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Published in:
2015 | OriginalPaper | Chapter
10. Nonlinear Structural Analysis
Authors : Erdogan Madenci, Ibrahim Guven
Published in: The Finite Element Method and Applications in Engineering Using ANSYS®
Publisher: Springer US
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Abstract
The nonlinear load-displacement relationship—the stress-strain relationship with a nonlinear function of stress, strain, and/or time; changes in geometry due to large displacements; irreversible structural behavior upon removal of the external loads; change in boundary conditions such as a change in the contact area and the influence of loading sequence on the behavior of the structure—requires a nonlinear structural analysis. The structural nonlinearities can be classified as geometric nonlinearity, material nonlinearity, and contact or boundary nonlinearity.