关键词: 铝合金固溶成形, 6016铝合金, 后风挡下横梁, 有限元模拟, 力学性能

Abstract: The aluminum alloy car windshield beams were taken as the research objects,and the PAM-STAMP software was used to analyze the one-step solid solution forming and step-by-step solid solution forming processes. By optimizing key processing parameters such as friction coefficient and forming temperature and carrying out the corresponding processing experiments, a processing simulation model was established. The rationalities of the forming processes were judged by using the error analysis between the experimental values and the numerical simulation ones of the wall thickness distributions on the measurement paths. The results show that after the car windshield beams using a forming way to cause cracking or deformation mutation in the middle place thinned phenomenon, along with the friction coefficient increases, the minimum thickness is fallen sharply. Compared with the one-step forming method, the step-by-step forming method is adopted, the minimum thinning rate is reduced by 4.67%, the rebound amount is reduced by 40.21%, and the temperature and friction coefficient have less influences on the minimum thickness. The mechanics property tests after aging treatment, the tensile strength is of 308 MPa, which proves that the aluminum alloy car windshield beams formed by solid solution processes are feasible.

Key words: aluminum alloy solid solution forming, 6016 aluminum alloy, windshield beam, finite element simulation, mechanics property