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 10 mm1.5 mP = 115 kN

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

P = 115 kNd = 10 mm
σ = MPa
2.Easy
50 kNØ30100 GPaØ120/50300 mmσr​ = ?

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.

P = 50 kNrod: Ø30 mm, E = 200 GPatube: Ø120/Ø50 mm, E = 100 GPaL = 300 mm
σr = MPa
3.Medium
Ø 10 mmBrass0.5 mP = 60 kN

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

P = 60 kNd = 10 mmL = 0.5 mE = 100 GPa
δ = mm
4.Medium
Ø 16 mmBrass1 mP = 70 kN

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

P = 70 kNd = 16 mmL = 1 mE = 100 GPa
ε = µε
5.Hard
Ø 30 mmAluminium1.5 mØ 12 mmAluminium0.5 mP = 70 kN

The stepped bar is fixed at the wall and loaded at its free end. Find the largest normal stress σmax in the bar.

P = 70 kNsegment 1: Ø30 mm, 1.5 m, aluminium (E = 70 GPa)segment 2: Ø12 mm, 0.5 m, aluminium (E = 70 GPa)
σmax = MPa
6.Hard
30 kN12600 mm500 mmØ40Ø50σ2​ = ?

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.

segment 1: steel, Ø40 mm, 600 mm, E = 200 GPasegment 2: aluminium, Ø50 mm, 500 mm, E = 70 GPaP = 30 kN
σ2 = MPa

Answer key

  1. 1. σ = 1464 MPa
  2. 2. σr = 9.294 MPa
  3. 3. δ = 3.82 mm
  4. 4. ε = 3482 µε
  5. 5. σmax = 618.9 MPa
  6. 6. σ2 = 6.054 MPa

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