Definitions
Physical quantities of tensorial nature arising from terms dual in energy of the Nth gradient of the displacement.
Introduction
When gradients of the displacement higher than the first enter into the deformation energy density of a body (see “Strain Gradient Theories”), a special treatment has to be devoted in order to get the correct form for the boundary conditions, and a variational approach is the most suitable in this connection (see among the others Piola 2014; Germain 1973a,b; Mindlin and Eshel 1968; Mindlin 1965; Washizu 1975; Polizzotto 2001; dell’Isola et al. 2015a, 2016; dell’Isola and Placidi 2012). Indeed, the deformation energy density tells us the ways in which a body can store energy as well as the kinds of external actions that are sustainable by that body. Even if many authors, especially in review report and during discussions after seminars, following...
References
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dell’Isola, F., Corte, A.D., Battista, A. (2018). Generalized Contact Actions. In: Altenbach, H., Öchsner, A. (eds) Encyclopedia of Continuum Mechanics. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-662-53605-6_229-1
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DOI: https://doi.org/10.1007/978-3-662-53605-6_229-1
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