›› 2012, Vol. 33 ›› Issue (4): 1268-1274.

• Numerical Analysis • Previous Articles     Next Articles

Development and application of Ramberg-Osgood soil dynamic nonlinear constitutive model on ABAQUS code

HU Qin，QI Cheng-zhi   

  1. Beijing Research Center for Engineering Structures and New Materials Engineering, School of Civil and Communication Engineering, Beijing University of Civil Engineering and Architecture, Beijing 100044, China
  • Received:2010-10-18 Online:2012-04-13 Published:2012-04-26

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Abstract: Based on the ABAQUS finite element code, the soil dynamic nonlinear constitutive model of Ramberg- Osgood has been modified. Based on the appropriate assumptions, the procedure and the algorithm for evaluation of the model’s parameters R and ? are derived. Loading and unloading rules of the hysteresis correspond to the revised Masing criterion. Three-dimensional nonlinear ground seismic analysis has been performed, the influence of seismic waves with different input peak value on soil stress-strain relationship has been analyzed, and the results have been compared with that of the one-dimensional soil dynamic analysis on Shaking code. The results show that the horizontal displacement and relative displacement obtained by the nonlinear analysis are greater than that obtained by equivalent linearization method, which indicates that the selection of constitutive model will affect the obtained results of ground seismic response; thus it is necessary to select the appropriate model in engineering application and make reasonable judgments for the final result.

Key words: soil dynamic nonlinearity, Ramberg-Osgood model, ground seismic, Masing criterion, ABAQUS code

CLC Number: 

  • TU 435
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