Deformation Analysis of Railgun Cross –Section

Gildutis, P.; Kačianauskas, Rimantas; Schneider, M.; Stupak, E.; Stonkus, Rimantas

doi:10.5755/j01.mech.18.3.1877

Cited by 5 publications

(4 citation statements)

References 24 publications

(27 reference statements)

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“…This size of a numerical model for mechanical calculations can be solved more comfortable because the finite element size could be hundred times bigger than finite element size of EM numerical model. The finite element size influence for EM launcher construction behaviour was investigated in the paper (Gildutis et al 2012).…”

Section: Analysis Idea and Algorithmmentioning

confidence: 99%

“…The corresponding 3-D FE model was generated using tetrahedral elements. In the case of mechanical modelling, the field gradients distribute uniformly, and no special refinement is necessary (Gildutis et al 2012). In the EM model, the air ambient was necessary for magnetic field distribution calculations and in the mechanical model the air ambient is not necessary, and the bigger model can be built under lowest hardware resources.…”

Section: Finite Element Model Of the Mechanical Modelmentioning

confidence: 99%

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Magnetomechanical study of open-bore two-rail electromagnetic launcher

Račkauskas¹

2018

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Section: Analysis Idea and Algorithmmentioning

confidence: 99%

Section: Finite Element Model Of the Mechanical Modelmentioning

confidence: 99%

Magnetomechanical study of open-bore two-rail electromagnetic launcher

Račkauskas¹

2018

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“…The element size corresponds to the minimal mesh density required to capture a 3-D behavior of the entire railgun structure at acceptable computational expenses. A similar size of elements was used in [11]. The finite element mesh that was used for calculations consists of 26 544 3-D hexahedral elements.…”

Section: Finite Element Discretizationmentioning

confidence: 99%

Structural Mechanics of Railguns With Open Barrels and Elastic Supports: The Influence of Multishot Operation

Stonkus

Račkauskas

Schneider

et al. 2015

IEEE Trans. Plasma Sci.

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The dynamic behavior of the railgun housing including the rails is of great importance for the system performance. The transient loading (magnetic pressure) may have a negative influence on the sliding electrical contact required for this acceleration technology. Therefore, the analysis of the displacement of the inner rail surfaces due to elastic waves is of great importance. The French-German Research Institute of Saint Louis (ISL) is operating several railguns with housings characterized by an open barrel design allowing for innovative diagnostic techniques. The repelling forces between the rails are countered using discrete steel bolts. The rails are mounted to bars made from composite material. In the past, we presented the experimental and numerical findings concerning the dynamic behavior of such railguns in single shot mode. In this paper, we present for the first time 3-D finite element calculations concerning the dynamical behavior of the ISL RApid FIre RAilgun operating in multishot mode. Multishot scenarios with fire rates of 50 Hz are considered and particular attention is paid to the question if the dynamical behavior of the railgun is influenced by preceding shots. IndexTerms-3-D model, finite-element method, multishot, open barrel, railgun, transient dynamics.

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“…The similar size of elements was used as described in paper [9]. Finally, the finite element mesh that was used for calculations consisted of 26544 3D hexahedral elements.…”

Section: The Finite Element Discretizationmentioning

confidence: 99%

Structural mechanics of railguns with open barrels and elastic supports: The influence of multishot operation

Stonkus

Račkauskas

Schneider

et al. 2014

2014 17th International Symposium on Electromagnetic Launch Technology

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The dynamic behavior of the railgun housing including the rails is of great importance for the system performance. The transient loading (magnetic pressure) may have a negative influence on the sliding electrical contact required for this acceleration technology. Therefore, the analysis of the displacement of the inner rail surfaces due to elastic waves is of great importance.The French-German Research Institute of Saint Louis is operating several railguns with housings characterized by an open barrel design allowing for innovative diagnostic techniques. The repelling forces between the rails are countered using discrete steel bolts. The rails are mounted to bars made from composite material. In the past, we presented experimental and numerical findings concerning the dynamic behavior of such railguns in single shot mode. In this work we present for the first time 3D Finite Element calculations concerning the dynamical behavior of the ISL rapid fire railgun RAFIRA operating in multishot mode. Multishot scenarios with fire rates of 50 Hz are considered and particular attention is paid to the question if the dynamical behavior of the railgun is influenced by preceding shots.

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Deformation Analysis of Railgun Cross –Section

Cited by 5 publications

References 24 publications

Magnetomechanical study of open-bore two-rail electromagnetic launcher

Magnetomechanical study of open-bore two-rail electromagnetic launcher

Structural Mechanics of Railguns With Open Barrels and Elastic Supports: The Influence of Multishot Operation

Structural mechanics of railguns with open barrels and elastic supports: The influence of multishot operation

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