摘要
通过对风机叶片失效部位的有限元计算、宏观形貌观察、理化检验、金相组织分析及扫描电镜观察等工作,找到了叶片断裂的原因,采取了改变叶片材料及增加叶片根部厚度避开共振的改进措施。
Through MSC ／NASTRAN analysis on invalid position, macroscopical shape observation, physics and chemistry tests, analysis on metallography organization and scan electric mirror , the real reason why the blade ruptures was found . Measures such as to change the material of blade and increase increase the thickness of blade root, were proposed to avoid the resonance.
出处
《流体机械》
CSCD
北大核心
2007年第8期39-42,共4页
Fluid Machinery
关键词
叶片
断裂分析
振动
改型设计
blade
fracture analysis
vibration
design of retrofit
