1918 L.J. Vandeperre, O.O. van Der Biest 体钟 pression for an infinite Weit a laminated ring in diametral com- eibull modulus:(a) elastic loading of the ring, (b)the strength is reached and the most in Fig. 5. Detail of a ring after testing showing the occurrence of in the formation of 2 C-rings of 1 layer thickness, (c) 灬= crack deflection into the graphite interlayers layer fails, (d) the last layer fails, (e) the strength of the outer C ring is reached, (f) the next C-ring fails, (g) the last C-ring fails with E: Y d: displacement of the loading plate(mm) For a C-ring these relations can be derived from the exact solution for a C-ring under end shear (7b) loading: the effect of a concentrated force is only important close to the point where the con centrated force acts on a body (st. Venants princi ple). The solution for the stresses is ri+r Or sine(5a) and the relation between the strain and the displacements F(-(r2+r2) F(—6+ cos e(5c) with Explication of the expressions for the stress [eqn R=(r-r2)+(+r2)ln2) (5)in eqn(7)], followed by substitution of th result in eqn(8)and partial integration leads to the following expression for the displacement in the In order to obtain the resulting displacement, we direction of the radius, ur, and in the direction of used the definitions of the strain the circumference, ue