Problem 4-47/4-48/4-49/ Engineering Mechanics Materials.

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4–47. The support consists of a solid red brass C83400 copper post surrounded by a 304 stainless steel tube. Before the load is applied the gap between these two parts is 1 mm.
Given the dimensions shown, determine the greatest axial load that can be applied to the rigid cap A without causing yielding of any one of the materials.

4–48. The specimen represents a filament-reinforced matrix system made from plastic (matrix) and glass (fiber). If there are n fibers, each having a cross-sectional area of Af
and modulus of Ef
embedded in a matrix having a crosssectional area of Am and modulus of Em, determine the stress in the matrix and each fiber when the force P is
imposed on the specimen.

4–49. The tapered member is fixed connected at its ends Aand B and is subjected to a load
P = 7 kip at x = 30 in.
Determine the reactions at the supports. The material is 2 in. thick and is made from 2014-T6 aluminum.
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Why was the max yield point provided for brass but not for the steel?

sweatybattlefrontplayer
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I think you maybe made a mistake L_brass should be 0.25*m + 10^(-3)*m it is quite small though and is basically a rounding error

johannesnm