Optimization of the materials distribution in composite systems

20th Innovative Manufacturing Engineering and Energy Conference

机械制造;能源学

Poteralski, A.^1 ; Szczepanik, M.^1

Institute of Computational and Mechanical Engineering, Faculty of Mechanical Engineering, Silesian University of Technology, Poland^1

关键词: Artificial Immune System;    Bio-inspired methods;    Level set approach;    Optimal microstructure;    Optimal topologies;    Optimization of structures;    Optimization problems;    Optimization techniques;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/161/1/012063/pdf
DOI  :  10.1088/1757-899X/161/1/012063

来源: IOP

【 摘 要 】

The optimization of structures in macro scale is widely used nowadays. The goal of the paper is to apply optimization techniques to obtain better performance on the micro level. The presented methods open new possibilities. The structures build with the use of materials with optimal microstructure can obtain the best performance. The microstructure can be optimized taking into account loads of the macro structure. The optimization of microstructure is not easy currently, but in future, in applications where performance of the structure is very important, the presented approach may be used with success. A bio-inspired method based on the artificial immune system (AIS) is used to solve the optimization problem. Immune computing provides a great probability of finding the global optimum. The optimal topology is generated by the level set approach. Optimization (identification) of the topology and the distribution of the mass density of microstructure considered to two materials by the minimization of the fitness function which depended on the coefficients of stiffness matrices. The paper presents methodology, algorithm of optimization and numerical examples.