Combined optimization design method based on MATLAB and ABAQUS

Abstract

The invention discloses a mutual calling method based on MATLAB and ABAQUS. The method is based on an operation mechanism of MATLAB and ABAQUS. The advantages of MATLAB and ABAQUS are utilized, MATLABis used as a main program, the structural boundary dimension, material parameters, iteration conditions and the like are set in the main program, a data result of ABAQUS analysis is automatically called through the MATLAB main program, and automation of optimization design operation iteration is achieved. According to the method, the advantages of MATLAB in the aspects of programming, operation,data processing and graphic processing can be organically fused with the authority of ABAQUS in the strong finite element analysis aspect, the operation efficiency can be effectively improved, the automation of optimization design operation iteration is achieved, and a new design approach is provided for structure optimization design.

Description

technical field [0001] The invention relates to the field of software technology, in particular to a combined optimization design method based on MATLAB and ABAQUS. Background technique [0002] With the development of modern mechanical design methods, optimal design has gradually developed. Optimum design is based on the optimization theory in mathematics, using computer as a means, according to the performance goals pursued by the design, establishes the objective function, and finds the optimal design scheme under the satisfaction of various given constraints. [0003] figure 1 Shown is the traditional optimization design method, manually start the ABAQUS software, create geometric components in the ABAQUS interface, define material properties, divide meshes and generate finite element models, establish analysis steps, interactions, loads and boundary conditions, and submit optimization , after the results are obtained, manually record the simulation results. Apply the...

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Problems solved by technology

Cycle N times. After each ABAQUS simulation, manual participation is required to record the analysis results. If the number of simulations is large and the number of times is large, the corresponding time and manpower will be huge, and the efficiency and operation accuracy will be greatly reduced.

[0004] The current existing optimization methods only use MATLAB or ABAQUS software to carry out independent optimization design. The disadvantages of this method are: (1) After ABAQUS calculates the results, it is necessary to manually record the calculation results, and then MATLAB optimizes the corresponding parameters. It is cumbersome to operate back and forth between the two software multiple times, which consumes a lot of time and low efficiency;

[0005] (2) For each iteration of MATLAB, ABAQUS will re-analyze and calculate. ABAQUS graphics operations are more complicated, and errors are prone to occur in each operation;

[0006] (3) If only ABAQUS is used for optimization design, on the one hand, parametric programming is relatively complex and poor in stability; on the other hand, ABAQUS does not have the advantages of MATLAB's efficient numerical calculation and graphics processing functions, resulting in long optimization time and low efficiency

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