Preliminary Study on the Deformation of Yuxi Basin under Gravity Action by Nonlinear Finite Element Simulation

Abstract:

Abstract. A secondary development of the ADINA software for Duncan-Chang E-B nonlinear elastic constitutive model was conducted in this paper, and the veracity of calculation results was verified. To contrast linear constitutive model and Duncan-Chang nonlinear constitutive model, the deformation of YuXi basin profile model under gravity action was calculated by both of the constitutive models. The results show that the subsidence in the linear results is about 12% larger than the nonlinear results, and the nonlinear model has advantages in parameter choosing. Meanwhile, a modified model of YuXi basin which depends on the latest data from our recent work in YuXi area was built to compare with the original model, the calculation results show that the changes in the basin basement structure and basin depth have great influence on the distribution and maximums of the deformation results, when the changes in the internal structure and sequence influence relatively little.

• Periodical: Applied Mechanics and Materials (Volumes 170-173)
• Pages: 1097-1106
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.170-173.1097
• Online since: May 2012
• Authors: Tie Fei Li*, Xue Liang Chen, Meng Tan Gao
• Keywords: ADINA, Duncan-Chang E-B Model, Nonlinear, Yuxi Basin

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