由试验数据拟合天然砂土的屈服面

The simulation of the yield surface of natural sand with experimental data

根据广义塑性力学原理,介绍了屈服面的物理意义,直接从三轴试验的试验数据拟合天然砂土的屈服面,给出了天然砂土的2个屈服面(剪切屈服面和体积屈服面),并结合数值算例,初步验证了双屈服面表达式的合理性.

The physical sense of the yield surface was discussed based on the principle of generalize plastic mechanics.Two yield surface,namely shear yield surface and volume yield surface,have been obtained from the triaxial tests.The retionality for yield surface was confirmed by means of computed example.