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- Title
Stress Analysis of Muzzle Brake by Using Fluid-Solid Coupled Method.
- Authors
Hong-xia Lei; Zhi-jun Wang; Jun-li Zhao
- Abstract
Although muzzle brake is an important device for guns, its working environment is poor. Originally, muzzle brake was designed to be very large and bulky to satisfy the strength requirement, which caused increase in material resources and weight. Therefore, a new method should be developed for muzzle brake design. In this study, the stress analysis of muzzle brake was made by using finite element analysis based on fluid-solid coupled method to evaluate muzzle brake's reliability. First, a 3D computational domain was constructed to simulate the muzzle flow field, and the Spalart-Allmaras model was utilized for turbulent flow calculation. Second, muzzle brake force was examined in details in the gun firing process, and the figures of pressure distribution on muzzle brake surfaces were obtained. Finally, a loosely fluid-solid coupled method was employed to calculate the stress of the muzzle brake. Results show that the maximum stress is 624.71 MPa, which satisfies the strength requirement. The holes and baffles of each row have different stress values. Compared with that of the other rows along the flow direction, the maximum stress values of the holes and baffles of the second and third rows are larger. What's more, those of the fourth to the sixth rows decrease gradually. The maximum stress points of each row appear at the junction of the holes and the baffles. Thus, this study is meaningful and significant for the design and optimization of muzzle brake.
- Subjects
MECHANICAL stress analysis; MUZZLE-loading firearms; FINITE element method; UNSTEADY flow; MATHEMATICAL optimization
- Publication
Journal of Engineering Science & Technology Review, 2016, Vol 9, Issue 4, p48
- ISSN
1791-2377
- Publication type
Article