Edge Contact Forces and Quasi-Balanced Power

Francesco Dell'Isola (1, 2) , Pierre Seppecher (3)

1 Dipartimento di Ingegneria Strutturale e Geotecnica
2 Laboratorio Strutture e Materiali Intelligenti - Fondazione Tullio Levi-Civita
3 IMATH - Institut de Mathématiques de Toulon - EA 2134

We consider continuous media in which contact edge forces are present. Introducing the notion of quasi-balanced contact force distribution, we are able to prove the conjectures by Noll and Virga [1] concerning the representation of contact edge forces. We generalize the Hamel–Noll theorem on the Cauchy postulate. Then we adapt the celebrated tetrahedron construction of Cauchy in order to obtain a representation theorem for stress states. In fact, we show that two stress tensors of order two and three are necessary for such a representation. Moreover we find the relationship between the notion of interstitial working introduced by Dunn and Serrin [2] and the notion of contact edge force

Domaines: Mécanique [physics.med-ph]

Francesco Dell'Isola, Pierre Seppecher. Edge Contact Forces and Quasi-Balanced Power. Meccanica, 1997, pp.20. ⟨hal-00494641v2⟩