Solution to Problem 262 Thermal Stress

Problem 262
A steel rod is stretched between two rigid walls and carries a tensile load of 5000 N at 20°C. If the allowable stress is not to exceed 130 MPa at -20°C, what is the minimum diameter of the rod? Assume α = 11.7 µm/(m·°C) and E = 200 GPa.
 

Solution 262

 

Comments

Positive po si thermal stress. Ibig sabihin po initial temperature niya ay -20°C? Medyo naguluhan lang po ako dyan.