摘要
由于采用传统的基于能量守恒原理的经验方法进行叶片包容性设计很不理想,故应用有限元方法对航空发动机叶片断开甩出撞击机匣的非线性瞬态响应进行了数值分析。模拟了叶片撞击机匣过程,分析了撞击过程中叶片运动轨迹以及叶片和机匣的变形、应力与能量变化。结果表明:有限元方法能较好地模拟航空发动机叶片丢失后撞击机匣的过程,该型航空发动机机匣对叶片不具有包容能力,存在安全隐患。研究结果对于进行航空发动机叶片包容性设计具有重要参考价值。
The traditional experience method based on conversation of energy is not efficient enough to carry out the blade containment design. Then, the finite element method is used to calculate the nonlinear transient response when the aero-engine ring impacted by a disabled blade, simulate the process of impacting and containing, analyze the ring＇s and the blade＇s geometric and energy variety during the process. The result shows that the finite element method can simulate the impacting process, the aero-engine ring can＇t contain the blade, and is very coincident calculate with the test results. This research is valuable in the aero-engine＇s containment design field.
出处
《兵工自动化》
2010年第7期22-24,27,共4页
Ordnance Industry Automation
关键词
叶片
包容性
瞬态响应
数值计算
blade
containment
responses
numerical calculate
