In this study,a new type of splicing T-shaped angle aluminum structure model was designed using ABAQUS finite element software,and response surface model was used to optimize various process parameters of the splicing T-shaped angle aluminum structure.Then,a new spatial aluminum alloy latticed shell structure model was designed with the optimized splicing T-shaped angle aluminum as the main component,and the effects of rise-span ratio,thickness-span and mesh number on the mechanical properties of the model were analyzed.The results showed that when the aluminum alloy thickness is 2 mm,the slenderness ratio of weak axis is 37.39,the number of connection joints is 6.71,and the angle aluminum spacing is 28.77,the maximum ultimate bearing capacity can reach the optimal value of 446.50 kN.In addition,the experimental results of mechanical properties of spatial aluminum alloy latticed shell structure show that when the rise-span ratio is 1/4,the thickness-span ratio is 1/75 and the mesh number is 16,the mechanical properties of latticed shell structure are optimal.
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