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.)

  • 材料参数(Material Parameters

fc:混凝土28天抗压强度(concrete compressive strength at 28 days );

ec:混凝土峰值强度对应的应变,即fc对应的应变(concrete strain at maximum strength);

Ec:初始刚度(initial stiffness);

fct:混凝土抗拉强度(concrete tensile strength);

et:混凝土极限拉应变(ultimate tensile strain of concrete);

beta:应变达到etu时拉应力与峰值拉应力的比值(the exponential curve patameter to define the residual stress at etu)。

  • 测试(Test

con04-material

con04-ten

con04-comp

con04-comp-ten

  • 参考(References

[1] Concrete04

  • 程序下载 ( Program Download )

[Tool][软件] OpenSees Material Test [OpenSees单轴材料测试工具]

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  • 相关话题 ( Related Topics)

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  • 备注(Comments

感谢 林乐斌 师弟 帮忙整理文档。

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