[书]PERFORM-3D原理与实例 – 第4章 -塑性铰模型

[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.

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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