· Técnicas de simulación avanzadas ·
R Baehr *, M Todte * and H Stroppe **.
* University of Magdeburg, Germany, ** Institute of High Technologies and Edu. Germany
67th World Foundry Congress
It is necessary for a design engineer of castings to precisely know the mechanical
properties (yield strength, tensile strength, elongation to fracture,
strain hardening exponent and so on) of every part of the casting. These
are very closely connected to the locally very different cooling- and solidification
preconditions of the melt. Estimating strength properties through all
the varying characteristics of the cast structure (dendrite structure, morphology
of pores, eutectic phases, residual stresses and so forth) via numeric
simulation is yet an unsolved task of great theoretical and practical
importance.
The introduced research results have created a possibility to already predict
achievable properties of the casting during the construction phase. By
taking the primary simulation results and calculating their mechanical
properties and quality index, several production techniques, casting alloys
and geometrical variants of castings will virtually be analyzed on a computer.
Results of own analyses will be referred to in this article.
