Posts tagged ‘hinge’

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Abaqus / Standard中可以通过弯矩释放模拟梁单元的端部铰接。

做个简单笔记。

如下图所示,为两端固接,受均布的梁的弯矩图 和 剪力图。

将中间节点一端梁的转动自由度释放后的弯矩和剪力如下图所示。

由上图可见,释放转动自由度后,跨中的弯矩为零了。

模拟的时候注意,不要同时释放节点连接的所有单元的转动自由度,不然就会出现对角线刚度为零的错误哦。


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[书]PERFORM-3D原理与实例 – 第4章 – 塑性铰模型

[Book] PERFORM-3D Theory and Tutorials – Chapter 4 – Plastic Hinge Model


  • 章节内容简介 [ Chapter Content Abstract ]

集中塑性铰模型是梁、柱等杆系构件模拟中常用的一种模型。PERFORM-3D[1,2]中,塑性铰是一个截面组件(Component),通过将其与其他组件进行组装得到框架复合组件,用于模拟模拟梁、柱构件的非线性行为,如图 4‑1所示。

Plastic hinge model is widely used in modelling inelastic behavior of beams and columns. In PERFORM-3D, plastic hinge is a Section Component, belongs to basic components. The Frame Compound Component can be defined using plastic hinge and one or more basic components.

Plastic_Hinge_Model_In_PERFORM-3D

图 4‑1 带集中塑性铰的框架复合组件

PERFORM-3D包含两类塑性铰组件:弯矩型塑性铰(M铰)和弯矩-轴力相关型塑性铰(P-M-M铰),前者一般用来模拟截面轴力可以忽略的情况,比如梁端非线性行为,后者用来模拟截面轴力-弯矩相互作用的情况,比如柱端非线性行为。根据变形指标的不同,上述每种塑性铰又可以进一步分为转角型塑性铰(Rotation Type)和曲率型塑性铰(Curvature Type),前者用转角作为塑性铰变形的度量,后者用曲率作为塑性铰变形的度量。

PERFORM-3D includes two types of plastic hinge models: moment plastic hinge model (M hinge) and moment-axial interaction plastic hinge model (P-M-M hinge). The former is used to simulate sections of which the axial force can be neglected, such as beam sections. The latter is used to simulate the interaction behaviour between moment and axial force of section, such as the nonlinear behaviour of column section. Besides, M-hinge and P-M-M hinge are further divided into “Rotation Type” and “Curvature Type”, according to the deformation index of hinge. The former uses rotation and deformation to measure the deformation of plastic hinge while the latter uses curvature and strain to measure the deformation of plastic hinge.

  • 示例页面 [ Sample Pages ]

 

 


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  • 相关链接[ Acknowledgements ]

[01] 书《PERFORM-3D原理与实例》 汇总页面 (PERFORM-3D Theory and Tutorials Book Page ) (书籍主页)

[02] [Book][PERFORM-3D Theory and Tutorials — Table of Contents] [目录英文版]

[03] [Book][PERFORM-3D Theory and Tutorials – Foreword ] [前言英文版]

[04] [书]PERFORM-3D 原理与实例 – 第 1 章 – PERFORM-3D软件介绍 ( PERFORM-3D Theory and Tutorials – Chapter 1 :  Introduction of PERFORM-3D )

[05] [书]PERFORM-3D 原理与实例 – 第 2 章 – 入门实例:平面钢框架弹性分析 ( PERFORM-3D Theory and Tutorials – Chapter 2 : Quick Start Example : Elastic Analysis of Plane Steel Frame)

[06] [书]PERFORM-3D 原理与实例 – 第 3 章 – 钢筋与混凝土材料的单轴本构关系 ( PERFORM-3D Theory and Tutorials – Chapter 3 : Uniaxial Constitutive Model of Steel and Concrete Material )

[07] [书]PERFORM-3D 原理与实例 – 第 4 章 – 塑性铰模型 ( PERFORM-3D Theory and Tutorials – Chapter 4: Plastic Hinge Model )

[08] [书]PERFORM-3D 原理与实例 – 第 5 章 – 纤维截面模型 ( PERFORM-3D Theory and Tutorials – Chapter 5: Fiber Section Model )

[09] [书]PERFORM-3D 原理与实例 – 第 6 章 – 剪力墙模拟 ( PERFORM-3D Theory and Tutorials – Chapter 6: Shear Wall Simulation )

[10] [书]PERFORM-3D 原理与实例 – 第 7 章 – 填充墙模拟 ( PERFORM-3D Theory and Tutorials – Chapter7: Infilled Wall Simulation )

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