根据接触面热量分布计算电枢熔化磨损率

IF 1.3 4区 物理与天体物理 Q3 PHYSICS, FLUIDS & PLASMAS IEEE Transactions on Plasma Science Pub Date : 2024-09-10 DOI:10.1109/TPS.2024.3406713
Anxin Guo;Xiangyu Du;Xuezhi Wang;Shaowei Liu
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引用次数: 0

摘要

电枢与导轨之间的磨损直接影响电枢与导轨的接触状态,进而影响电磁轨道发射器的使用寿命和发射效率。为了研究发射过程中衔铁熔化磨损的规律,提出了衔铁与导轨接触面的热分布模型,并推导出衔铁磨损的瞬态计算模型;为了求解该模型,计算了发射装置的励磁电流、电感梯度和接触电阻,并结合衔铁室的运动特性作了进一步分析。在此基础上,研究了电枢熔化磨损率的变化规律和影响因素,并通过实验方法验证了推导出的计算模型。研究结果表明,电枢磨损率的变化趋势大致可分为快速上升阶段、急剧下降阶段和平稳阶段,最大磨损率约为 0.008;摩擦系数、轨道材料和轨道结构均对电枢磨损率的大小有影响,但不影响电枢磨损率的变化趋势;实验验证的电枢磨损量与理论计算的磨损量仅相差 3.65%。本文建立的模型和分析结果对优化电枢结构、改善电枢与导轨接触性能、确保发射安全具有重要意义。
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Calculation of Armature Melting Wear Rate Based on Contact Surface Heat Distribution
Wear between the armature and the rail directly affects the state of armature–rail contact, which in turn affects the service life and launching efficiency of the electromagnetic rail launcher. In order to investigate the armature melting wear law during the launching process, a heat distribution model on the contact surface of the armature–rail is proposed, and a transient calculation model of armature wear is derived; to solve the model, the excitation current, inductance gradient, and contact resistance of the launcher were calculated and further analyzed with respect to the kinematic characteristics of the armature chamber. On this basis, the change rule of armature melting wear rate and the influencing factors are studied, and the derived calculation model is verified by using the experimental method. The results of this study show that the trend of armature wear rate can be broadly classified into a rapidly increasing phase, a sharply decreasing phase, and a smooth phase, with the maximum wear rate reaching about 0.008; the coefficient of friction, rail material, and rail structure all have an effect on the magnitude of the armature wear rate, but do not affect the trend of the armature wear rate; the experimentally verified armature wear volume differs from the theoretically calculated wear volume by only 3.65%. The model and analysis results established in this article are of great significance for optimizing the armature structure, improving the armature–rail contact performance, and ensuring the launching safety.
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来源期刊
IEEE Transactions on Plasma Science
IEEE Transactions on Plasma Science 物理-物理:流体与等离子体
CiteScore
3.00
自引率
20.00%
发文量
538
审稿时长
3.8 months
期刊介绍: The scope covers all aspects of the theory and application of plasma science. It includes the following areas: magnetohydrodynamics; thermionics and plasma diodes; basic plasma phenomena; gaseous electronics; microwave/plasma interaction; electron, ion, and plasma sources; space plasmas; intense electron and ion beams; laser-plasma interactions; plasma diagnostics; plasma chemistry and processing; solid-state plasmas; plasma heating; plasma for controlled fusion research; high energy density plasmas; industrial/commercial applications of plasma physics; plasma waves and instabilities; and high power microwave and submillimeter wave generation.
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