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Static Analysis with Large Deformation Problem
This chapter contains a static analysis with large deformation problem. In such an analysis, Structure calculates the deformations, stresses, and strains that occur as a result of a load that produces a large deformation where the model's deformed configuration differs appreciably from its original configuration.
In addition to a set of standard results, Structure also automatically calculates all predefined measures. This list of measures differs based on the analysis type.
mvsd001: Hinged Right-Angle Frame Under a Single Nonconservative Force
 Analysis Type: Large Deformation Analysis Model Type: 3D Reference: Argyris, J.H., and Symeonidis, Sp., "Nonlinear Finite Element Analysis of Elastic Systems Under Nonconservative Loading Natural Formulation Part I. Quasistatic Problems," Computer Methods in Applied Mechanics and Engineering, 26 (1981), pp75–123. Description: A hinged, right-angle frame is constrained in translation at the upper right and lower left corners. It is subjected to a nonconservative downward load 96 cm from the upper right constraint. The load is simulated using a pressure load applied over a small area. Calculate the lateral and vertical displacements at the load application point. Specifications
 Element Type: solid (56) Units: cm, N Dimensions: length: 120width: 3 depth: 2 Material Properties: Mass Density: 0Cost Per Unit Mass: 0Young's Modulus: 7.2e6 Poisson's Ratio: 0.3Thermal Expansion: 0Conductivity: 0 Constraints: at upper right and lower left corners: fixed in translation
 Loads: Location/Magnitude: Distribution: Spatial Variation: vertical 15 kN over 3 cm2 applied at 96 cm from the upper right constraint pressure uniform
Comparison of Results Data
 Displacements at the load application point Theory Structure % Difference Lateral Displacement (x) 3.5 3.88 10% Vertical Displacement (y) 17.0 16.4 3.5% Convergence: SPARMS Stress Error Estimates: 0.3 % Max P: 7 No. Equations: 3912