Critical buckling loads for hydraulic actuating cylinders

Abstract

The object of this thesis is to formulate and verify buckling equations that are applicable for various types of hydraulic actuating cylinders.Particular attention was focused on the variation of these equations for their application to both fluid filled plunger rod and fluid unfilled plunger rod. The equations were formulated based on the moment equations and the differential equations of the simple beam theory. The analysis was made with a consideration of the effect of various types of assumptions that were included in the study. Because of the complexity of the solutions, the computer programming was necessary. The actual dimensions were taken into the solutions and the characteristic result of each solution was plotted for comparison. To verify the analytical approach and results obtained, experiments were performed using an unfilled plunger rod. Satisfactory experimental agreement was obtained.