塑性本构关系应变路径理论的弹塑性有限元研究

ELASTO-PLASTIC FINITE ELEMENT RESEARC ON A PLASTIC CONSTITUTIVE RELATIONSTRAIN PATH THEORY

应变路径理论与传统的增量理论不同之处在于其偏应力增量和偏应变增量之间为一非线性关系。本文推导出了该理论在空间、平面以及轴对称状态下的弹塑性矩阵。

The strain path theory is different from the plastic flow theory since it gives a nonlinear relation between stress deviation increment and strain deviation increment. The elasto-plastic matrix of the strain path theory in three and two dimensions and axial symmetry are derived in this paper.