Axial stress & strain worksheet with answers

Free printable Axial stress & strain worksheet: 6 problems from easy to exam level, with an answer key. Print it or save it as a PDF.

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1.Easy
Ø 30 mm0.5 mP = 90 kN

A solid round bar carries an axial tensile load P. Find the normal stress σ in the bar.

P = 90 kNd = 30 mm
σ = MPa
2.Easy
200 kNØ4070 GPaØ100/60400 mmσr​ = ?

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.

P = 200 kNrod: Ø40 mm, E = 200 GPatube: Ø100/Ø60 mm, E = 70 GPaL = 400 mm
σr = MPa
3.Medium
Ø 30 mmSteel0.5 mP = 30 kN

Find the axial strain ε in the steel bar, in microstrain (µε = 10⁻⁶).

P = 30 kNd = 30 mmL = 0.5 mE = 200 GPa
ε = µε
4.Medium
Ø 20 mmBrass2.5 mP = 90 kN

Find the elongation δ of the brass bar under the axial load.

P = 90 kNd = 20 mmL = 2.5 mE = 100 GPa
δ = mm
5.Hard
20 kN12600 mm200 mmØ20Ø50σ2​ = ?

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.

segment 1: steel, Ø20 mm, 600 mm, E = 200 GPasegment 2: bronze, Ø50 mm, 200 mm, E = 110 GPaP = 20 kN
σ2 = MPa
6.Hard
Ø 25 mmSteel1.5 mØ 12 mmAluminium1 mP = 25 kN

The stepped bar is fixed at the wall and loaded at its free end. Find the total elongation δ.

P = 25 kNsegment 1: Ø25 mm, 1.5 m, steel (E = 200 GPa)segment 2: Ø12 mm, 1 m, aluminium (E = 70 GPa)
δ = mm

Answer key

  1. 1. σ = 127.3 MPa
  2. 2. σr = 66.31 MPa
  3. 3. ε = 212.2 µε
  4. 4. δ = 7.162 mm
  5. 5. σ2 = 9.286 MPa
  6. 6. δ = 3.54 mm

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