电磁轨道发射器电磁结构耦合动态发射过程数值模拟

doi:10.19595/j.cnki.1000-6753.tces.191029

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Abstract Numerical simulation of dynamic launch process of electromagnetic rail launcher is an important theoretical basis for studying interior ballistics. In this paper, taking the simplified electromagnetic rail launcher as the research object, the numerical solution model of transient electromagnetic field is established. The three-dimensional transient electromagnetic force of armature and rail in the dynamic launching process is then obtained. Based on the traditional dynamic response model of electromagnetic rail launcher, the optimization scheme of unconstrained model at both ends and the concept of stiffness anisotropy of elastic support structure are proposed, and the anisotropic constraint model of elastic support is established. On this basis, the electromagnetic and structural coupling interior ballistic simulation model considering the anisotropy of elastic support stiffness is established. The influence of anisotropy of elastic support stiffness on rail dynamic response is studied. The smaller the forward stiffness is, the larger the forward deformation of rail is, and the greater the influence on armature motion is. The forward restraint critical stiffness of the electromagnetic rail launcher is proposed, and the calculation model of the critical stiffness is established, which provides a theoretical basis for the design of the electromagnetic rail launcher.

Key words： Electromagnetic rail launcher electromagnetic field transient dynamic elastic support stiffness electromagnetic structure coupling

Received: 14 August 2019

PACS:

TM359.4

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	Du Peipei
	Lu Junyong
	Feng Junhong
	Tan Sai
	Li Kai
	Li Xiangping

Cite this article:

Du Peipei,Lu Junyong,Feng Junhong等. Numerical Simulation of Dynamic Launching Process of Electromagnetic Rail Launcher with Electromagnetic and Structural Coupling[J]. Transactions of China Electrotechnical Society, 2020, 35(18): 3802-3810.

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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.191029 OR https://dgjsxb.ces-transaction.com/EN/Y2020/V35/I18/3802

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