岸边集装箱桥式起重机动刚度的实验与理论研究
发布时间：2018-08-25 17:17
【摘要】：起重机金属结构动态刚度的问题越来越受到关注。动态刚度的合理与否影响到了起重机的使用性能和其金属结构的使用寿命，但这种影响又不像强度和静态刚度那样直接明了。因此，对起重机的动态刚度进行深入的研究是目前业界的一个重要课题。研究动态刚度首先需要全面了解它，本文通过对目前起重机动态刚度研究发展历程的探索，总结阐述了其研究现状，并提出了新的研究方向和问题。 岸边集装箱桥式起重机的应用范围越来越大，这得益于集装箱运输方式的快速发展。与此同时，高速发展的远洋贸易促使着港口吞吐量的快速增长，也相应要求岸边集装箱桥式起重机装卸效率的不断提高。为了满足这一条件，岸边集装箱桥式起重机的金属结构不断加高变大，其金属结构动态刚度的问题也越来越凸显。相较于普通桥式起重机，岸边集装箱桥式起重机的结构更加复杂，这也给其动态刚度的研究带来了困难。 本文通过现场检测和有限元模型试验相结合的方法，以一台实际生产使用中的岸边集装箱桥式起重机为具体研究对象，主要应用ANSYS有限元软件完成了起重机动态刚度的研究。ANSYS有限元软件是被广泛利用的有限元分析软件。在本文中主要利用了ANSYS有限元分析软件的模态分析功能完成了岸边集装箱桥式起重机固有频率的求解，同时还利用有限元模型结构形式的改变探索了动态刚度的主要影响因素。
[Abstract]:More and more attention is paid to the dynamic stiffness of crane metal structures. Whether the dynamic stiffness is reasonable or not affects the service performance of crane and the service life of its metal structure, but this influence is not as clear as the strength and static stiffness. Therefore, it is an important subject to study the dynamic stiffness of crane. In order to study dynamic stiffness, it is necessary to understand it comprehensively. In this paper, the current situation of research on dynamic stiffness of cranes is summarized, and some new research directions and problems are put forward through the exploration of the development history of the research on dynamic stiffness of cranes at present. The application of quayside container bridge crane is more and more extensive, which benefits from the rapid development of container transportation mode. At the same time, the rapid development of ocean trade promotes the rapid growth of port throughput, and also requires the continuous improvement of loading and unloading efficiency of quayside container crane. In order to meet this condition, the metal structure of the quayside container crane becomes bigger and higher, and the dynamic stiffness of the metal structure becomes more and more prominent. Compared with ordinary bridge cranes, the structure of quayside container crane is more complex, which brings difficulties to the study of dynamic stiffness. In this paper, a quayside container bridge crane, which is used in actual production, is taken as the research object through the combination of field test and finite element model test. The dynamic stiffness of crane is studied by using ANSYS finite element software. ANSYS finite element software is a widely used finite element analysis software. In this paper, the modal analysis function of ANSYS finite element analysis software is used to solve the natural frequency of quayside container bridge crane. At the same time, the main influencing factors of dynamic stiffness are explored by changing the structure form of finite element model.
【学位授予单位】：武汉理工大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U653.921
本文编号：2203572
[Abstract]:More and more attention is paid to the dynamic stiffness of crane metal structures. Whether the dynamic stiffness is reasonable or not affects the service performance of crane and the service life of its metal structure, but this influence is not as clear as the strength and static stiffness. Therefore, it is an important subject to study the dynamic stiffness of crane. In order to study dynamic stiffness, it is necessary to understand it comprehensively. In this paper, the current situation of research on dynamic stiffness of cranes is summarized, and some new research directions and problems are put forward through the exploration of the development history of the research on dynamic stiffness of cranes at present. The application of quayside container bridge crane is more and more extensive, which benefits from the rapid development of container transportation mode. At the same time, the rapid development of ocean trade promotes the rapid growth of port throughput, and also requires the continuous improvement of loading and unloading efficiency of quayside container crane. In order to meet this condition, the metal structure of the quayside container crane becomes bigger and higher, and the dynamic stiffness of the metal structure becomes more and more prominent. Compared with ordinary bridge cranes, the structure of quayside container crane is more complex, which brings difficulties to the study of dynamic stiffness. In this paper, a quayside container bridge crane, which is used in actual production, is taken as the research object through the combination of field test and finite element model test. The dynamic stiffness of crane is studied by using ANSYS finite element software. ANSYS finite element software is a widely used finite element analysis software. In this paper, the modal analysis function of ANSYS finite element analysis software is used to solve the natural frequency of quayside container bridge crane. At the same time, the main influencing factors of dynamic stiffness are explored by changing the structure form of finite element model.
【学位授予单位】：武汉理工大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U653.921
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