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 40 mm, E = 200 GPa) sits inside a tube made of aluminium (outer diameter 100 mm, inner diameter 60 mm, E = 70 GPa). Both are 400 mm long and are compressed together between rigid plates by 200 kN. Find the compressive stress σr in the rod.
Find the axial strain ε in the steel bar, in microstrain (µε = 10⁻⁶).
Find the elongation δ of the brass bar under the axial load.
A steel segment (diameter 20 mm, length 600 mm, E = 200 GPa) and a segment made of bronze (diameter 50 mm, length 200 mm, E = 110 GPa) are joined end to end and fixed between two rigid walls. An axial load of 20 kN acts at the joint, towards segment 2. Find the magnitude of the stress σ2 in segment 2.
The stepped bar is fixed at the wall and loaded at its free end. Find the total elongation δ.
Answer key
- 1. σ = 127.3 MPa
- 2. σr = 66.31 MPa
- 3. ε = 212.2 µε
- 4. δ = 7.162 mm
- 5. σ2 = 9.286 MPa
- 6. δ = 3.54 mm
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