Study on mechanical response of booster charge under different loading conditions

DOI:	10.11809/bqzbgcxb2024.04.013
Keywords:	booster; ANSYS/LS DYNA; numerical simulation; influencing factor; mechanical response
Abstract:	Due to the complexity of the mechanical environment in the process of using the booster charge, and the high cost of the related mechanical property test of the booster charge, the environmental conditions are difficult to control, and it is difficult to conduct regular test studies on booster. Therefore, in this paper, the large finite element software ANSYS/LS DYNA was used to carry out simulation calculation, and the acceleration time curve was directly applied to the node corresponding to the charge column sleeve, and the charge column sleeve was equipped with the booster. The viscoelastic plastic constitutive model developed in the secondary development of the charge column was adopted to study the mechanical response of the charge column under different overload environments by applying different acceleration pulses to the charge column sleeve. The results show that the diameter and height of the booster column have an effect on its mechanical response. Under the same overload condition, the smaller the diameter and the higher the height of the booster column, the greater the change rate of axial length and density. The peak value and pulse width of acceleration pulse also have direct influence on the mechanical response of the booster charge column under different overload conditions.
Issue:	Vol. 45 No. 4 (2024)
Published:	2024-04-30
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