Simulation on Packing Structure of Propellant Bed

JIANG Shi-ping;RUI Xiao-ting;HONG Jun;WANG Guo-ping;XU Hao

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    Published By: Journal Of Ballistics

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Journal Of Ballistics ›› 2011, Vol. 23 ›› Issue (2) : 19-19.

Simulation on Packing Structure of Propellant Bed

  • JIANG Shi-ping1, RUI Xiao-ting1, HONG Jun2, WANG Guo-ping1, XU Hao1
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Abstract

To research the dynamics of compress and fracture of propellant charge, the dynamic model of initial packing structure of propellant bed was constructed by geometry method. The motion state of propellant grains was described by Newton-Eulerian equations. Neighbor list was established for each grain by Linked Linear List method. The collision detection method of propellant grains was proposed; the contact model for spatial polyhedra was established. The Ray Crossing Method was applied for the collision detection of polyhedra stored in the neighbor list. By these steps, the packing structure of propellant bed under gravity was simulated, and the close-grained structure of propellant bed was acquired. The result provides theoretical foundation for the research of compress and fracture dynamics of gun propellant charge.

Key words

propellant charge / compress and fracture / discrete element method / ray crossing method / neighbor list

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JIANG Shi-ping, RUI Xiao-ting, HONG Jun, WANG Guo-ping, XU Hao. Simulation on Packing Structure of Propellant Bed. Journal Of Ballistics. 2011, 23(2): 19-19

References

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