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 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
200 kNØ20120 GPaØ120/70300 mmσr​ = ?

A steel rod (diameter 20 mm, E = 200 GPa) sits inside a tube made of copper (outer diameter 120 mm, inner diameter 70 mm, E = 120 GPa). Both are 300 mm long and are compressed together between rigid plates by 200 kN. Find the compressive stress σr in the rod.

P = 200 kNrod: Ø20 mm, E = 200 GPatube: Ø120/Ø70 mm, E = 120 GPaL = 300 mm
σr = MPa
3.Medium
Ø 12 mmAluminium1 mP = 115 kN

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

P = 115 kNd = 12 mmL = 1 mE = 70 GPa
δ = mm
4.Medium
100 kNØ4070 GPaØ80/60400 mmδ = ?

A steel rod (diameter 40 mm, E = 200 GPa) sits inside a tube made of aluminium (outer diameter 80 mm, inner diameter 60 mm, E = 70 GPa). Both are 400 mm long and are compressed together between rigid plates by 100 kN. Find the shortening δ.

P = 100 kNrod: Ø40 mm, E = 200 GPatube: Ø80/Ø60 mm, E = 70 GPaL = 400 mm
δ = mm
5.Hard
Ø 40 mmCopper1 mØ 12 mmBrass0.5 mP = 65 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 = 65 kNsegment 1: Ø40 mm, 1 m, copper (E = 117 GPa)segment 2: Ø12 mm, 0.5 m, brass (E = 100 GPa)
σmax = MPa
6.Hard
Ø 35 mmBrass0.5 mØ 20 mmBrass2 mP = 75 kN

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

P = 75 kNsegment 1: Ø35 mm, 0.5 m, brass (E = 100 GPa)segment 2: Ø20 mm, 2 m, brass (E = 100 GPa)
δ = mm

Answer key

  1. 1. σ = 1464 MPa
  2. 2. σr = 41.75 MPa
  3. 3. δ = 14.53 mm
  4. 4. δ = 0.0987 mm
  5. 5. σmax = 574.7 MPa
  6. 6. δ = 5.164 mm

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