The truss shown in the figure supports force Fat node 2. The finite element method is used to analyze this structure using two truss elements as shown.
a. Compute the transformation matrix for elements 1 and 2.
b. Compute the element stiffness matrices for both elements in the global coordinate system.
c. Assemble the element stiffness matrices and force vectors to the structural matrix equation
d. Solve the FE equation after applying the boundary conditions. Write nodal displacements in the global coordinates.
e. Compute stress in element 1. Is it tensile or compressive?
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Introduction To Finite Element Analysis And Design
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