|
Abstract: Numerical simulation on forming process of Alto car fender
is introduced to optimize parameters. Structure elements of cover panel
and the index library of similar event are set up based on the
experience knowledge and the similarity theory．The complementary surface
is built through the method of index of similar event ，the position of
draw bead and stamping direction and others process parameters are made
certain at the same time．The mesh deformations of forming process are
dynamically showed and a lot of information including FLD, distributions
of stress, strain and thickness are also related. Binder force and shape
of draw bead are opti- mized；the die is made and the forming test of
Alto car fender is completed by the simulation result. The experiment
results show that the simulation and parameter optimization based on
experience knowledge can be used to direct practical production and can
be used to reduce production cycle and material consumption.
Key words: Experience knowledge Similarity theory Cover panel
Numerical simulation Parameter optimization
CLC No: TG302
Received 20030227, received in revised form
20030825
|