桥梁和轨道的联结采用非线性梁单元模拟，其材料弹性模量和屈服应力通过轨道纵向位移阻力与梁轨相对位移关系的双折线化确定；
The coupling between bridge and track adopts by beam unit, modulus of electricity of and yielding stress according to the broken line of the non-liner rail longitudinal resistance of displacement.
借助于邓肯-张非线性弹性模型对切线模量的处理方法，对M-C模型中的弹性模量进行了修正。
The elasticity modulus in Mohr-Coulomb model was modified by employing the processing method of tangential modulus in Duncan-Chang nonlinear model.
多次重复拉伸使其弹性模量降低并呈现非线性的变化趋势。
Multiple tensions lowed down the elastic modulus of the alloy and exhibited a non-linear relationship with strain.
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