UNIVERSITY of PLYMOUTH
MECH115: Engineering
Science 1
Tutorial examples: -
Combined Stresses
- In a
particular combined stress situation the stresses acting on a material
element are:-
sx =
70 MN/m²
sy
= -50 MN/m²
=
40 MN/m² .
Determine the principal stresses and the angle at which they act.
[82.1 MN/m² ; - 62.1 MN/m² 16.9º from x
and y]
- In
another particular combined stress situation the stresses acting on a
material element are:-
sx =
70 MN/m²
sy
= 240 MN/m²
=
56 MN/m² .
Determine the principal stresses and the angle at which they act.
[256.8 MN/m² ; 53.2 MN/m² 16.7º from x and
y]
- A
thin cylinder 75 mm ID and 5 mm thick is subjected to an internal pressure
of 5.5 MPa and an axial torque of 1.6 kNm.
Determine the principal stresses and maximum shear stress.
[64.3 MN/m²; -2.5 MN/m²; ± 34.4 MN/m² ]
- A
hollow drive shaft 200 mm OD and 125 mm ID is subject to a bending moment
of 43 kNm and a torque of 65 kNm.
Find the principal stresses and maximum shear stress in the shaft.
[stress calculations] [90.9 MN/m² ; -26.2 MN/m² ; 58.5 MN/m² from
Mohr's circle]
115tut_combined_stresses