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Stress and strain concentrations in an elasto-plastic bar of circular cross-section with semicircular groove

机译:圆形横截面弹性塑料棒中的应力和应变浓度

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摘要

The elastic stress and strain fields in an elasto-plastic circular cross-section bar with semicircular groove subjected to uniaxial tension are systematically investigated using the finite element method. It is found that the stress and strain concentrations are different, especially after the partial region near the groove root yielding. The coupled influences of the loading levels and Poisson's ratios on the stress and strain concentrations are examined. The maximum of strain concentration factor is always at the groove root, but the maximum of stress concentration factor is at the groove root only while the loading levels are lower.
机译:利用有限元法系统研究了弹性塑料圆形横截面中弹塑性圆形横截面杆中的弹性应力和应变场,具有经受单轴张力的半圆形槽。发现应力和应变浓度不同,尤其是在沟槽根部附近的部分区域之后。检查了加载水平和泊松比对应力和应变浓度的耦合影响。应变浓度因子的最大值始终处于凹槽根,但是应应力浓度因子的最大值仅在凹槽根部,而负载水平较低。

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