ABAQUS后处理中各应力解释(个人收集)

ABAQUS中的壳单元S33代表的是壳单元法线方向应力，S11 S22代表壳单元面内的应力。因为壳单元的使用范围是沿厚度方向应力为0”，也即沿着法相方向应力为 0，且满足几何条件才能使用壳单元，所以所有壳单元的仿真结果应力查看到的S33应力均为0。S11 S22 S33实体单元是代表X Y Z三个方向应力，但壳单元不是，另外壳单元只有S12，没有S13，S23。LE-真应变(或对数应变)LEij-真应变 应变分量；PE-塑性应变分量；PEEQ-等效塑性应变ABAQUS Field Output StressesS stress comp onents and in varia nts应力分量和变量 SVAVG volume-averaged stress comp onents and in varia nts (Euleria n only)MISESMAX 最大 Mises 应力 TSHR transverse shear stress(for thick shells)横向剪切应力 CTSHR transverse shear stress instacked continuum shells连续堆垛壳横向剪切应 力 TRIAX stress triaxiality应力三轴度 VS stress in the elastic-viscous network弹粘性网格应力 PS stress in the plastic-viscous network塑粘性网格应力SFABRIC stress compo nents in fabric con stitutive measure纤维本构应力分量SSAVG average shell sectio n stress平均壳节点应力StrainE total stra in comp onents总应变分量 VE viscous stra in in the elastic-viscous n etwork黏性应变 弹黏性网格 PE plastic stra incomp onents 塑性应变分量 PEVAVG volume-averaged plastic stra in comp onents (Euleria n only) VEEQ equivale nt viscous stra in in the elastic-viscous n etwork PEEQ equivale nt plastic stra in PEEQVAVG volume-averaged viscous strain comp onents (Euleria n only) PEEQT equivale nt plastic strain (te nsion: cast iron and con crete)等效塑性应变 PEEQMAX maximum equivale nt plastic strain 最大等效塑性应变 PEMAG plastic strain mag nitude塑性应变 PEQC equivale nt plastic strain at multiple yield surfaces多屈服面等效塑性应变 NE normal strain components垂直塑性应变 LE logarithmic strain components对数应变 SE mechanical strains and curvatures机械应变和曲率 DAMAGEC compressive damage 压缩破坏 DAMAGET t ensile damage 拉伸破坏 DAMAGEFT fiber compressive damage 纤维压缩破坏DAMAGAMT matrix ten sile damage复合拉伸破坏 DAMAGAMC matrix compressive damage复合压缩破坏DAMAGESHR shear damage剪切破坏 SDEG scalar stiffness degradatio n尺寸刚度梯度EFABRIC total strain compo nents in fabriccon stitutive measure纤维本构总应变Force/Reacti ons RF reacti on forces and mome nts反应力和力矩RT reaction forces 反应力RM reaction moments反应力矩 CF concentrated forces and moments 集中力和力矩 SF section forces and moments节点力禾口力矩 NFORC nodal forces due to element stress 结力-单元应力 RBFOR force in rebar BF body forces体力 GRAV uniformlydistributed gravity loads 统一分布重力加载 P pressure loads 压力加载 HP Hydrostatic pressure loads静水压力加载 TRSHR sheartractio n vector 剪切牵引载体 TRNOR normal compo nent of tractio n vector牵引载体垂直分量 VP viscous pressure loads黏性压力载荷 STAGP stag nation pressure loads停滞压力载荷 SBF stag natio n body forces 停滞体力1、弹塑性分析中并不一定总要考虑几何非线性。“几何非线性”的含义是位移的大小对结构的响应发生影响，例如大位移、大转动、初始应力、几何刚性化和突然翻转等。2、 等效塑性应变PEEQ与塑性应变量PEMAG这两个量的区别在于，PEMAG描述的是变形过程中某一时刻的塑性应变，与加载历史无关；而PEEQ是整个变形过程中塑性应变的累积结果。等效塑性应变PEEQ大于0表明材料发生了屈服。在工程结构中，等效塑性应变一般不应超过材料的破坏应变(failure strain )。3、在定义塑性材料时应严格按下表原则输入对应的真实应力与塑性应变：真实应力塑性应变屈服点处的真实应力0真实应力塑性应变,注意：塑性材料第一行中的塑性应变必须为 0,其含义为：在屈服点处的塑性应变为0。4、定义塑性数据时，应尽可能让其中最大的真实应力和塑性应变大于模型中可能出现的应力和应变值。5、对于塑性损伤模型，其应力应变曲线中部能有负斜率。