| The rail type electromagnetic gun is the most valuable type of electromagnetic gun.Emission in rail vibration will cause the armature of rail oblique impact and may lead to gouge, which is the key factors to limit the electromagnetic launcher’s practical application. In this paper, the two models of the gouging are simulated and the factors which affect the gouging are studied. The main contents are as follows:Taking the electromagnetic launcher as the research object, the transmitting device is simplified as a beam on elastic foundation, establish the finite element model of electromagnetic launchers, further discuss the initial emission produced when the impact load when the rail vibration response, the vibration characteristics of the device were studied by transient dynamic model, discussed the elastic foundation coefficient and the pre-tightening force of electromagnetic emission effect of vibration device. The influence of various parameters on the maximum deflection and vibration guide recovery time discussion.Gouging is equivalent to oblique impact dynamics problems, established a model of impact armature-rail launch process compatibility was studied. Analysis of influence factors of material properties, geometry, the armature and the rail armature speed on the cutting behavior.Finally, the establishment of planing the asperity model and the planing process simulation, the micro convex body model induced by planing process are analyzed and expounded, by further calculation of the micro convex body model micro geometry of the convex particles of plow cut pit sizes were investigated, and the impact velocity of the armature, an armature rail material properties of plane cutting of the pit size were calculated. |
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