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.
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.
出处
《力学与实践》
CSCD
北大核心
2011年第1期35-38,共4页
Mechanics in Engineering
关键词
等效单元
梁
损伤
区间
equivalent element
beam
damage
interval
