Create a conversion table for the temperature range from − 40 ° F to 130 ° F using Excel.

Question

1. Use the unit displacement approach to develop the structural stiffness matrix for the structure shown in Figure 1, assuming that the axial stiffness of all three members are ΑΕ AE AE identical, i.e. (^)₁ = (^)₂ = (^) 3 = 150k/in. Then report the force-displacement matrix 1 L 2 equation that you need to solve to calculate the joint displacements. Partition the matrix equation based on unconstrained and restrained degrees of freedom, and highlight the components Fu, Rr, Au, Ar, Kuu, Kur, Kru and Krr. In this equation, show the constraints on Ar. Note a. All members are axial members so only horizontal DOFs are to be considered. b. Only showing the matrix equation will suffice for the final part. No need to solve for unknown displacements and reactions. However, feel free to compute them 20 k 1 2 20 k 3 3 2 4 L L Figure 1

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Chapter 11, Problem 2P

To determine

Create a conversion table for the temperature range from −40°F to 130°F using Excel.

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1. Use the unit displacement approach to develop the structural stiffness matrix for the structure shown in Figure 1, assuming that the axial stiffness of all three members are ΑΕ AE AE identical, i.e. (^)₁ = (^)₂ = (^) 3 = 150k/in. Then report the force-displacement matrix 1 L 2 equation that you need to solve to calculate the joint displacements. Partition the matrix equation based on unconstrained and restrained degrees of freedom, and highlight the components Fu, Rr, Au, Ar, Kuu, Kur, Kru and Krr. In this equation, show the constraints on Ar. Note a. All members are axial members so only horizontal DOFs are to be considered. b. Only showing the matrix equation will suffice for the final part. No need to solve for unknown displacements and reactions. However, feel free to compute them 20 k 1 2 20 k 3 3 2 4 L L Figure 1

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