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首页> 外文会议>International Symposium on Electromagnetic Launch Technology >Simulation and research on 3D gouging model based on Abaqus/Explicit
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Simulation and research on 3D gouging model based on Abaqus/Explicit

机译：基于ABAQUS /明确的3D Guging模型仿真与研究

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Gouges, which have teardrop-shaped patterns, have been observed on rocket sled tracks, in light gas gun barrels, and in the bore of railguns. In railguns, gouging damage can significantly decrease the useful life of rails. The paper aims to establish a simplified 3D gouging model to describe gouging damages in rails. In this model, the gouging was initiated by the use of a hemispherical asperity on the rail surface. The Johnson-Cook constitutive model represents the material models for the armature (AL-2024-T3) and the rail (Copper).Simulations of the armature/rail interactions were conducted using Abaqus/Explicit. Armature impacts with the rail were evaluated using various sling velocities, armature lengths and interface loads. Gouge size mainly depends on armature velocity and length, the higher sling velocity is, the wider gouge will be. Gouge length increases with longer armature, and interface load has litter effects on gouge size. These simulations match results observed in the experiments extremely well.
机译：在火箭吊索轨道上，在轻质气枪桶和轨道孔中，已经观察到具有泪珠状的图案的凿孔。在RailGuns中，刨凿损坏会显着降低铁路的使用寿命。本文旨在建立简化的3D刨刨模型，以描述轨道的灌木损坏。在该模型中，通过在轨道表面上使用半球形而开始刨刨。 Johnson-Cook组成型模型代表了电枢（Al-2024-T3）和轨道（铜）的材料模型。使用ABAQUS /明确进行电枢/轨道相互作用的量度。使用各种吊索速度，电枢长度和界面载荷评估与轨道的电枢冲击。凿尺寸主要取决于电枢速度和长度，倾斜速度较高，较宽的凿孔将是。粗糙度长度随着较长的电枢增加，界面负载对凿粗糙的效果。这些模拟非常好地观察到的结果。

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