Coupled Analysis - Steady state thermal and static structural Analysis

A composite bar of 3 different materials, rigidly fixed at both the ends, is subjected to a uniform temp rise of 80oC, In addition, axial loads are applied at two points on the bar as shown. Determine the displacements, stress and support reactions. Material Bronze Aluminum Steel C/S area (mm2) 2400 1200 600 Length(mm) 800 600 400 E (GPa) 83 70 200 𝞪(/oC) 18.9x10-6 23x10-6 11.7x10-6