Question

Question 4 15 pts An axially loaded bearn has a length 118 pm and a square cross section of 1.8 um on one side. Assume the Young's Modulus is 180GPa and the beam is clamped between two immovable ends If a thermal stress of 2,022 develops upon heating the beam. Calculate the temperature rise in degrees centigrade. Assume the temperature coefficient of expansion is 103 x 10°/C

Answer 1

Sol Given L=118 um A = 1.8Mm X 18 MM. E = 188 GPG = 188x10 pa thermal stressa t=2022 MPa = 2022 X 10Pa 1 unit of ffress are not given d = 103810116 let at is the timpreture diffuenu between two we know thermal stress fixed and it given 37 IT = Exat 20 22X10° = 188 x 109 x 103x10 9 at [at= 104.32°c)