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Abstract: Thin-walled tube NC bending process will be widely
employed in automobile and aviation industries for its high efficiency,
precision and satisfaction of lightweight products. The deform law of
this process must be studied in order to totally manufacture qualified
parts by obtaining optimized parameters. The key problems concerned with
the FEM simulation system, such as element election, boundary condition
and friction are studied. A 3D rigid-plastic FEM simulation system is
developed for the thin-walled tube NC bending process based on the above
research. Moreover the stress distribution during the process with
varied rotate velocity of the bend die is analyzed.
Key words: Thin-walled tube NC bending process FEM simulation
CLC No: TG386
国家自然科学基金(59975076, 50175092)、国家杰出青年科学基金(50225518)高等学校优秀青年教师教学科研奖励计划和陕西省自然科学基金(2002E223)资助项目.
Received 20020815, received in revised form 20030120
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