【摘要】 为了利用由光塑性法得到的应力光图来分离应力，提出一个以边界节点上应力分 量σｙ和域内节点主应力差（σ１－σ２）．第一主应力方向角θ为原始数据的结构分 析光塑性成力计算的混合法，给出了基本微分方程和相应的差分方程。由本方法计算 得到的结果是令人满意的。更多还原

【Abstract】 In order to separate the stresses by means of the stress-optic patterns obtained from photoplasticity,a hybrid method by photoplasticity and numerical calculation and its basic differential-difference equation in structural elasto- plastic stress analysis are presented. The basic data of this hybrid method are the stress component σy on the model boundary, the principal stress difference (σ1-σ2,) and the angle θ of the first principal stress in the model, al1 of which can be obtained from photoplasticity fringe patterns. It can be seen from the calculation that the numerical results are satisfactory.更多还原