Abstract
The ABAQUS finite element simulation software is used to simulate the flexible multi-point three-dimensional stretch bending process of aluminum profiles. The effect of process parameters on the web thickness of rectangular profile in flexible multi-point three-dimensional stretch bending is studied by orthogonal experiment and range analysis. The process parameters used in the experiments include pre-stretching value, post-stretching value, the number of multi-point dies and friction coefficient. The optimal combination of process parameters is obtained by numerical simulation and experimental verification. When the aluminum profile is completed flexible multi-point stretch bending according to the best parameters, the thickness thinning of outer web and inner web is the smallest. The experimental result is closed to the numerical simulated results. The effectiveness of the numerical simulation is verified by the corresponding experimental methods.
Highlights
Nguyen and Trung found that the change of thickness depends on input parameters such as process parameters, die geometry and workpiece material, and determined the relationship between thickness distribution and input parameters [2]
In order to find the proper process parameters that minimize the degree of profile thinning in the flexible multi-point three-dimensional (FMD) stretch bending process, the orthogonal experiment was used to predict the pre-stretching amount, post-stretching amount, the number of multi-point dies, and the friction coefficient by the finite element simulation software
The friction coefficient is represented by μs
Summary
Due to the rapid development of the automobile and high-speed rail industry in recent years, people pay more and more attention to the lightweight design of the structure [1]. In this situation, reducing the weight of cars and high-speed trains cannot only decrease energy consumption and alleviate the growing energy crisis, and lessen waste emissions. The stretch bending process of profiles has been widely used, and it has always been a hot issue in the field of material processing. Nguyen and Trung found that the change of thickness depends on input parameters such as process parameters, die geometry and workpiece material, and determined the relationship between thickness distribution and input parameters [2]
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