Equivalent Plate Structural Modeling (EPSM) computer program.

About this technology

Overview

The Equivalent Plate Structural Modeling (EPSM) computer program analyzes wing-like structures using high-order Legendre polynomials to define displacement systems. A wing, tail or fin component of a structure model is defined by any number of quadrilateral elements each with an upper and lower skin, camber and depth specified. The wing, tail and fin components are attached to each other, or to ground, using stiff springs or rigid links. Static and vibration analyses may be performed, and stress, static displacement, vibration frequencies and vibration modes may be written to files or exported for plotting. Constraints and their sensitivity derivatives may also be computed for subsequent use in structural optimization.