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Topology Optimization of Frame Based on Ant Colony Algorithm

Author: LiuZhiXin
Tutor: ZhouZhiGe
School: Hebei University of Technology
Course: Mechanical Engineering
Keywords: frame topology optimization ant colony algorithm finite element
CLC: TP301.6
Type: Master's thesis
Year: 2011
Downloads: 52
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Abstract


In order to meet the manufacturers’demands for reducing manufacturing costs and improving utilization of raw materials,therefore the research on the transport vehicle frame structure optimization design is made with a strong practical significance. Transport vehicle frame structure optimization problem is essentially a discrete optimization problem of body, the traditional optimization design method in research in this area has achieved some results. Nowadays bionic optimization algorithm capable of parallel computing and less demanding on behavior of the function itself is booming,this paper is based on this trailer transport vehicles for the frame structure,using the ant colony algorithm for topology optimization of frame structures to reduce the weight of the structure. The work is done as follows:First, introduce the basic idea and principle of ant colony algorithm, then summarize the research achievement in the design of truss structure optimization made by domestic and foreign scholars, and other mechanical work applied the ant colony algorithm and the algorithm to improve its own research, providing some guidelines on how to apply the ant colony in topology optimization of frame structure.Secondly, in order to facilitate the smooth progress of optimization, the finite element analysis for the frame is made by making use of three-dimensional design software UG and finite element analysis software MSC.Patran and MSC.Nastran. The analysis results of topology optimization are used as the reference of a next step when setting performance constraints. Using advanced programming language MATLAB, we build the frame beam element based on finite element analysis program according to the basic theory and basic knowledge in finite element analysis method.Finally, the overall quality of the frame as the objective function, in the constraints of frame displacement, natural frequency and other performance parameters, we programmed topology optimization problem on the beam for the variables 0 / 1 into the design process based on ant colony optimization. In the optimization process call finite element analysis program, eliminating the finite element analysis software and data interface problems. The correctness of this method can be proved through the analysis of the optimized frame verification.

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CLC: > Industrial Technology > Automation technology,computer technology > Computing technology,computer technology > General issues > Theories, methods > Algorithm Theory
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