Transactions of the Korean Society of Mechanical Engineers (대한기계학회논문집)
- Volume 7 Issue 3
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- Pages.270-277
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- 1983
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- 1225-5963(pISSN)
DOI QR Code
Finite Element Analysis on the Small Scale Yielding of a Crack Tip in Plane Stress
平面應力狀態 에서 균열先端 의 小規模降伏 에 관한 有限要素解析
Abstract
Plastic plane stress solutions are given for a center cracked strip, characterized by the Ramberg-Osgood plastic index, under bi-axial tension. Using a power law hardening stress-strain relation, an incremental plasticity finite element formulation is developed, and simple formulation is given for computing J-integral with nodal displacements. The near tip angular distribution of von Mises effective stress doesn't differ significantly in magnitude according to the change of loading stress and bi-axial load combination factor. But, for smaller plastic index, the location of its maximum value moves vertically at a head of crack. J-integral value, in the plastic zone near crack tip, decreases with load combination factor for large and small plastic index.
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