American Journal of Mechanical Engineering
ISSN (Print): 2328-4102 ISSN (Online): 2328-4110 Website: Editor-in-chief: Kambiz Ebrahimi, Dr. SRINIVASA VENKATESHAPPA CHIKKOL
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American Journal of Mechanical Engineering. 2016, 4(7), 312-319
DOI: 10.12691/ajme-4-7-15
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Fatigue Analysis of a Fire Truck Drop Tow Hitch for an O1 Category Water Pump Trailer

Cosmin Roszkos1, , Jozef Bocko1 and Tomáš Kula1

1Faculty of Mechanical Engineering, Technical University of Košice, Košice, Slovakia

Pub. Date: December 17, 2016

Cite this paper:
Cosmin Roszkos, Jozef Bocko and Tomáš Kula. Fatigue Analysis of a Fire Truck Drop Tow Hitch for an O1 Category Water Pump Trailer. American Journal of Mechanical Engineering. 2016; 4(7):312-319. doi: 10.12691/ajme-4-7-15


This paper presents static and fatigue analyses of a fire truck drop tow hitch for an O1 category water pump trailer. In total 4 geometry variants with different features have been analyzed using the FEM. The loading forces have been calculated based on two different weights: the weight of the water pump trailer (the only trailer meant to be towed by the fire truck) and the category O1 gross trailer weight. Two different calculation methods were used: a calculation method recommended by the standard and a calculation method based on the physical breaking tests performed on the fire truck. The results of the performed analyses show the structural differences of the 4 geometry variants. The additional stiffening elements added to the base design have decreased the maximum deformation values, but the maximum stress and strain values have been raised especially in areas where stress concentrators are present.

drop tow hitch fatigue life finite element method loading force equivalent stress

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