Application of Virtual Substance in Launch Dynamics Simulation for Self-Propelled Guns

Abstract

To establish more accurate and effective gun dynamics model, which considered fully the coupling influence of projectile and flexible barrel, by introducing the virtual substance into the barrel system, a modeling method for self-propelled guns was presented. Taking a tracked self-propelled gun for an example, combining Ansys and Recurdyn, a multi-body dynamics model was built up. The correlation curves between the experimental data and the simulation result under the same firing conditions were obtained. The results show that the model can describe accurately the dynamic response and the projectile movement, which can provide theoretical references for the further research on gun launch dynamics characteristics.

Strength Analysis of a Naval Gun Bracket in Marine Combat Conditions

“…So during the explicit dynamics analysis the hull inertia force must be considered under the action of the waves, and from the perspective of the strength check, the inertia force should be imposed in limit condition. The limit condition is: angle of swing in Z-axis direction is ± 15 o and the cycle is 4 s ; angle of swing in Y-axis direction is ± 45 o and the cycle is 3 s .Assuming swing of the hull in Z-axis and Y-axis direction as a harmonic vibration, according to the formula 0 cos (2 ) ft…”

“…Nonlinear finite element method is widely used in the gun dynamics simulation. Not only can it accurately consider the flexibility and energy absorption problems of components, but it can also solve non-linear connections problems, especially realize simultaneous calculations of parts dynamics calculations and components strength calculations, which can more accurately calculate the stress and strain state of the components [2] .…”