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| Research on muzzle response for self-propelled antiaircraft gun on the move in consideration of clearance between trunnion and bearing |
| XIE Run，YANG Guo-lai，XU Rui，SUN Quan-zhao，WANG Peng |
| School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China |
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Abstract In order to study the impact of clearance between trunnion and bearing on the muzzle response for antiaircraft gun on the move, a collision computational methodology which was improved base on Lankarani-Nikravesh law was used to describe the constraint relation between trunnion and bearing with different clearances. The flexibility of barrel was considered and the stochastic road irregularities were created by sinusoid superposition method to establish the rigid-flexible coupling dynamic model of self-propelled antiaircraft gun. According to numerical calculation, the muzzle dynamic responses for the gun firing on the move were obtained and compared with the ideal constraint model. The results indicate that the collision between trunnion and bearing have some degree impact on elevation angle and direction angle and the effect on direction angular velocity was most obvious. The results provides basis for grasping the impact rules of backlash nonlinearity for muzzle response of self-propelled antiaircraft gun on the move.
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Received: 08 January 2014
Published: 25 August 2015
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