Deflection analysis of a multistage hydraulic cylinder

Abstract

The deflection of a multistage hydraulic cylinder is an important factor which reduces the critical buckling load of the cylinder and it is necessary to limit the deflections in the cylinder to avoid failure before reaching the critical load. In the present research work the deflections in multistage hydraulic cylinders due to self weight, oil weight and frictional moments are analyzed by classical methods and finite element methods and their effect in buckling with hinged and cantilever mounting conditions are studied. Deflection of three stage multistage telescopic hydraulic cylinder used in tippers are computed by a new set of simple programmable equations using the conjugate beam method and verified by ANSYS finite element method. The results are discussed.