Physical and mathematical models for the perforation of a projectile in a target are established with the assumption that the target is half-infinite in size and made of hard soil or concrete, and that the angle of fall is form 0 ° to 90 °. 建立了侵彻弹以任意姿态侵彻半无限混凝土目标介质时的物理和数学模型。
Dynamic Impact Analysis of a Projectile/ Fuze System Impacting Against a Half-Infinite Target with a Small Angle of Fall 弹引系统以极大着角碰击半无限目标时的动力分析
The results showed that, the cutting seam depth is used as vertex of the fall Angle, with the increased depth of the cut seam, the fall Angle gradually reduces. 模拟结果表明,以切缝深度作为垮落角顶点,随着切缝深度的增加,垮落角逐渐减小。
In traditional quantum-inspired evolutionary algorithm ( QEA), quantum rotate gate is used to update the quantum population. However, the choice of rotate angle is also discrete, not continuous, which makes the search of the problem easy to fall into local optimum. 在量子进化计算中,用量子旋转门来更新种群,但是旋转角度的选择是离散,不连续的,使问题的搜索容易陷入局部最优。
With the increase of fouling deposition thickness, the field synergy angle increased, proved that the heat exchange performance of the thread spiral pipes fall off. 随着污垢沉积厚度的增加,场协同角在不断增大,螺纹螺旋管的换热性能在下降。