[笔记][非线性][OpenSees] 多个单轴二折线非线性本构并联后的滞回曲线是什么样子的?

实干、实践、积累、思考、创新。


两个单轴二折线随动强化本构并联叠加后滞回曲线是什么样子的呢?在讨论别的问题的时候突然遇到。一开始以为组合后还是二折线,后面仔细想想发现不对。那还是动手测试吧,看看多个单轴二折线随动强化本构并联叠加后滞回曲线是什么样子?

首先用 OSMatTest [Tool][软件] OSMatTest: OpenSees Material Test [OpenSees单轴材料测试工具] )生成几个二折线滞回,如下图所示。

2个二折线本构并联:

3个二折线本构并联:

4个二折线本构并联:

由上面的结果可见:大概率上,多个二折线并联后的滞回曲线不再是二折线,除非并联的各个本构的屈服位移相同;其中2个二折线本构并联后成为3折线,3个二折线本构并联后成为4折线,4个二折线本构并联后成5折线。

  • 材料测试相关博文( Related Topics about Material Test)

[01] [科研][软件][OpenSees] OSBWTest: OpenSees BoucWen Material Test ( OpenSees BoucWen材料测试)

[02] [研究][软件] BWTest: Bouc-Wen模型参数测试分析 [Bouc-Wen Hysteretic Model Parameters Analysis]

[03] [笔记][非线性][OpenSees] 多个单轴二折线非线性本构并联后的滞回曲线是什么样子的?

[04] [程序][科研][本构] BMMF: Bilinear Material Model Fitting Tool [BMMF:二折线试验滞回曲线本构拟合工具]

[05] [下载][Tool][软件] OSMatTest: OpenSees Material Test [OpenSees单轴材料测试工具]

[06] OpenSees Concrete06 Material Test

[07] OpenSees ConcreteD Material Test

[08] OpenSees Concrete04 Material Test

[09] OpenSees Concrete02 Material Test

[10] OpenSees Concrete01 Material Test

[11] OpenSees RambergOsgoodSteel Material Test

[12] OpenSees Steel02 Material Test

[13] OpenSees Steel01 Material Test

[14] [OpenSees][科研] Pinching4 MatTest: Pinching4 Material Test and Paramete Correction [Pinching4材料参数测试及矫正拟合工具]

[15] [科研][OpenSees] BWBN Material (Pinching Hysteretic Bouc-Wen Material) Test

[16] [笔记][编程][算法] 四段式单轴恢复力本构模型开发


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