Abstract: The principle of minimum potential energy is used to derive the elastic characteristics for a particular type flapper valve (Fig. 1a). The results show that to obtain adequate predictions of ...

Abstract: An idealization of a cylindrical pressure vessel with end plates fastened by longitudinal bolts is considered. The initial axial preload is restricted to be below the load necessary to begin ...

Abstract: In a previous paper the authors proposed constitutive equations for the analytical description of gelling incompressible materials. This set of equations is used to predict the steady-state ...

Abstract: An appropriate nonlinear formulation of elasticity is reduced through the usual assumptions of bending theory. It is shown that buckling problems for uniform straight columns may be studied, to ...

Abstract: The buckling of drill pipe in the vertical plane for the case of an inclined hole is studied. This is accomplished by performing a stability analysis of a simply supported column lying in ...

Abstract: The maximum steady-state response of a particular linear damped two-degree-of-freedom vibratory system is minimized by determining the optimum damping constant for a single damper. This is ...

Abstract: An analysis of the longitudinal forces and the resulting longitudinal motions of an idealized drill string is presented. The only external force excitation considered occurs at the bit and is ...