Abstract
A continuum mechanical framework for the description of the geometry and kinematics of defects in material structure is proposed. The setting applies to a body manifold of any dimension which is devoid of a Riemannian or a parallelism structure. In addition, both continuous distributions of defects as well as singular distributions are encompassed by the theory. In the general case, the material structure is specified by a de Rham current \(T\) and the associated defects are given by its boundary \(\partial T\). For a motion of defects associated with a family of diffeomorphisms of a material body, it is shown that the rate of change of the distribution of defects is given by the dual of the Lie derivative operator.
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Acknowledgments
This work was partially supported by the Perlstone Center for Aeronautical Engineering Studies and the H. Greenhill Chair for Theoretical and Applied Mechanics at Ben-Gurion University and by the Natural Sciences and Engineering Research Council of Canada.
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Epstein, M., Segev, R. (2015). On the Geometry and Kinematics of Smoothly Distributed and Singular Defects. In: Chen, GQ., Grinfeld, M., Knops, R. (eds) Differential Geometry and Continuum Mechanics. Springer Proceedings in Mathematics & Statistics, vol 137. Springer, Cham. https://doi.org/10.1007/978-3-319-18573-6_7
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