To analyze and solve the breakdown of a certain Gatling gun in prototype experiment such as bolt fracture, core seizing and insufficient strength of interface while locking and unlocking, firstly the bolt forces in the lock-unlock process were analyzed; secondly, the dynamic model of Gatling gun system was established by means of multi-body dynamics software and the bolt movement process was calculated; thirdly, the dynamic stress and displacement analysis model was built using the finite element software, and then the stress and displacement curves of the key interface positions in the bolt lock-unlock process were obtained under the fire frequency demand; finally, the fault causes were found out by synthesizing the response characters, stress and displacement nephograms, and the bolt structure was improved which effectively increases shooting reliability and provides the theory basis and test direction for optimizing the bolt assembly.
Key words
Gatling gun /
bolt assembly /
dynamic simulation /
finite element
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References
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