重庆大学学报：自然科学版2011，Vol.34Issue(8)：114-120,7.
混合动态子结构综合法在塔机动力学分析中的应用
Applying hybrid dynamic substructure synthetic method to dynamic analysis for tower crane
摘要
Abstract
This paper presents a dynamic hybrid substructure synthetic method for tower crane dynamic analysis.This method employs the transfer matrix method and the flexibility degree method respectively to formulate the vibration mathematical models of the tower body and tower top system substructures in the hoisting luffing plane.Based on the motion of the substructures in the interface and the dynamic harmonize condition,the frequency equations are established.Then the program is designed according to the mathematical models and firstly applied to the dynamic analysis of the QTZ63 tower crane in the construction site and the parameter identification of attached device and tower body.The test results show that the value calculated by the above method is quite approximate to the instrument measured value,which can meet the engineering requirements.Further study has found that,for the flexible long-distance attached tower crane,the method that introduces dynamic load coefficient for statics analysis of tower cranes is unprecise enough since there exist errors.This paper suggests to conduct site test and identification of the rigidity coefficient of attached device of the tower crane for the accident prevention of tower crane collapse by timely take measures.关键词
塔式起重机/柔性附着/子结构综合法/动力分析Key words
tower crane/elastic attached/substructure synthetic method/dynamic analysis分类
机械制造引用本文复制引用
王蔚佳,刘成毅,钟伟,李正良..混合动态子结构综合法在塔机动力学分析中的应用[J].重庆大学学报：自然科学版,2011,34(8):114-120,7.基金项目
国家自然科学基金资助项目 （）
