力学与实践 ›› 2011, Vol. 33 ›› Issue (1): 35-38.DOI: 10.6052/1000-0879-lxysj2010-420

• 应用研究 • 上一篇    下一篇

基于等效单元概念的梁结构损伤定位方法

马中军1,司马玉洲2   

  1. 1. 南阳理工学院土木系
    2. 华中科技大学,土木工程与力学学院
  • 收稿日期:2010-10-20 修回日期:2010-11-15 出版日期:2011-02-15 发布日期:2011-03-03
  • 通讯作者: 马中军

DAMAGE LOCALIZATION FOR BEAM STRUCTURES BASED ON EQUIVALENT ELEMENT CONCEPT

2   

  • Received:2010-10-20 Revised:2010-11-15 Online:2011-02-15 Published:2011-03-03

摘要: 研究目的是为梁结构提供一种基于等效单元概念的新损伤定位方法. 区分刚度损伤和质量损伤两种情况, 分别对连续梁和简支梁给出了具体的损伤定位方法. 利 用的具体指标是支座反力和跨中位移. 文中的新方法都可以得到以小区间表示的损伤位置结 果, 有效性得到了数值模拟算例和模型实验的验证.

关键词: 等效单元;梁;损伤;识别;区间

Abstract: This paper discusses how to locate damage in beam structures. Damage is related with changes of local stiffness or local mass. Based on the equivalent element concept, this paper proposes new methods of damage localization for continuous beam and simply supported beams, respectively, by using support reaction and mid-span displacement as damage indicators. The damage location results are expressed in small regions intervals. The feasibility and effectiveness of the methods are demonstrated by numerical simulations and model experiments.

Key words: equivalent element