Self-weight loading of horizontal hydraulic cylinders with axial load

[摘要] An iterative matrix method is described to determine the deformed shape of a horizontal stepped tube with large axial load, representing a heavy hydraulic cylinder. The method is applicable to both simply supported (pinned-pinned) and clamped-clamped end constraints. The clamped-clamped case is extended to include rotational compliance in the clamps. Using this analysis, radial loads on the piston seals of the cylinder are determined. Comparison is made between the seal loading of a typical large cylinder in pinned-pinned and clamped-clamped configurations, respectively. It is shown that the seal loading can be considerably reduced by the use of the clamped-clamped configuration provided the ends can be well aligned, but that the load is sensitive to angular misalignment.

[发布机构] School of Mechanical and Systems Engineering, Newcastle University, Newcastle upon Tyne; NE1 7RU, United Kingdom^1

[效力级别] 力学 [学科分类] 力学，机械学

[关键词] Angular misalignment;Deformed shape;Hydraulic cylinders;Iterative matrices;Piston seals;Radial loads;Self-weight;Simply supported