起重机金属结构疲劳寿命评估系统开发  

Development of an Evaluation System for Fatigue Life of Crane Metal Structures

作　　者：吕晶晶 陈江义[1] LV Jing-jing, CHEN Jiang-yi(School of Mechanical Engineering, Zhengzhou University, He＇nan Zhengzhou 450001, Chin)

机构地区：[1]郑州大学机械工程学院,河南郑州450001

出　　处：《机械设计与制造》2018年第8期174-176,180,共4页Machinery Design & Manufacture

基　　金：2015年国家科技支撑计划项目:轻量化桥式起重机推广应用技术研究(2015BAF06B06);河南省科技攻关重点项目(132102210107)

摘　　要：利用VB语言和ANSYS二次开发语言APDL,开发了起重机金属结构疲劳寿命评估系统。其中,VB平台用来设计方便友好的人机交互界面,采用APDL语言开发起重机金属结构强度参数化分析模块。在结构疲劳寿命评估工具中,提供了基于Paris公式、Paris公式与Miner线性累积损伤理论相结合、热点应力法的三种不同寿命估算模型。最后以某桥式起重机桥架结构为对象,对所开发的软件工具功能进行了具体验证,结果表明该工具可以为起重机金属结构的数字化设计提供帮助。By means of VB and secondary development language APDL in ANSYS,a software system is developed to evaluate the fatigue life of metal structures of crane. We use the VB to design the friendly and convenient user-machine interface. And the strengthen analysis function of crane metal structures is realized with the help of APDL. In this system,three evaluation methods are provided,which are Paris Formula,mixed method combining Paris Formula with Miner linear cumulative damage theory and spot stress method. Finally,a girder structure of the overhead crane is utilized to test and verify the functions of the evaluation system. The results show that this software system is very helpful to implement digital design of metal structures of crane.

关 键 词：起重机金属结构 疲劳寿命 评估工具 APDL VB 

分 类 号：TH16[机械工程—机械制造及自动化] TB21[一般工业技术—工程设计测绘]