噪声与振动控制2016，Vol.36Issue(3)：164-168,5.DOI:10.3969/j.issn.1006-1335.2016.03.034
基于模态应变能法的弹性薄板损伤识别
Damage Identification of Elastic Thin Plates by Modal Strain Energy Method
摘要
Abstract
A novel method for structural fatigue damage identification of aircraft thin plates based on modal strain energy analysis is proposed. Since structural damage can lead to the variation of modal performance, the modal strain energies of the thin plate before and after the damage are compared and the variation rate of the modal strain energy is chosen as the damage indicator. Before the damage indicator construction, the stiffness of the elastic plate is composed of element stiffness. Based on the definition of sensitivity formula of elemental stiffness, the relation of modal strain energy of the thin plate before and after the damaged is set up. The examples are given. Finally, the present method is compared with the MFC method, their advantage and disadvantage in single damage and multiple damage identification are discussed.关键词
振动与波/模态应变能/损伤识别/弹性薄板Key words
vibration and wave/modal strain energy/damage detection/elastic thin plate分类
航空航天引用本文复制引用
刘文光,颜龙,郭隆清..基于模态应变能法的弹性薄板损伤识别[J].噪声与振动控制,2016,36(3):164-168,5.基金项目
国家自然科学基金资助项目(51565039) （51565039）
