摘要
简要介绍了四种方法对应的模态理论基础,通过试验研究验证了应变模态对结构局部损伤的敏感性,讨论了应变模态对局部损伤的敏感范围。研究表明,基于环境激励法的应变模态试验可有效地识别损伤位置。
By means of experiments, this paper proved that strain mode is more sensitive to local structural damage, and the strain mode experiment based on environmental incitement method can efficiently identify the position of the damage. Meanwhile, the paper discussed the limited extension of the local damage that strain gauge can identify.
出处
《工程质量》
2008年第10期10-13,共4页
Construction Quality
关键词
损伤识别
动态测试
应变模态
位移模态
damage identification
dynamic test
strain mode
displacement mode
