CAJ | 학술논문

为了建立相对准确高效且充分考虑弹丸接触力等外加载荷影响的柔性身管模型,通过将虚拟体引入身管系统,提出了一种柔性身管的建模方法,推导了虚拟体在系统中的约束方程和身管的多体动力学方程.以某型履带式自行火炮为例,引入身管的多体模型,获得了在相同射击条件下试验测试数据与仿真计算结果的对比曲线.分析表明,应用该方法构建的柔性身管模型能够描述弹丸接触力等外加载荷的作用,并可以较精确地计算火炮的炮口扰动和身管的弹性振动.
위료건립상대준학고효차충분고필탄환접촉력등외가재하영향적유성신관모형,통과장허의체인입신관계통,제출료일충유성신관적건모방법,추도료허의체재계통중적약속방정화신관적다체동역학방정.이모형리대식자행화포위례,인입신관적다체모형,획득료재상동사격조건하시험측시수거여방진계산결과적대비곡선.분석표명,응용해방법구건적유성신관모형능구묘술탄환접촉력등외가재하적작용,병가이교정학지계산화포적포구우동화신관적탄성진동.
To establish the accurate and efficient flexible barrel model with the influence of external loading taken into consideration,a modelling method of flexible barrel was presented by introducing the virtual substance into the barrel system, and the constraint equation of virtual substance and the multi-body dynamics equation of barrel were derived. Taking a tracked selfpropelled artillery for an example, the multi-body model of the barrel was introduced, and then the comparative curve between the experimental data and the calculation result under the same firing condition was obtained. The comparison shows that the effect of the external loading can be described by this flexible barrel model, such as the bullet contact force. The disturbance of gun muzzle and the elastic vibration of the barrel can be accurately calculated by this model.