摘要
针对高负荷斜流压气机的结构设计需求,引入和完善斜流叶盘的结构效率评估方法,用以协调各种设计要求和优化结构设计.基于提高结构效率的设计思想,提出"C"型和"M"型两种新型斜流叶盘结构方案,并通过平均应力值、振动鲁棒系数和轮缘变形协调系数3项的分析和结构效率系数的对比,论证了新型轮盘结构在减轻质量、提高可靠性和降低叶尖损失等方面的优势.分析结果表明:"M"型叶盘结构方案可使平均应力提高24.7%,质量降低20%,振动响应降低37.9%,轮缘最大变形降低67.6%.
Structural efficiency evaluation method was employed and improved in structural design of high-load mixed-flow compressor to meet the strict requirements and to optimize the bladed disk structure.Two novel structure schemes were put forward named type ＂C＂ and type ＂M＂ to increase the structural efficiency.The key items including average stress,vibration robust coefficient and rim deformation coordination coefficient were calculated,and structural efficiency coefficient was studied and evaluated contrastively.Finally,the advantages of the novel structure schemes are proved including low weight,high reliability and low loss at blade tips.The calculation result shows the ＂M＂ structure scheme could result in that 24.7% increase in average stress,20% decreasing in mass,37.9% decreasing in vibration response and 67.6% decreasing in rim deformation.
出处
《航空动力学报》
EI
CAS
CSCD
北大核心
2013年第4期866-871,共6页
Journal of Aerospace Power
关键词
斜流压气机
结构设计
结构效率
静强度
振动响应
mixed-flow compressor
structural design
structural efficiency
static strength
vibration response
