Question: DRAW FBD TO SHOW INTERNAL FORCE FOR SOLVING QUESTIONS Problem 4-2 A bar ABC of length L consists of two parts of equal lengths but

DRAW FBD TO SHOW INTERNAL FORCE FOR SOLVING QUESTIONS

Problem 4-2 A bar ABC of length L consists of two parts of equal lengths but different diameters. Segment AB has diameter d1=240mm, and segment BC has diameter d2=120mm. Both segments have length L/2=1.0m. A longitudinal hole of diameter d is drilled through segment AB for one-half of its length (distance L/4=0.5m ). The bar is made of plastic having modulus of elasticity E=2.0GPa. Compressive loads P=120kN act at the ends of the bar. (a) If the shortening of the bar is limited to 10mm, what is the maximum allowable diameter dmax of the hole? (b)what is the maximum mormal stress in bar ABC

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