Question

sstructrual analysis

Jan 2, 2020 November 21, 2019 Structural Analysis Student Name: 1. [10 pts] Using the stiffness me The truss and specify if the member in Note: Global displacement vector is A ing the stiffness method, determine the member axial force in member 1 and 2 of y it the member in compression or tension. 0.21552) in. -0.13995) 150k A .. A -- MO - 12 - (1) Analytical Model E = 29,000ks (a) Truss Force in Member 1: _ Force in Member 2:__

Answer 1

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displacement of junction in x and y direnim is to determine assume as 16 tano ax and ay ay tysine - Dy sino-Axceso . Abomax so I 53-13 . Coso-o.6 sino - 0.8 va 192 in 131 12718 2014 - 2foin 240 For = AE (DAB) = 8+29000. (o.com +0.894 ) - 580.00 20x + 773.336 AY faca 6.x29000 (oys = 906.25 by - 192 Fada 8x29000 (-0.69x +0,8AY) = - 580.002 *+773-336 AY - 240 zvuk FAB cose - GASCO - 150K - o isok = PAC + FAB Sino Fassino = - 300k - 6 ap • FAC use eso , inte en and ) 1160.004 AX = 150 ) AX=0.215 in 906.25 A3 +1237.3376ay=-300 =) by=-0.13995 in Now use DX, by inte en 0, 6 to find FAB, ARC, FAD FAB= 580.002 (0.215)+773-336 (-0.13995) = 16047K (Tensile) FAC = go6.25(-0.13995) : 5+126.925 (compressive Foo -590-oir (0.215) + 773.33€(-0.13495 ) =-232.929K (compressivej

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