abaqus建模规范化方法总结modified新.pdf

一.命名规则 学习建模过程，可以使用示例中的命名规则，设计标准模型参见标准模型创 建方法 二.确定构件使用的坐标系 构件坐标系是应该首先确定并记录的信息，以方便后续确定参考点坐标。 本例中坐标轴Z 轴沿模型截面中心向上，X 轴为荷载施加方向，荷载沿X 轴 正向施加。Y 轴与模型侧面垂直。如图所示。 三.材料定义 1 混凝土材料的定义 相关文献：:2180/v6.13/books/usi/default.htm :2180/v6.13/books/usb/default.htm?startat=pt05ch23s06abm39 .html#usb-mat-cconcretedamaged :2180/v6.13/books/usi/default.htm?startat=pt03ch12s09s02.ht ml :2180/texis/search/?query=concrete+damage+plasticitysubmit .x=48submit.y=6group=bkCDB=v6.13 1.1. 密度/Density Mass Density=2.5e-9 tone/ mm³ （=2500kg/m³） 1.2. 弹性/Elastic Machanical/Elasticity/Elastic 定义参数： 杨氏模量： Young’s Modulus=34500 N/mm²； 泊松比： Poisson’s Ratio=0.2 1.3. 塑性/Concrete Damage Plasticity Mechanical/Plasticity/Concrete Damage Plasticity Abaqus/CAE User’s Guide 12.9.2_Defining concrete damage plasticity ************************************************************** Dilation Angle Dilation angle, , in the p –q plane. Enter the value in degrees. Eccentricity Flow potential eccentricity, . The eccentricity is a small positive number that defines the rate at which the hyperbolic flow potential approaches its asymptote. The default is . fb0/fc0 , the ratio of initial equibiaxial compressive yield stress to initial uniaxial compressive yield stress. The default value is K , the ratio of the second stress invariant on the tensile meridian, , to that on the compressive meridian, , at initial yield for any given value of the pressure invariant p such that the maximum principal stress is negative, . It must satisfy the condition . The default value is . Viscosity Parameter Viscosity parameter, , used for the visco-plastic regularization of the concrete constitutive equations in