某型机库桩基射流成孔仿真研究

为了采用聚能效应快速成孔技术解决某型机库桩基快速成孔的实际问题,基于聚能效应原理,结合桩基成孔需求,设计了聚能药包穿孔方案。在ANSYS workbench的DesignModeler建模平台进行了建模,在AUTODYN环境下对聚能药包快速穿孔方案进行了仿真。仿真结果显示:圆锥型药型罩聚能射流可以形成一定深度的孔,孔口整齐,"长葫芦"形状,为非理想"喇叭口";整个射流形成的孔深为1 279mm,孔径58mm;射流在穿孔过程中出现了"断裂"与"颈缩"现象,说明射流过程产生了振荡而"失稳",一定程度上影响射流穿孔深度,但能够达到工程要求。聚能射流穿孔速度快、质量好,不受地理条件影响,是某型机库桩基快速成孔理想技术,对于军事装备快速部署具有实际意义。

Simulation study of a certain type of hangar foundation jet hole-forming

In order to solve the problem of a certain type of hangar foundation quickly hole-forming by using the shaped charge effect quickly hole-forming technology,the scheme of shaped charge perforation was designed based on the shaped charge effect principle and the hangar foundation hole-forming demand.The model was established on the DesignModeler modeling platform of ANSYS workbench.The shaped charge quickly hole-forming was simulated in the AUTODYN environment.The simulation results showed that the conical charge cover could form a certain depth hole.The orifice was neat.The shape of hole was long gourd shape.The horn mouth shape is not perfect.The hole depth formed by entire jet was 1 279 mm and aperture was 58 mm.The breaking and neck narrowing of shaped charge jet was appeared.It is indicating that the jet process produced oscillation and instability.It affects the jet perforation depth to a certain extent,but can meet the engineering requirements.The shaped charge jet perforation is fast,the hole quality is good and is not affected by geographical conditions.It is a ideal technology for a certain type of hangar foundation quickly hole-forming.It is important for rapid deployment of military equipment.