航空发动机真实机匣的包容性数值仿真  

Numerical simulation of real aero-engine casing containment

作　　者：陈思佳[1] 章定国[2] 段玥晨[2] 廖连芳[3] 

机构地区：[1]浙江大学宁波理工学院,浙江宁波315100 [2]南京理工大学理学院,南京210094 [3]中航工业沈阳发动机设计研究所,沈阳110015

出　　处：《计算机辅助工程》2013年第2期31-35,40,共6页Computer Aided Engineering

摘　　要：为研究某型航空发动机机匣的包容性,以该发动机三级机匣为对象,模拟真实叶片与真实机匣模型的撞击过程,分析发动机转子转速在最低速和最高速下该机匣的包容性.结果表明,在发动机转子达到最高速时机匣出现非包容事件,叶片与机匣撞击产生的部分碎片飞出机匣.对机匣外侧缠绕凯夫拉材料和钛合金材料时机匣的包容性进行仿真和比较,发现凯夫拉材料能很好地吸收部分撞击能量,避免内层机匣出现大的变形,而钛合金材料比凯夫拉材料具有更好的包容性.To study the containment of a lype of aero-engine easing, taking the third stage casing as an example, the impact process of the real blade model and the real easing model is simulated, and then tile easing eomaimnenls are analyzed when the engine rotor rotates at the lowest speed and the highest speed. The rest, hs show that the uncontained failure happens when the engine rotor rotates at the highest speed and parts of the fragments fly out of the casing. Tim containment of casings winded with Kevlar material or Tihmium alloy material is sinmlated and con]pared, and the results show that the Kevlar materical can absorl：） parts of impact energy very. well that can awfid large deformation of the im]er casing, lint tile Titanium alloy material has a better containment than the Kevlar material.

关 键 词：发动机机匣 包容性 有限元 数值模拟 ANSYS I S—DYNA 

分 类 号：V233[航空宇航科学与技术—航空宇航推进理论与工程]