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A cyclic two-surface thermoplastic damage model with application to metallic plate dampers

机译：循环两面热塑性损伤模型及其在金属板阻尼器上的应用

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摘要

The objective of this study is to develop a new constitutive model for cyclic response of metals with much broader applicability. Accordingly, a two-surface damage thermoplasticity model is proposed to understand inelastic behavior and to evaluate a potential damaged state of the metals. This model, which derived from small strain theory, is formulated through a thermodynamic approach to damage mechanics based on entropy production. A simple shear problem was utilized to examine several effects of this model, such as fatigue by cyclic loading and temperature, and to allow for the thermal effects on metals. Following this, the proposed cyclic damage model is implemented as a user subroutine in the finite element software ABAQUS. Finally, numerical results of energy dissipation devices are compared with experimental data for validity of this model.
机译：这项研究的目的是为金属的循环响应建立一种新的本构模型，具有更广泛的适用性。因此，提出了一种两面损伤热塑性模型，以了解其非弹性行为并评估金属的潜在损伤状态。该模型是从小应变理论衍生而来的，它是通过热力学方法基于熵产生的损伤力学来建立的。一个简单的剪切问题被用来检验该模型的几种效应，例如循环载荷和温度引起的疲劳，并考虑到对金属的热效应。此后，在有限元软件ABAQUS中将建议的循环损伤模型实现为用户子例程。最后，将能量耗散装置的数值结果与实验数据进行比较，以验证该模型的有效性。

著录项

  • 来源
    《Engineering Structures》 |2013年第7期|608-620|共13页
  • 作者

    Dongkeon Kim; Gary F. Dargush; Cemal Basaran;

  • 作者单位

    Central Research Institute, Korea Hydro & Nuclear Power, 70, 1312 Beon-gil, Yuseong-daero, Yuseong-gu, Daejeon 305-343, Republic of Korea;

    Department of Mechanical and Aerospace Engineering, University at Buffalo, The State University of New York, Buffalo, NY 14260, USA;

    Department of Civil, Structural and Environmental Engineering, University at Buffalo, The State University of New York, Buffalo, NY 14260, USA;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Two-surface model; Thermoplasticity; Damage; Entropy production; Constitutive model;

    机译：两面模型;热塑性损伤;熵产生;本构模型;

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