A solid round bar carries an axial tensile load P. Find the normal stress σ in the bar.
Axial stress & strain worksheet with answers
A steel rod (diameter 30 mm, E = 200 GPa) sits inside a tube made of brass (outer diameter 120 mm, inner diameter 50 mm, E = 100 GPa). Both are 300 mm long and are compressed together between rigid plates by 50 kN. Find the compressive stress σr in the rod.
Find the elongation δ of the brass bar under the axial load.
Find the axial strain ε in the brass bar, in microstrain (µε = 10⁻⁶).
The stepped bar is fixed at the wall and loaded at its free end. Find the largest normal stress σmax in the bar.
A steel segment (diameter 40 mm, length 600 mm, E = 200 GPa) and a segment made of aluminium (diameter 50 mm, length 500 mm, E = 70 GPa) are joined end to end and fixed between two rigid walls. An axial load of 30 kN acts at the joint, towards segment 2. Find the magnitude of the stress σ2 in segment 2.
Answer key
- 1. σ = 1464 MPa
- 2. σr = 9.294 MPa
- 3. δ = 3.82 mm
- 4. ε = 3482 µε
- 5. σmax = 618.9 MPa
- 6. σ2 = 6.054 MPa
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