27-72 ANALIZA COMPUTAŢIONALĂ A TENSIUNILOR MECANICE ÎNTR-O PIESĂ TURNATĂ DIN ALIAJ PE BAZĂ DE ALUMINIU


COMPUTATION ANALYSIS OF MECHANICAL STRESS
IN A ALUMINUM ALLOY CASTINGS
This paper presents a theoretical mechanism for the formation of mechanical stresses in aluminium alloy castings EN AC-Al Si7Mg0,3 and the computational analysis of residual mechanical stresses in case of cylindrical parts, moulded from a mixture of green sand and of cast iron.
We present a comparison of the values mechanical residual stresses obtained by free and braked shrinkage for this alloy casting.
Keywords: mechanical stress, contraction, aluminium alloy, castings, solidification
Cuvinte cheie: stres mecanic, contracție, aliaj de aluminiu, piese turnate, solidificare

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