Numerical Simulation of Behavior of Weld-Pocket Dies During Extrusion of Thin Walled Solid Sections
Igor Duplancic and Zeljan Lozina, University of Split, Croatia,
Dar Kostovic, Split Croatia, Jere Prgin and Zoran Bracic, TLM Sibenik, Croatia
Track: DIE DESIGN AND TECHNOLOGY - Finite Element Method
ABSTRACT --- Extrusion dies are subjected to fluctuating loads and high temperatures
during one extrusion stroke. Therefore great attention must be paid to ensure that the
tooling set is both strong enough to withstand these loads, and rigid enough to
minimize deflection. This appearance could be very significant in weld-pocket dies for
extrusion of wide thin-walled solid sections. Detailed stress analysis that requires
three-dimensional sophisticated Finite Element Method (FEM) programs should be
involved in weld-pocket dies design. A very important factor in weld-pocket die design
is the shape of the weld pocket. This paper shows the results of numerical simulation
of behavior of various weld-pocket dies during extrusion of thin-walled solid sections.
In this simulation, the shape of the weld pocket was taken as an influence variable.
Results obtained by such simulations could be useful for the die designer.
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