二维钢筋混凝土本构子程序
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考虑不同破坏模式的二维混凝土本构模型.
A Concrete Constitutive Relationship With Various Damage Models
土木工程学报. China Civil Engineering Journal. 2003. 36(11). 70-74.
摘要：本文提出了一种可以考虑不同破坏模式的二维混凝土本构模型。该模型将混凝土按不同应力组合进行分区，按分区设定加卸载力学行为和非线性指标，可以较好地模拟混凝土在非比例加载情况下的力学行为。模型中除常见的固定裂缝模型（FCM）外，还可以选择使用转动裂缝模型（RCM），从而可以分析较复杂的混凝土开裂行为。本文还介绍了利用有限元软件MSC.MARC的二次开发功能将该模型嵌入MARC的方法。并用算例说明了本模型在解决一些复杂问题上的优势。
关键词：混凝土；本构；非线性有限元；二次开发；
Abstract: A concrete constitutive
relationship with various damage models is developed in this paper.
The failure models of concrete are divided into several zones according
to the principle stress ratio. Different loading/unloading behaviors
and nonlinear indexes are applied to various zones. So the behavior
of concrete under disproportionate loading conditions can be simulated
better. Both fixed crack model and rotating crack model can be considered
in this model for the complex fracture of concrete. This paper also
introduces the method to embed this concrete model into the FEA software
of MSC.MARC with the secondary development function of MARC. Numerical
examples are shown to illustrate the advantage of this model on some
complex problems.
Keywords: nonlinear finite element analysis; concrete; constitutive
relationship; secondary development
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HereRCFER2002程序基本资料
| 1 | Fortran 77+Fortran 90 |
| 2 | 双精度数值 |
| 3 | 总共约3500余行 |
| 4 | 9万余字符 |
| 5 | 60多个子程序 |
程序的基本要求
| 1 | 可以模拟混凝土在平面压、拉、剪等组合应力条件下的受力和变形情况 |
| 2 | 可以模拟混凝土开裂及裂面效应 |
| 3 | 可以利用MARC中的user subroutine嵌入MARC |
| 4 | 可以较好的模拟加卸载及往复加载情况下混凝土的反应 |
混凝土梁受弯问题
Stress X
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