关键词: 单点增量成形, 仿真模型, 成形参数, 管材

Abstract: Single point incremental forming technology was introduced into the metal corrugated tubes forming processes，and a single point incremental forming processes of metal corrugated tubes was presented.Finite element model of single point incremental forming of metal corrugated tubes was established based on ABAQUS/Explicit.Analysis results show that the evolution of forming forces，forming stresses，local deformation displacements，and plastic strain distributions in the forming processes.An experimental platform for single point incremental forming was set up.These data of the forming processes  were collected，and the experimental data were analyzed.The results show that this component in X direction forces in the incremental forming force of the tube wall is the largest，followed by Y direction and Z direction.There is a large plastic strain in inclined wall areas and the circular-arc surfaces，which has easily leads to the thickness thinning and cracking of tube walls.

Key words: single point incremental forming, simulation model, forming parameter, tube