Reliability Analysis Of Coordinator For Automatic Loading System Of A Gun

This dissertation is aimed to analyze the reliability of an important mechanism belonging to an automatic loading system which is in the context of a basic research thoroughly by using the method of multi-body dynamics simulation. Analyze the existing reliability problem and predict the reliability risks that may exist in the coordinator component of the automatic loading system with the combination of tracking, observing and recording the produce, assembly and adjust process of the real test prototype and knowing the basic working principle thoroughly.It’s important to analyze the dynamic structural strength reliability of the coordinator because the motion of the coordinator is large range motion with characteristics of high-speed and overload. The method of rigid-flex coupling dynamics simulation which is based on multi-body dynamics and finite element method is used to simulate and analyze the dynamic force status of the coordinator and obtain the dynamic stress distribution under the effect of dynamic force so that the dynamic structural strength reliability can be derived. Propose optimization solutions to enhance the structural strength reliability of the coordinator with the consideration of three aspects. They are control method, structural optimization and using both methods together. The simulation results of the optimization solutions shows great improvements of the reliability.The function of the coordinator is that the coordinator accepts the artillery projectile and holds it until the coordinating arm rotates to the coordinating angle then transfer the projectile to the loading machine. So that the coordinator in addition to provide a coordinating action of high-speed and overload, it should also be able to lock and unlock the projectile reliably. Therefore, the analysis of the mechanisms action reliability of the coordinator is very necessary. In this dissertation, a dynamics simulation method based on parametric modeling is used to analyze the mechanisms action reliability consider the parametric randomness by means of the multi-disciplinary optimization software (ISIGHT) and the multi-body dynamics simulation software (ADAMS). From the analysis, the random factor which may affect the reliability is derived. And the analysis can provide a sufficient theoretical basis for the mechanisms optimization and the development of process indicators.