6082-T6铝合金构件受弯承载力计算方法

To predict the bending strength of 6082-T6 aluminum alloy flexural members, experimental studies of 24 tensile coupon tests and 19 three-point bending tests of box-section were performed. Finite element models using ABAQUS were developed and verified against the test results of 19 beams, and then used to perform parametric studies, in which a total of 468 numerical results were generated. The experimental and numerical results were used to evaluate the bending resistance provisions of the current American, European and Chinese Specifications. The impact of plate-assembly effect was not considered in these three specifications, which made the calculating process lightly complicated and the results relatively conservative. Based on direct strength method, the calculation method of bending strength considering the material nonlinear characteristics and initial geometric imperfection was proposed for 6082-T6 aluminum alloy bending members with box-section. Compared with the results of experimental data and three design specifications, it shows that the proposed calculation method is more accurate and convenient in predicting the bearing capacity of 6082-T6 aluminum alloy three-point bending beams of box-section.