Research On Truss Structure Optimization Method Based On CRO Algorithm And Its Application

Optimized design method is a combination of optimization theory and computer technology,a comprehensive application of engineering technology,and in the design field has been widely used.In order to solve the problem of structural engineering optimization,the purpose of structural optimization research is to meet the requirements of various specifications and specific requirements,it is expected to make its structure performance,stiffness,weight and project cost are optimal.Traditional optimization algorithms in solving high dimensional and complex problems more constraints on solving accuracy and convergence speed can not meet the requirements of the problem,a and intelligent optimization algorithm as a new powerful technologies by simulating natural phenomena or certain biological characteristics in the overall,efficient,versatility and robustness have shown its superiority,So it is very important to solve the practical problem of intelligent optimization algorithm is very important.Based on the study of the basic principles and design concepts of CRO algorithm,this paper analyzes the shortcomings of traditional methods,and makes a related research on the concrete problems and algorithms of structural optimization of civil engineering.Aiming at the application of CRO algorithm,the truss structure with stress constraint and displacement constraint is optimized.The main contents are as follows:(1)Aiming at the optimization problem of truss structure and its characteristics,the mathematical model of the truss structure with stress constraint and displacement constraint is established by experimentally selecting the algorithm parameters which accord with the practical problem of this paper.This paper introduces the commonly used processing constraint method.The penalty function mechanism is used to deal with the constraint function in engineering.The influence of different penalty factors on the convergence speed and precision is compared with the traditional processing method.According to the characteristics of intelligent algorithm,According to the ratio of feasible solutions,the adaptive penalty factor is used to improve the efficiency and convergence of the algorithm.(2)This paper implements the above optimization process,and the typical truss structure of three-bar and ten-bar is optimized based on the new solution.Compared with the optimization results,optimization process and optimization of traditional algorithm and genetic algorithm The results were carried out to verify the feasibility and effectiveness of new ideas.(3)Based on the Eclipse integrated development platform,the intelligent optimization system of truss structure is developed.The development framework and module of the intelligent optimization system of truss structure are introduced,and the function of each module is demonstrated.