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Study on Dynamic Characteristics of Structural System of Tower Crane

Author: HuangYanPing
Tutor: XiaYongFa
School: Northeastern University
Course: Mechanical Design and Theory
Keywords: Tower crane Finite element method Natural frequency Sensitivity Analysis Dynamic Optimization
CLC: TH213.3
Type: Master's thesis
Year: 2008
Downloads: 212
Quote: 2
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Abstract


The tower crane is widely used in construction and industrial lifting machinery, tower crane work institutions frequent starting, braking and complex coupled motion . Accurate description and accurate calculation of tower crane structural systems under external excitation dynamic process for the tower crane design, production theory and practice guidance . With the continuous development of computer hardware and software technology and applications growing , the computer is widely used in modern design methods . The finite element method is a numerical solution of the computer to solve the problem of the structure of static, dynamic mechanical properties , the analysis of the computational complexity of the structure is extremely effective , can greatly improve the level of product design and speed . This paper describes the development status of the tower crane at home and abroad , the dynamic nature of the research , as well as the optimal design in the crane industry , currently only limited to the study of the dynamic characteristics of the tower crane modal analysis and dynamic response analysis proposed the ANSYS software tower crane dynamic optimization design ideas . In conjunction with the ideas, select a model tower crane dynamic characteristics analysis . According to the theory of elasticity , finite element analysis software ANSYS finite element dynamic model . Modal analysis and harmonic response analysis to determine the effect of the dynamic performance of the tower crane key modal frequencies and the order frequency as the objective function , all structural parameter sensitivity analysis to determine the dynamic optimization of tower crane design variables ; tower the quality of the machine structure system , static strength, static rigidity, dynamic displacement response amplitude as a constraint , the establishment of a dynamic mathematical model of optimization . The analysis indicates that the the Tower Crane system not only optimized static and dynamic performance is greatly improved, and effectively reduce the quality of the structure , to improve economic performance .

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CLC: > Industrial Technology > Machinery and Instrument Industry > Lifting machinery and transport machinery > Lifting machinery > Mobile crane > Tower
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