Theoretic Life Solutions of Cylindrical Sample Under Shear Strain

XIAO Jianhua; WANG Jingjing

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Theoretic Life Solutions of Cylindrical Sample Under Shear Strain

XIAO Jianhua 1 * #,WANG Jingjing 2

1.Mesurement Institute, Henan Polytechnic University, Jiazuo, 454000

2.Measurement Institute, Henan Polytechnic University, Jiaozuo, 454000

*Correspondence author

#Submitted by

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Funding: none

Opened online:19 December 2013

Accepted by: none

Citation: XIAO Jianhua,WANG Jingjing.Theoretic Life Solutions of Cylindrical Sample Under Shear Strain[OL]. [19 December 2013] http://en.paper.edu.cn/en_releasepaper/content/4574815

For given boundary condition and motion equations, the theoretic solutions of displacement and stresses for simple one directional macro rheology deformation of cylindrical sample under long time loading condition are the topic for this work. The material features are defined by elastic constants and viscosity constants as a general elastic-flow material. The time-evolution solutions are obtained to answer the intrinsic features of rheology deformation under the condition that in macro scale, the deformation is one directional. These new results are used to explain the fatigue and cracking development phenomenon in typical engineering environments. The research shows that: 1) The fatigue and cracking are originated from the self-evolution of deformation as a rheology deformation; 2) The fatigue and cracking have different mechanism. The compressive cracking is similar with fatigue, while the extension cracking is not; 3) The fatigue or cracking feature of material is described by viscosity parameter. A natural life scale of material can be defined as the ratio of viscosity over elasticity. 4) The viscosity parameter measurements can be used to estimate life of material or to estimate the potential instability.

Keywords:rheology; fatigue; cracking development; self-evolution.

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