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