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Week 8, Question 2: Member AC of the following truss is subjected to a temperature change of +80 °C. Calculate the displacemePart 2 The force in each member: a) NAB = b) NAC = V c) NAD =

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Dy Co,2. 432) Chainje in temp Pnr member AC - +80C 2 DG EA = &1104 kN Ds A 7 CL Caee A Ac : AB- A Co,0) de temine Forre chaye2 joints co-ordinates 3 4 L1 AB 1.99996 AE1 20000 A 1 1 12 AC 1 AE2 28284.3 E 20000 m 2,732 13 1.41421 20000 6 AD AE3 7 3 1 m10000.22 0.25001 -0.433019 1 2 3 4 S 37855 5711 4330.29 7500.1 0433 0.749989 4330.3 200000 3500 17 s00 0s -288000 -216000 -43AS NO EXTERNAL JOINT FORCE 2 32 Q1= 1 37855.5041 2740.78202 X D1 D2 0 Q2= 2 2740.78202 14571.1228 X X D1 2.7E-05 -5.0374E-06displacement at joint A Ax 0.000857 m forces in member 1 0.85699 MM 0.00085699 Ay -0.00016 m 10000.22001 x -0.500011 0.86602

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