Question: A steel bar ABO ( E = 2 0 7 GPa, G = 7 9 . 3 GPa receives a force F = 1 0

A steel bar ABO (E=207GPa,G=79.3GPa receives a force F=100N at point A in the positive z-direction. Use the Castigliano's theorem method to find the deflection of point A in the z-direction. The effects of shear force and tension are negligible. (7 marks)
For a cylindrical rod, I=d464,J=d432
A steel bar ABO ( E = 2 0 7 GPa, G = 7 9 . 3 GPa

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