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Erschienen in:
2013 | OriginalPaper | Buchkapitel
Cap Models
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Elastic materials often exhibit a linear stress-strain response, but a nonlinear response does not necessarily imply inelastic behavior. The definition of an elastic material is quite broad: if it stores but does not dissipate energy, and if it returns to its undeformed shape when the loads are removed, then the material is elastic. Nonlinear elastic behavior could be due to the elastic parameters being intrinsically dependent on the state of stress (material nonlinearity), or to the large deformation that developed in the specimen during testing (geometric nonlinearity).