Secondary development of CM elastoplastic constitutive model based on FLAC3D
Overconsolidation and structural properties are two typical mechanical properties of natural soil,while the explicit finite difference program FLAC3D lacks a unified constitutive model to describe these two characteristics due to its lack of diverse constitutive libraries.In order to expand the application scope of FLAC3D and more accurately simulate the mechanical properties of soil,the cyclic mobility elastic-plastic constitutive model was developed in C++based on the built-in secondary development platform.Firstly,the basic formula of the model was derived,and secondly,the working principle and key development steps of FLAC3D were introduced.Subsequently,such development was verified by comparing the theoretical values of FLAC3D and the constitutive equation through tests under different stress paths.Finally,by simulating one-dimensional consolidation test data,triaxial drained compression test data,and undrained triaxial cyclic loading test data,it was verified that the secondary development model can effectively simulate the mechanical behavior of soil.
overconsolidationstructuralFLAC3Delastoplastic constitutive model
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