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Journal of Zhejiang University SCIENCE A 2007 Vol.8 No.9 P.1380~1387

http://doi.org/10.1631/jzus.2007.A1380


Expansion of spherical cavity of strain-softening materials with different elastic moduli of tension and compression


Author(s):  LUO Zhan-you, ZHU Xiang-rong, GONG Xiao-nan

Affiliation(s):  Ningbo Institute of Technology, Zhejiang University, Ningbo 315100, China; more

Corresponding email(s):   lzy0395@163.com

Key Words:  Expansion of spherical cavity, Tresca material, Mohr-Coulomb material, Elastic theory with different moduli of tension and compression, Stress-dropping softening model


LUO Zhan-you, ZHU Xiang-rong, GONG Xiao-nan. Expansion of spherical cavity of strain-softening materials with different elastic moduli of tension and compression[J]. Journal of Zhejiang University Science A, 2007, 8(9): 1380~1387.

@article{title="Expansion of spherical cavity of strain-softening materials with different elastic moduli of tension and compression",
author="LUO Zhan-you, ZHU Xiang-rong, GONG Xiao-nan",
journal="Journal of Zhejiang University Science A",
volume="8",
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pages="1380~1387",
year="2007",
publisher="Zhejiang University Press & Springer",
doi="10.1631/jzus.2007.A1380"
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%T Expansion of spherical cavity of strain-softening materials with different elastic moduli of tension and compression
%A LUO Zhan-you
%A ZHU Xiang-rong
%A GONG Xiao-nan
%J Journal of Zhejiang University SCIENCE A
%V 8
%N 9
%P 1380~1387
%@ 1673-565X
%D 2007
%I Zhejiang University Press & Springer
%DOI 10.1631/jzus.2007.A1380

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T1 - Expansion of spherical cavity of strain-softening materials with different elastic moduli of tension and compression
A1 - LUO Zhan-you
A1 - ZHU Xiang-rong
A1 - GONG Xiao-nan
J0 - Journal of Zhejiang University Science A
VL - 8
IS - 9
SP - 1380
EP - 1387
%@ 1673-565X
Y1 - 2007
PB - Zhejiang University Press & Springer
ER -
DOI - 10.1631/jzus.2007.A1380


Abstract: 
An expansion theory of spherical cavities in strain-softening materials with different moduli of tension and compression was presented. For geomaterials, two controlling parameters were introduced to take into account the different moduli and strain-softening properties. By means of elastic theory with different moduli and stress-softening models, general solutions calculating Tresca and mohr-Coulomb materials’ stress and displacement fields of expansion of spherical cavity were derived. The effects caused by different elastic moduli in tensile and compression and strain-softening rates on stress and displacement fields and development of plastic zone of expansion of cavity were analyzed. The results show that the ultimate expansion pressure, stress and displacement fields and development of plastic zone vary with the different elastic moduli and strain-softening properties. If classical elastic theory is adopted and strain-softening properties are neglected, rather large errors may be the result.

Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article

Reference

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