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在工程施工中,常常使用到起重机。起重机对于工程的安全和效率起着很重要的作用。虽然对于起重机的重视度很高,但是起重机仍然多发事故。这是由于起重机本身的物理特性造成的。尤其是起重机经常出现金属结构故障,而这一故障往往是因为局部焊接存在缺陷。所以,要通过对起重机的故障发生的规律进行研究,从而预防起重机事故的发生。本文首先分析了有限单元法及锻炼力学解决故障的思路,然后讨论了建立起重机的有限元模型的环节与步骤,最后说明了起重机的疲劳研究和寿命分析。
In construction, the crane is often used. Crane plays a very important role in the safety and efficiency of the project. Despite the high degree of attention to the crane, but the crane is still multiple accidents. This is due to the physical nature of the crane itself. In particular, cranes often exhibit metal structure failures, which are often caused by localized welding defects. Therefore, it is necessary to study the law of crane failure to prevent crane accidents. This paper firstly analyzes the idea of finite element method and exercise mechanics to solve the fault, and then discusses the steps and steps of establishing the finite element model of the crane. Finally, the fatigue research and life analysis of the crane are described.