The Origin of In-plane Stresses in Axially Moving Orthotropic Continua
Kurki, M., Jeronen, J., Saksa, T., & Tuovinen, T. (2016). The Origin of In-plane Stresses in Axially Moving Orthotropic Continua. International Journal of Solids and Structures, 81, 43-62. https://doi.org/10.1016/j.ijsolstr.2015.10.027
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International Journal of Solids and StructuresDate
2016Copyright
© 2016 Elsevier B.V. This is a final draft version of an article whose final and definitive form has been published by Elsevier. Published in this repository with the kind permission of the publisher.
In this paper, we address the problem of the origin of in-plane stresses in continuous, two-dimensional high-speed webs. In the case of thin, slender webs, a typical modeling approach is the application of a stationary in-plane model, without considering the effects of the in-plane velocity field. However, for high-speed webs this approach is insufficient, because it neglects the coupling between the total material velocity and the deformation experienced by the material. By using a mixed Lagrange–Euler approach in model derivation, the solid continuum problem can be transformed into a solid continuum flow problem. Mass conservation in the flow problem, and the behaviour of free edges in the two-dimensional case, are both seen to influence the velocity field. We concentrate on solutions of a steady-state type, and study briefly the coupled nature of material viscoelasticity and transport velocity in one dimension. Analytical solutions of the one-dimensional equation are presented with both elastic and viscoelastic material models. The two-dimensional elastic problem is solved numerically using a nonlinear finite element procedure. An important new fundamental feature of the model is the coupling of the driving velocity field to the deformation of the material, while accounting for small deformations of the free edges. The results indicate that inertial effects produce an additional contribution to elastic contraction in unsupported, free webs.
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PergamonISSN Search the Publication Forum
0020-7683Publication in research information system
https://converis.jyu.fi/converis/portal/detail/Publication/25343852
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