Abstract: Based on the two-axle bending technique,the formability of 3/4 hard type 301 stainless steel strip with different thickness was researched.First,to establish the constitutive model of 3/4 hard type 301 stainless steel strip,its basic performance parameters were obtained by using of the tensile test and related documentation,and the forming process of strips with different thickness in the same amount of extrusion by two-axle bending was simulated by using finite element analysis software named ABAQUS.And then,followed by the two-axle bending experiments by using of different thickness strips,a series of samples were got.Last,MATLAB fitting procedure was used to identify forming radius of strips formed by the test and simulation,effect of strip thickness on its forming performance was discussed,the influence law of strip thickness on two-axle bending formability was obtained,and its influence mechanism was revealed.

Key words: split sleeve, finite element simulation, two-axle bending, strip thickness