A spring-back reduction of advanced high strength steel grade JIS-SPFC980Y in V-bending die
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Abstract
This research applied the finite element method (FEM) to simulate V-bending process in order to investigates a spring-back reduction method in V-bending of advanced high strength steel (AHSS) through bottoming technique. The material workpiece is AHSS JIS-SPFC980Y grade. The V-bending experiment was used for checking an accuracy on FEM and the result has shown that, the bottoming technique was able to reduce spring-back problem of workpiece after V-bending but it is required high forming force and also the thickness of workpiece would be decreased as follow as the value of bottoming distance. However to define the invalidate value of bottoming distance, moreover not to solve spring-back problem. It maybe occur spring-go on workpiece after V-bending.
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