Calcolatrice Sollecitazione Termica Gratuita

Calcola la sollecitazione indotta dalla temperatura.

GPa
1/deg C
deg C

Thermal Stress

192.0 MPa

Free Thermal Strain0.000960 mm/mm

Thermal Stress vs Elastic Modulus (E)

Vedi formula →

Formula

## Thermal Stress in Restrained Members When a material cannot expand or contract freely, temperature changes produce internal stresses. ### Formula **sigma_thermal = E alpha delta_T** where E is the elastic modulus, alpha is the coefficient of linear thermal expansion, and delta_T is the temperature change. Heating a restrained member produces compression; cooling produces tension.

Esempio Risolto

A steel rail (E=200 GPa, alpha=12e-6 /deg C) heated by 80 deg C while fully restrained.

  1. 01Free strain = 12e-6 x 80 = 9.6e-4 = 0.000960
  2. 02Thermal stress = 200,000 MPa x 0.000960 = 192 MPa
  3. 03This is 77% of steel yield (250 MPa), highlighting why expansion joints are critical.