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A Design Study in Aluminum Castings -Uplock Support                                          

Feature B - Horizontal Stiffening Rib
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In Feature B, the horizontal stiffening rib increases the section modulus of the wall section, but is not directly loaded.

  • The strength requirement in the wall section is 50 ksi ultimate tensile strength and 36 ksi yield strength.

The rib cross section 1.5 inches high and 0.25 inches thick. The thermal mass is low enough and the strength requirement of 45 ksi UTS do not require a chill block.

Feature B does not need a chill.
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