简支梁结构裂纹损伤的数值分析及仿真  

Numerical Analysis and Imitation of Response on Construction Flaws Damage of Simply Supported Beam

作　　者：刘大任[1] 侯祥林[2] 高岳阳 

机构地区：[1]沈阳建筑大学学报编辑部,辽宁沈阳110168 [2]沈阳建筑大学理学院,辽宁沈阳110168 [3]沈阳市房联股份有限公司,辽宁沈阳110002

出　　处：《沈阳建筑大学学报（自然科学版）》2006年第3期379-382,共4页Journal of Shenyang Jianzhu University：Natural Science

基　　金：辽宁省教育厅项目(20040297)

摘　　要：目的解决实际工程中梁结构裂纹损伤问题.方法对工程中梁结构动力学方程利用差分数值分析方法,得出其差分方程并编制计算机程序对典型结构的不同深度裂纹计算响应数据和绘制响应的仿真曲线.结果通过结构的响应数据和仿真曲线找出结构损伤的固有特性,并将差分数值方法与实验测试结果和有限元计算结果对比,表明差分算法是具有计算量小、并可有效地反映梁裂纹损伤状况.结论通过与有限元计算结果和实验测试结果的对比分析,可知笔者提出的差分方法确为一直接的、计算简便、有效地解决复杂结构问题的方法.能够为建立诊断样本提供理论计算依据.This research aims at solving the problem of simply supported beam in the practical construction. Method： According to difference Numerical algorithm of beam structure mechanics of construction, A computed program is studied to analyze response of construct flaws damage with differ depth flaws, and the intrinsic property of construct damage is found. With response data and emulational curve, the intrinsic property of construct damage is found out. Contrast with computing result of limited unit method and experiment result, it is showed that the kind of method is ease in computing and effective in responding result of flaws damage. Thus, the comparing analysis of limited unit method and experimental test result, shows that the numerical algorithm is a direct, simple and correct method, and it can provide theoretical computing data for diagnosing samples.

关 键 词：简支梁 结构损伤 响应 差分数值方法 仿真 

分 类 号：TP206[自动化与计算机技术—检测技术与自动化装置]