岸边集装箱起重机钢结构有限元分析及寿命预估
发布时间：2018-07-29 11:07
【摘要】：随着集装箱运输行业的快速发展,集装箱深水码头的数量与集装箱码头吞吐量都在快速增加,这对码头的装卸设备与工艺提出了跟高的要求。岸边集装箱起重机作为码头前沿装卸的主要力量,正向着大型化与高效化的方向发展,钢结构所承受的载荷与日俱增,疲劳破坏作为钢结构失效的主要原因之一,已逐渐引起人们的重视。本文利用workbench对振华港机某80T级实验岸边集装箱起重机做了详细的有限元分析,得到了起重机钢结构在不同工况下的应力分布。对实验岸边集装箱起重机进行了应力实测,结果与有限分分析情况对比,验证了有限元分析模型的有效性。根据有限元分析得到的应力分布情况确定岸边集装箱起重机的疲劳弱点区域,通过雨流计数法从弱点区域的应力时程曲线中获取应力循环,以有效应力范围对其进行表征,结合起重机载荷谱,使用基于有效应力因子幅的寿命预估方法对起重机进行寿命预估。本文利用LabWindows/CVI编制了起重机寿命预估软件。软件包含信息输入模块、基础参数输入与方法选择模块,数字滤波模块、寿命预估模块、图谱显示模块、数据库存储模块与结果导出模块。补充警戒、报警单元与DAQ数据采集部分,软件能够在线运行,为起重机的安全运行提供可靠支持。
[Abstract]:With the rapid development of container transportation industry, the number of container deepwater terminals and the throughput of container terminals are increasing rapidly. The quayside container crane is developing towards the direction of large scale and high efficiency as the main force of loading and unloading in the front of wharf. The load of steel structure is increasing day by day, and fatigue damage is one of the main reasons for the failure of steel structure. It has gradually attracted people's attention. In this paper, the finite element analysis of an 80T class experimental container crane of Zhenhua Port Machine is carried out by using workbench, and the stress distribution of the crane steel structure under different working conditions is obtained. The stress measurement of the experimental container crane is carried out. The results are compared with the finite element analysis, and the validity of the finite element analysis model is verified. According to the stress distribution obtained from the finite element analysis, the fatigue weakness area of the container crane is determined. The stress cycle is obtained from the stress history curve of the vulnerable area by the rain flow counting method, and characterized by the effective stress range. Combined with the load spectrum of crane, the life prediction method based on the amplitude of effective stress factor is used to predict the life of crane. In this paper, a crane life prediction software is developed by using LabWindows/CVI. The software includes information input module, basic parameter input and method selection module, digital filter module, life prediction module, graph display module, database storage module and result export module. Supplementary warning, alarm unit and DAQ data acquisition part, the software can run online, providing reliable support for the safe operation of crane.
【学位授予单位】：华东理工大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TH21
本文编号：2152488
[Abstract]:With the rapid development of container transportation industry, the number of container deepwater terminals and the throughput of container terminals are increasing rapidly. The quayside container crane is developing towards the direction of large scale and high efficiency as the main force of loading and unloading in the front of wharf. The load of steel structure is increasing day by day, and fatigue damage is one of the main reasons for the failure of steel structure. It has gradually attracted people's attention. In this paper, the finite element analysis of an 80T class experimental container crane of Zhenhua Port Machine is carried out by using workbench, and the stress distribution of the crane steel structure under different working conditions is obtained. The stress measurement of the experimental container crane is carried out. The results are compared with the finite element analysis, and the validity of the finite element analysis model is verified. According to the stress distribution obtained from the finite element analysis, the fatigue weakness area of the container crane is determined. The stress cycle is obtained from the stress history curve of the vulnerable area by the rain flow counting method, and characterized by the effective stress range. Combined with the load spectrum of crane, the life prediction method based on the amplitude of effective stress factor is used to predict the life of crane. In this paper, a crane life prediction software is developed by using LabWindows/CVI. The software includes information input module, basic parameter input and method selection module, digital filter module, life prediction module, graph display module, database storage module and result export module. Supplementary warning, alarm unit and DAQ data acquisition part, the software can run online, providing reliable support for the safe operation of crane.
【学位授予单位】：华东理工大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TH21
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