Solve problems 3.4 (element stiffnesses in local coordinates), 3.8 (transformation matrices), 3.14 (structure's stiffness matrix), and...

  

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Solve problems 3.4 (element stiffnesses in local coordinates), 3.8 (transformation matrices), 3.14 (structure's stiffness matrix), and 3.18 (joint displacements, member axial forces, and support reactions) by hand. 4m Fig. P3.4, P3.8, P3.14, P3.18 Problem #2.2 (20 points) Solve the previous problem given that the temperature in element 1 increases by 50 C° and the temperature in element 2 decreases by 25 Cº. The coefficient of thermal expansion is 1.2 x 10-7/Cº. 30° 400 KN Problem #2.3 (40 points) Write a subroutine to be used with the Truss2D.m program to calculate member forces in trusses from the nodal displacements. Solve problem 3.25 using the Truss2D.m program and show that you obtain the correct displacements, reaction forces, and member forces by comparing the results to those found in the text book. 20 ft EA- constant E-200 GPa A=5,000 m² 30 k AN -15 n +15- 15 ft 30k EA consta E=29,000 k Solve problems 3.4 (element stiffnesses in local coordinates), 3.8 (transformation matrices), 3.14 (structure's stiffness matrix), and 3.18 (joint displacements, member axial forces, and support reactions) by hand. 4m Fig. P3.4, P3.8, P3.14, P3.18 Problem #2.2 (20 points) Solve the previous problem given that the temperature in element 1 increases by 50 C° and the temperature in element 2 decreases by 25 Cº. The coefficient of thermal expansion is 1.2 x 10-7/Cº. 30° 400 KN Problem #2.3 (40 points) Write a subroutine to be used with the Truss2D.m program to calculate member forces in trusses from the nodal displacements. Solve problem 3.25 using the Truss2D.m program and show that you obtain the correct displacements, reaction forces, and member forces by comparing the results to those found in the text book. 20 ft EA- constant E-200 GPa A=5,000 m² 30 k AN -15 n +15- 15 ft 30k EA consta E=29,000 k

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Problem 21 34 Element Stiffnesses in Local Coordinates The element stiffness matrix for the truss element in Figure P34 can be expressed as follows K EAL 0 EAL 0 0 12EIL3 ... View the full answer