting for an equilibrium state. Some microscopic material constants, i.e., the unjacketed bulk coefficients, the porosity, and the compressibility of porous fluid, are measurable but unnecessary to determine the independent material constants of a poroelastic medium.

Published
2019
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9. Damage evaluation of reinforced concrete frame based on a combined fiber beam model.

Author

Shang, Bing, Liu, ZhanLi, and Zhuang, Zhuo

Abstract

In order to analyze and simulate the impact collapse or seismic response of the reinforced concrete (RC) structures, a combined fiber beam model is proposed by dividing the cross section of RC beam into concrete fiber and steel fiber. The stress-strain relationship of concrete fiber is based on a model proposed by concrete codes for concrete structures. The stress-strain behavior of steel fiber is based on a model suggested by others. These constitutive models are implemented into a general finite element program ABAQUS through the user defined subroutines to provide effective computational tools for the inelastic analysis of RC frame structures. The fiber model proposed in this paper is validated by comparing with experiment data of the RC column under cyclical lateral loading. The damage evolution of a three-dimension frame subjected to impact loading is also investigated. [ABSTRACT FROM AUTHOR]

Published
2014
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