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 80 mm, inner diameter 50 mm, E = 100 GPa). Both are 400 mm long and are compressed together between rigid plates by 250 kN. Find the compressive stress σr in the rod.
Find the elongation δ of the aluminium bar under the axial load.
Find the axial strain ε in the steel bar, in microstrain (µε = 10⁻⁶).
The stepped bar is fixed at the wall and loaded at its free end. Find the total elongation δ.
A steel segment (diameter 40 mm, length 300 mm, E = 200 GPa) and a segment made of aluminium (diameter 60 mm, length 400 mm, E = 70 GPa) are joined end to end and fixed between two rigid walls. An axial load of 50 kN acts at the joint, towards segment 2. Find the magnitude of the stress σ2 in segment 2.
Answer key
- 1. σ = 61.12 MPa
- 2. σr = 111.7 MPa
- 3. δ = 9.663 mm
- 4. ε = 954.9 µε
- 5. δ = 2.437 mm
- 6. σ2 = 6.566 MPa
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