Solve Problem and Solution Mechanics of Materials

2.14      Both portion of the rod ABC are made of an aluminium for which E = 73 GPa. Knowing that the diameter of portion BC is d = 20 mm, determine the largest force P that can be aplied if σ_all = 160 MPa and the corresponding deflection at point C is not to exceed 4 mm.

Guru Solution

Considering allowable stress σ = 160 x 10⁶ Pa

Portion AB

         

Portion BC

           

Considering allowable deflection d_c = 4 x 10^-3 m

             

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