摩擦对大口径铝合金薄壁矩形管数控绕弯成形起皱的影响研究.pdf

070321 ABAQUS/ Explicit , (1) (2) 01 (3) (4) 1 Friction on large diameter aluminum alloy thin-wall rectangular tube NC rotary draw bending the study on the impact of wrinkles Student name: Liu Yuhua Class: 070321 Supervisor: Zhao Gangyao Abstract: Aluminum alloy thin-walled rectangular waveguide tube is a key component widely used in the field of radar and radio communication system, and the rotary draw bending is the main forming method of rectangular waveguide tube. Wrinkling is one of the most important defects during thin-walled rectangular aluminum alloy tube rotary-draw bending process and severely affects the forming quality of rectangular wave. However, rectangular tubes and different mould contact role is decided tube CNC bending process forming limit and the forming quality key factors, and the friction is described and die in rectangular tubes, main