钛合金板爆炸断离效果的研究  

Study on Explosive Disconnection Effect of Titanium Alloy Plate

作　　者：王杰春 王猛[1] 赵盟乔 陈刚 朱宇 WANG Jie-chun;WANG Meng;ZHAO Meng-qiao;CHEN Gang;ZHU Yu(School of Chemical Engineering,Anhui University of Science and Technology,Huainan 232000,China)

机构地区：[1]安徽理工大学化学工程学院,淮南232000

出　　处：《爆破》2024年第2期170-176,共7页Blasting

摘　　要：航空发动机叶片的丢失模拟试验对于机匣包容设计具有重大意义,该试验的难点在于如何控制转子叶片达到允许的最高转速时发生断离。为研究人为断离发动机转子叶片的最佳分离结构,采取爆炸分离的方法,设计了在断离处两侧开Ⅴ型槽下中心开单孔和中心开双孔两种结构TC4钛合金板的静态模拟试验。TC4钛合金板选用规格为100 mm×80 mm×23 mm,采用AUTODYN数值模拟软件进行仿真计算,并结合试验对比两种结构5个方案的板材损伤及附加动能大小。结果表明:方案Ⅱ、Ⅴ未成功断离,方案Ⅲ对样板损伤较大,方案Ⅰ、Ⅳ能较好地分离样板;在相同装药量情况下,双孔结构板材断裂后位移量明显大于两侧开Ⅴ型槽中心开单孔结构的材断裂后位移量。进一步分析得出:Ⅴ型开槽结构可以降低爆炸对板材的损伤,提高炸药能量利用率,降低对板材的附加动能,相较于双孔结构峰值速度降低20%,逸散速度降低40%。研究成果可为探究断离TC4钛合金板最佳结构提供参考。The simulation test of blade loss in an aero engine plays a crucial role in casing containment design.The main challenge lies in controlling the breaking of rotor blades when they reach their maximum allowable speed.To investigate the optimal separation structure for rotor blades with artificial separation,two types of TC4 titanium alloy plates withⅤ-shaped grooves,one with a single hole and another with double holes at the center,were designed using explosive separation method.The selected size for the TC4 titanium alloy plate was 100 mm×80 mm×23 mm.The AUTODYN numerical simulation software's Smoothed Particle Hydrodynamics(SPH)algorithm was employed to conduct simulation calculations.Experimental comparisons were made on the damage and additional kinetic energy caused by five different schemes involving these two structures.Results indicated that schemeⅡandⅤfailed to break off successfully,while schemeⅢresulted in significant damage to the template.On the other hand,schemesⅠandⅣdemonstrated better ability to separate the template.Under identical charge conditions,it was observed that the displacement of double-hole structured plates after fracture was significantly greater than that of single-hole structured plates withⅤ-grooves on both sides.Further analysis revealed that theⅤ-shaped slotted structure could reduce plate damage,enhance explosive energy efficiency,and minimize additional kinetic energy exerted on the plate.Moreover,compared to double-hole structures,this slotted structure also reduced peak speed by 20%and escape speed by 40%.

关 键 词：TC4钛合金板 爆炸断离 仿真计算 SPH 应力集中 

分 类 号：TQ560[化学工程—炸药化工] TG48[金属学及工艺—焊接]