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使用本构模型来模拟路面面层材料的本构关系,同时将行车荷载的作用形式视为半正弦波谱形式,通过大型通用有限元的二次开发功能,开发出在任意荷位进行循环加载的有限元子程序,分析了加载速率和荷载间歇时间对疲劳裂纹扩展的影响。
Using the constitutive model to simulate the constitutive relation of pavement surface material, the form of driving load is considered as a half-sine spectrum form. Through the secondary development of large general-purpose finite element, a cyclic load Finite element subroutine, the influence of loading rate and load intermittent time on fatigue crack propagation was analyzed.