[Tool] OpenSees Material Test

[App]OpenSees Material Test.A small program to test the uniaxial materials in OpenSees.OpenSees Material Test将OpenSees ( Open System for Earthquake Engineering Simulation )中常用的单轴本构关系(钢及混凝土本构)提取出来,通过自行设计的界面进行测试,为今后更加深入的研究奠定基础。

OpenSees Concrete04 Material Test

Concrete04受压部分的包络线采用Popovics (1973) 提出的单调荷载下的应力—应变关系,并根据Karsan-Jirsa加卸载准则确定其加卸载刚度(线性);受拉部分的包络线由线性上升段和指数下降段组成,其加卸载与再加载刚度取其与原点的割线刚度。(Concrete is a uniaxial Popovics concrete material object with degraded linear unloading/reloading stiffness according to the work of Karsan-Jirsa and tensile strength with exponential decay.)

OpenSees Concrete02 Material Test

OpenSees Concrete02 Material Test.Concrete02与Concrete01相比,考虑了混凝土的受拉力学性能(线性)。在受压方面,与Concrete01相同的是,考虑了混凝土随着残余应变的增大,加、卸载的刚度发生退化;不同的是,Concrete02在同一卸载过程,卸载的刚度也在发生退化。

OpenSees Steel01 Material Test

OpenSees Steel01 Material Test. Steel01是OpenSees中最简单的单轴钢筋材料,骨架曲线为二折线,默认为随动强化,可以考虑分别考虑拉压方向的各向同性强化。(Steel01 a uniaxial bilinear steel material object with kinematic hardening and optional isotropic hardening described by a non-linear evolution equation. )