Propagation of hypervelocity impact fragment clouds in pressure gas

Simulation and Modeling Investigation into Catastrophic Front-Side Bursting under Hypervelocity Impact on Pressure Vessels

“…Computation results are consistent very well with experimental results [5] (Tab.2). The critical stress which obtain by "(1)" (ı 1 ) is compared with that which obtain by the Folias (ı 2 ) equation (a longitudinal through-crack in a thin-walled cylinder).…”

“…The initial geometry model is shown in Fig.1. The hypervelocity experiment in [5] were selected as references cases for the numerical simulations. The cylindrical pressure vessels are made of A1 5754 alloy, and the projectiles are made of aluminium.…”

Numerical Simulation of Impact Damage Induced by Orbital Debris on Shielded Wall of Composite Overwrapped Pressure Vessel

“…First, according to Ref. [3], the ballistic limit for honeycomb-core sandwich panels can be estimated using the Whipple shield equation (31) where the parameter S, representing the standoff distance in the original WS equation, is replaced by either the product of twice the honeycomb cell diameter (Dcell), or by the core thickness, whichever is less:…”

“…Further optimization of the shield designs was conducted using hydrocode simulations, as described in the following sections. It should also be noted that, in the case of oblique impacts, equations (31) and 34 Table 5) are represented in terms of rear wall damage in Fig. 18 (a).…”

“…It was found in Ref [64]. that equation(31) was capable of correctly predicting results for only 71% of 750 Al-Al HVI experiments.2. Equations (32) -(34) are only partially applicable for sizing SWS with a stuffing containing KFRP plates, as they were designed for the NASA configuration of an SWS with Kevlar cloth.…”