Based On Parametric Design Optimization Ideas Port Quayside Container Crane Structure And Its Dynamic Characteristics Analysis And Control

With the development of shipping, there are more and more requests about quayside container crane structure. Larger of the ships freighted with containers cause extend of outreach of quayside container crane. This result in two problems in the development of quayside container crane: 1, design problem. Many design departments adopt FEM software at present, but it is almost by the way of manual-software, that is manually creating model, manually getting result, it solves the calculation problem in a certain extent, but there are still some disadvantages: first, the efficiency of creating model and getting result is very low, what's more, the structure calculation of each quayside container is isolated, and the structure can not be calculated circularly, so the optimal design can not be realized; second, CAE can not lead to CAD, and CAE is only as the checkout of CAD. Structure design depend on experience too much. It means that the structure design is old-fashioned, and it lead to high weight to waste material and be bigger wheel pressure (which make the dock building cost more), so it restrict the development of quayside container crane. 2 vibration problem. This is an outstanding problem during the process of quayside container crane put into use. Large-sized crane is confined in self-weight (mainly by dock) and it is necessary to make flexible structure, which cause intense vibration. It is most essential to limit vibration for structure security as well as work efficiency and staff comfort.As to the first question, with the rich experience of structure calculation, combining computer data-base theory and modern optimal design measure, this dissertation creates a system of quayside container crane optimal design: using VB program to transfer and organize and calculate parameters, using Excel to store data to create a core database, then to make secondary development of the FEM software ANSYS, to design the input and output of data. On the base of the above measures, it is very good to solve the problem of low efficiency, and realize optimal design to a certain extent, it is very useful for the design of large-sized crane. Additionally this dissertation brings forward a new idea about structure design led by the combination of experience and the optimal design measure.As to the second question, every possible factors have been analyzed and compared. Consequently, the tuned mass damper-TMD which applied in many towering structures of civil engineering is adopted. Reference to the method that used to solute the first question, the dissertation do a lot in concrete scheme of TMD dashpot limiting vibration and in TMD parameters optimal design. Dynamic analysis of the container crane is made. The objects are two kinds of machine: container crane with single boom and container crane with double booms. (the models are both created by parameters). As the previous work of design of TMD, the models are calculated by MODAL analysis to compare the dynamic features of two machines. Through the analysis, one can find that the result conform to thetheory, that is said, the model and the MODAL calculation method selected are correct. At Last, TMD are used to control the vibrancy of the two machines with the result of MODAL analysis and the theory of vibrancy control and some experience about it. The optimal design of the TMD has two sides: one is the parameters of the TMD, another is the position of the TMD. The former is taken by the program seeking, the latter is considered with the theory of vibrancy control and experience and the actual require. Through the emulation, it can be found that the effect of TMD is very good.