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Static Analysis

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The stiffness (or displacement-based) method is used in the solution of the structural model.

The following outlines the major analysis steps:

The individual element stiffness matrix [k] is computed in the element local coordinate system.

Based on the element nodal connectivity, [k] is transformed to the global coordinate system and assembled into the global stiffness matrix [K].

The load vector [R] for each load combination is formed.

The equation [K] [U] = [R] is solved for the nodal displacements [U].  

Other structural responses such as internal forces and moments are computed based on the nodal displacements.

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