›› 2010, Vol. 31 ›› Issue (S1): 216-219.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Experimental tests on constitutive relation of fine sand under high stress and quasi one-dimensional strain

XIONG Yi-bo，WANG Chun-min，ZHAO Kang   

  1. Northwest Institute of Nuclear Technology, Xi’an 710024, China
  • Received:2010-04-10 Online:2010-08-10 Published:2010-09-09

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Abstract:

In order to comprehend constitutive characteristics of incompact fine sand under compression stress in wide range, experimental tests were performed on a kind of fine sand with testing apparatus of quasi-one-dimensional strain with axial stress up to 1 100 MPa. The stresses related strains of fine sand with water contents of 3.4%, 6.6% and 13.5% were obtained; besides that of dried sand. Based on the test results, empirical constitutive equation is presented as a unifiable form for the fine sand with different water contents under quasi one-dimensional compression. The experimental test data are compared with the data from AUTODYN code. The constitutive parameters of fine sand are recommended, which are indispensable to calculating in DYNA code. The presented experimental test data, acquired under high stress in wide range, can be used for quantitative calculation, and the related empirical formula is applicable for engineering calculation on fine sand with different water contents.

Key words: fine sand, quasi one-dimensional strain, high stress, constitutive relation

CLC Number: 

  • TU 411
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