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Numerical Analysis of Spiral Notch-holes Loosen Blasting
作者姓名:ZHENG Zhou-lian  CHEN Shan-lin
作者单位:College of Civil Engineering, Chongqing University, Chongqing 400030, China
摘    要:ANSYS program is applied to the numerical analysis on the space flexibility and elastoplasticity of a spiral(V-notch),which suggests that: 1)The stress distribution is uneven inside the spiral V-notch as tensile stress is focused near the tip of the notch.2)Tensile stress and compressive stress areas are located alternatively inside the whole notch,the stress changes slower at a point farther from a crack tip,and much faster at a nearer point.3)Elastoplasticity study finds that there exists at the tip of the crack a plastic zone that expand and extend to the direction of the tip with increase load so that cracks initiate at the tip of the notch and extend in the direction of the tip.

关 键 词:spiral  V-notch    loosen  blasting    numerical  calculation
收稿时间:2005/7/28 0:00:00
修稿时间:2005/7/28 0:00:00

Numerical Analysis of Spiral Notch-holes Loosen Blasting
ZHENG Zhou-lian,CHEN Shan-lin.Numerical Analysis of Spiral Notch-holes Loosen Blasting[J].Storage & Process,2005(12):125-129.
Authors:ZHENG Zhou-lian  CHEN Shan-lin
Institution:College of Civil Engineering, Chongqing University, Chongqing 400030, China
Abstract:ANSYS program is applied to the numerical analysis on the space flexibility and elastoplasticity of a spiral(V-notch),which suggests that: 1)The stress distribution is uneven inside the spiral V-notch as tensile stress is focused near the tip of the notch.2)Tensile stress and compressive stress areas are located alternatively inside the whole notch,the stress changes slower at a point farther from a crack tip,and much faster at a nearer point.3)Elastoplasticity study finds that there exists at the tip of the crack a plastic zone that expand and extend to the direction of the tip with increase load so that cracks initiate at the tip of the notch and extend in the direction of the tip.
Keywords:spiral V-notch  loosen blasting  numerical calculation
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