. Dans-ce-cas, la frontière de la zone plastique X(x) vérifie -l<X(x)<Ys et l'équation (3.65.b) soit : [n(x1xy;]'*=j-* ^r r'=0. r(x(x)) Ii -r

. Dans-cette-formulation, on a remplacé X dans l'équation (3.65.b) par s(n1x1)= x

. Fig, 320. : Domaine de définition de la fonction R(x) o r3

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