CAJ | 학술논문

为了研究圆柱壳在含铝炸药水下爆炸载荷作用下的响应规律,利用非线性动力学软件AUTODYN计算了3种不同配方含铝炸药的远场冲击波特性,并将计算值与文献实验值进行对比,计算误差能够稳定在5％以内,之后结合ABAQUS程序模拟了含铝炸药冲击载荷作用下水中圆柱壳的动态响应。在30 kg药量下分析比对了圆柱壳体加速度、速度及有效塑性应变的变化规律,随后确定了各炸药致使圆柱壳结构失稳的临界药量,并以PBXW-115为例研究了临界药量作用下的圆柱壳破坏模式。结果表明,AUTODYN与ABAQUS程序的联用,能够有效地模拟圆柱壳在含铝炸药远场冲击波作用下的动态响应；含铝炸药致使圆柱壳单元达到屈曲失效所需药量普遍低于理想炸药RDX。
위료연구원주각재함려작약수하폭작재하작용하적향응규률,이용비선성동역학연건AUTODYN계산료3충불동배방함려작약적원장충격파특성,병장계산치여문헌실험치진행대비,계산오차능구은정재5％이내,지후결합ABAQUS정서모의료함려작약충격재하작용하수중원주각적동태향응。재30 kg약량하분석비대료원주각체가속도、속도급유효소성응변적변화규률,수후학정료각작약치사원주각결구실은적림계약량,병이PBXW-115위례연구료림계약량작용하적원주각파배모식。결과표명,AUTODYN여ABAQUS정서적련용,능구유효지모의원주각재함려작약원장충격파작용하적동태향응；함려작약치사원주각단원체도굴곡실효소수약량보편저우이상작약RDX。
[ ABSTRACT] To study the response of cylindrical shell subjected to underwater blast waves of aluminized explosives, the far-field shock wave characteristics of three different formulations aluminized explosive were calculated with nonlinear dynamics software AUTODYN. The calculated values are compared with the experimental values, and the calculation error can be stable within 5%. Combined with the finite element software ABAQUS, the dynamic response of cylindrical shell subjected to blast waves of aluminized explosives was discussed. With 30kg charge mass, the comparison and analysis were carried out with regard tothe variation of cylindrical shell acceleration, velocity and equivalent plastic strain. Subsequently the critical buckling load of several explosives was identified. With PBXW-115 as an example to contrast the ideal explo-sives RDX, the failure modes of cylindrical shells subjected to the critical loads were researched. The results show that, the combination of AUTODYN program and ABAQUS can simulate the dynamic response of cylindrical shells subjected to blast waves of aluminized explosives effectively;and the desired dose for Aluminized explosives causing cylindrical shell unit to failure strain is generally lower than the ideal explosive RDX.