Supervisor:
Southwest Ordnance Industry Bureau
Organizer:
Chongqing Ordnance Industry Society
Chongqing University of Technology
Chongqing University of Technology
Design and analysis of the curve groove of the guide rail of a rifle with cased telescoped ammunition
| DOI: | 10.11809/bqzbgcxb2024.06.010 |
| Keywords: | guide rail chamber mechanism; guide rail curve groove; contact force; contact stress |
| Abstract: | In order to study the influence of different curve groove shapes of guide rail on the motion characteristics of the guide rail chamber mechanism and the contact force between the chamber lug and the guide rail curve groove, a medium caliber cased telescoped ammunition rifle was selected as the object. Based on linear, quadratic, cubic, and quintic polynomial functions, four kinds of guide rail curve grooves were designed to establish a three dimensional model of the corresponding guide rail chamber mechanism. Adams was used to establish a virtual prototype model, and Abaqus was used to establish the finite element model of the guide rail chamber mechanism. The corresponding simulations and analyses are conducted. The simulation research results show that when different guide rail curve grooves are used to drive the movable chamber, the up and down speed of the movable chamber, the contact force between the guide rail curve and the lug, and the contact stress of the guide rail curve grooves are obviously different, and the maximum contact stress is mainly distributed at the starting and ending positions of the guide rail curve groove, and that the contact stress of the starting position and end position of the guide rail curve groove is smaller than that of other rail curve grooves when the five degree polynomial function is selected as the guide rail profile curve. |
| Published: | 2024-06-28 |