木材科学与技术2024，Vol.38Issue(2)：36-42,7.DOI:10.12326/j.2096-9694.2023190
基于应变模态曲率差的木梁损伤识别
Damage Identification of Wooden Beams Based on Strain Modal Curvature Differences
摘要
Abstract
This paper presents a damage identification approach based on the difference in curvature of strain modes to identify the defects of the cross-section of wooden beams.First,modal analysis was performed to establish the finite element models of both intact and damaged wooden beams using ABAQUS.Next,the damage identification indicators of strain mode and strain mode curvature difference were used to locate and identify the damage of the wooden beams,and the damage degree of the wooden beams was estimated by fitting the relationship between strain mode curvature difference and damage degree.Lastly,the wooden beams test was used to confirm the validity of the indexes.The results reveal that:the strain mode damage identification index is unsatisfactory for damage localization of wooden beams;the strain mode curvature difference index has strong sensitivity and can properly identify different damage and degrees locations of wooden beams.关键词
木梁/应变模态曲率差/损伤识别Key words
wooden beams/strain modal curvature difference/damage identification分类
农业科技引用本文复制引用
孟昭博,高飞飞,王鑫,任现才,张立伟,荣珂欣..基于应变模态曲率差的木梁损伤识别[J].木材科学与技术,2024,38(2):36-42,7.基金项目
国家自然科学基金项目"交通激励下天水古民居木结构的损伤识别与疲劳寿命研究"(52068063) （52068063）
山东省自然科学基金面上项目"交通激励下古建筑木结构损伤识别研究"(ZR2020ME240). （ZR2020ME240）
