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Math formatting
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JWock82 committed Nov 8, 2023
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====================
P-:math:`\\Delta` and P-:math:`\\delta` Analysis
P-:math:`\Delta` and P-:math:`\delta` Analysis
====================

When a structure is loaded, it displaces. Once a structure has displaced, the forces act on a geometry that is different than the geometry that was initially analyzed. Secondary forces develop due to eccentricities created by these displacements. These secondary forces are known collectively as P-(U+0394) and P-(U+03B4) effects.

P-(U+0394) effects are secondary forces that develop due to the displacements of nodes in the model, while P-(U+03B4) effects are secondary forces that develop due to member displacements.
P-:math:`\Delta` effects are secondary forces that develop due to the displacements of nodes in the model, while P-(U+03B4) effects are secondary forces that develop due to member displacements.

There are traditionally 2 types of procedures used to run P-(U+0394) analysis:
1. The iterative procedure - A basic analysis is rerun considering the effects of the displaced goemetry, leading to further displacements. These further displacements require further iterations until the displacements either converge or diverge.
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