Explicit finite element procedures for the simulation of sheet-metal-forming processes are reviewed. Improved techniques for contact searching and contact force evaluation are then proposed and discussed. In the contact searching algorithm, a new contact territory definition is introduced and only node-to-segment contact pairs are defined, which makes the post-contact searching more efficient and easy to implement. For contact force evaluation, a novel approach is employed to make the simulation of sheet forming processes more accurate. The algorithms are implemented and examined via experiments.

Issue Section:
Technical Papers
Keywords:
Explicit Finite Element, Contact-Impact, Contact Searching, Sheet Forming, metalworking, forming processes, finite element analysis, digital simulation, mechanical contact, impact (mechanical)
Topics:
Algorithms, Blanks, Finite element analysis, Simulation
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Copyright © 2001
 by ASME
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