基于广义位势理论的本构模型的数值试验验证

doi:10.13722/j.cnki.jrme.2014.s2.015

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Abstract From the mathematical principles，the generalized potential theory can be employed to create constitutive model of geomaterial directly. Compared with the conventional plasticity theory，creating constitutive model by the generalized potential theory has many advantages such as less assumptions，clearer mathematical basis，and better computational accuracy. This theory can also apply to general materials. The double surface model is a simple and practical constitutive model of the generalized potential theory. To explain its determination method and rationality，the particle flow code——PFC3D is used to make numerical tests to verify the double surface model. The verification process is as follows：first，creating an assembly of spherical particles as the sample of synthetic material，and simulating conventional triaxial tests of this sample by PFC3D；second，establishing the coefficients of the double surface model of this sample according to conventional triaxial test results；finally，predicting the behavior of this sample under triaxial tests with different stress paths by the double surface model. The analysis results prove that the double surface model has good prediction accuracy. Moreover，the determination method of the double surface model illustrated in this paper can apply to actual soils and other materials，which has certain reference value.

Key words： soil mechanics constitutive model generalized potential theory double surface model numerical test particle flow code 3D(PFC3D)

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	ZHONG Zhihui1
	2
	YANG Guanghua1
	2
	3
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	FU Xudong1
	WEN Yong1
	ZHANG Yucheng2
	3
	4

Cite this article:

ZHONG Zhihui1,2,YANG Guanghua1, et al. NUMERICAL TEST VERIFICATION OF CONSTITUTIVE MODEL BASED ON THE GENERALIZED POTENTIAL THEORY[J]. , 2014, 33(S2): 3515-3522.

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https://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2014.s2.015 OR https://rockmech.whrsm.ac.cn/EN/Y2014/V33/IS2/3515

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