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Velocities, Stresses and Vector Bundle Valued Chains

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Abstract

A mathematical framework for the fundamental objects of continuum mechanics is presented. In the geometric setting of general differentiable manifolds, velocity fields over bodies, modeled as sections of a vector bundle W, are generalized using notions of homological integration theory such as flat chains and cochains. The class of bodies includes fractal sets whose irregular boundaries may have infinite measures. Stresses, initially modeled as smooth differential forms valued in the dual of the jet bundle of W, are generalized to cochains represented by L ∞-sections whose weak divergences are also L ∞. The divergence of a stress field, defined in an earlier work, is generalized to apply to stress cochains. The co-divergence of a velocity field is a weak form of the jet extension mapping and it is the counterpart of the boundary operator for real valued flat chains.

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Authors and Affiliations

  1. Department of Mechanical Engineering, Ben-Gurion University, P.O. Box 653, 84105, Beer-Sheva, Israel

    Reuven Segev & Lior Falach

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  1. Reuven Segev
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  2. Lior Falach
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Correspondence to Reuven Segev.

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Segev, R., Falach, L. Velocities, Stresses and Vector Bundle Valued Chains. J Elast 105, 187–206 (2011). https://doi.org/10.1007/s10659-011-9316-7

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  • DOI: https://doi.org/10.1007/s10659-011-9316-7

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