Question: QUESTION 1 A compressive load P is transmitted through a rigid plate to three magnesium - alloy bars th are identical except that initially the

QUESTION 1
A compressive load P is transmitted through a rigid plate to three magnesium-alloy bars th are identical except that initially the middle bar is slighly shorter than the other bars (Se Figure Q1). The dimensions and properties of the assembly are as follows: Length L=1m, cross-sectional area of each bar A=3000mm2, modulus of alasticity E=45GPa, and the gap s=1mm.
Figure Q1
Questions:
Calculate the load P1 required to close the gap.
Calculate the downward displacement d of the rigid plate when P=400kN.
Calculate the total strain energy U of the three bars when P=400kN.
QUESTION 1 A compressive load P is transmitted

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