Repository logo

Browsing by Subject "cable"

Filter results by typing the first few letters
Now showing 1 - 2 of 2
  • thumbnail.journal.alt
    Item type:Article, Access status: Open Access ,
    A manual winch project with a two way ratchet mechanism
    (Wydawnictwa AGH, 2021) Zagórski, Krzysztof; Stompor, Daniel
    The article describes a solution to an engineering problem concerning the development of a design of a manual winch for off-road vehicle users. The aim of the design is to provide the possibility of extracting an off-road vehicle which is not equipped with an electric winch in the event it becomes stuck in mud or sand. The concept was based on a review of available solutions on the market and an analysis of their advantages and disadvantages. The design was based on calculations performed in accordance with the literature recommendations and FEM strength analyses carried out on a model created using Autodesk Inventor Professional 2020. The developed device is able to provide a pulling force of over 50 kN with an unladen weight of 35 kg, and also provides the possibility of controlled lowering of the load.
  • thumbnail.journal.alt
    Item type:Article, Access status: Open Access ,
    Cable - MR damper system motion in transients
    (Wydawnictwa AGH, 2007) Sapiński, Bogdan; Snamina, Jacek
    The paper addresses certain aspects concerning the interaction between a cable and a magnetorheological (MR) damper. An essential difference between the displacement of the point where the damper is attached and the displacements of other points remote from the damper has been observed during experiments. The results of experimental data imply non-steady state motion of the damper piston. Twice in one period of vibration, for a short time, the harmonic motion turns into the motion with almost constant velocity. After a few seconds, the damper can be blocked. During this time other points, remote from the damper, continue their harmonic motion. These phenomena have a significant meaning in cable - MR damper system motion and have to be taken into account while developing algorithms for MR damper control. A finite element model was formulated for the cable - MR damper system that describes the motion of the system with high precision. The influence of cable flexural stiffness in the neighbourhood of end clamps and damper handle were taken into account. Results of considerations are illustrated by numerical examples in which discussed effects are visible.