Plane stress problems using hysteretic rigid body spring network models
In this work, a discrete numerical scheme is presented capable of modeling the hysteretic behavior of 2D structures. Rigid Body Spring Network (RBSN) models that were first proposed by Kawai (Nucl Eng Des 48(1):29–207, 1978 ) are extended to account for hysteretic elastoplastic behavior. Discretizat...
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Veröffentlicht in: | Computational particle mechanics 2017-10, Vol.4 (4), p.429-439 |
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Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | In this work, a discrete numerical scheme is presented capable of modeling the hysteretic behavior of 2D structures. Rigid Body Spring Network (RBSN) models that were first proposed by Kawai (Nucl Eng Des 48(1):29–207,
1978
) are extended to account for hysteretic elastoplastic behavior. Discretization is based on Voronoi tessellation, as proposed specifically for RBSN models to ensure uniformity. As a result, the structure is discretized into convex polygons that form the discrete rigid bodies of the model. These are connected with three zero length, i.e., single-node springs in the middle of their common facets. The springs follow the smooth hysteretic Bouc–Wen model which efficiently incorporates classical plasticity with no direct reference to a yield surface. Numerical results for both static and dynamic loadings are presented, which validate the proposed simplified spring-mass formulation. In addition, they verify the model’s applicability on determining primarily the displacement field and plastic zones compared to the standard elastoplastic finite element method. |
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ISSN: | 2196-4378 2196-4386 |
DOI: | 10.1007/s40571-016-0128-1 |