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A degrading Bouc?Wen model for the hysteresis of reinforced concrete structural elements

机译:一种降级的BOUC?WEN模型,用于钢筋混凝土结构元件的滞后

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摘要

This paper presents a smooth hysteresis model for reinforced concrete (RC) structural elements based on the differential equation of the Bouc?Wen model. Stiffness degradation and strength degradation are defined by introducing a damage index that includes both dissipated energy and maximum displacement. The pinching effect acts directly on the stiffness of the system and is controlled by an activation energy. The degrading functions are connected to the actual processes with which the damage occurs, thereby giving each parameter a physical meaning. The simple formulation of the model allows a straightforward identification of the best-fitting parameters and an easy interpretation of the results. Applications to the cyclic behaviour of RC structural elements demonstrate that the model is well capable of describing complex hysteretic behaviours involving degradation and pinching effects.
机译:本文介绍了基于BOUC模型的微分方程的钢筋混凝土(RC)结构元素的平稳滞后模型。 通过引入包括耗散的能量和最大位移的损伤指数来限定刚度降解和强度降解。 夹紧效果直接作用于系统的刚度并由激活能量控制。 降级功能连接到发生损坏的实际过程,从而为每个参数提供物理含义。 该模型的简单配方允许直接识别最佳拟合参数和对结果的简单解释。 RC结构元件的循环行为的应用表明,该模型能够描述涉及劣化和夹持效应的复杂滞后行为。

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