摘要
A hybrid method is established by combining photoelastic experiment and finite element analysis.The method is used to evaluate contact stress distribution on dry friction interfaces,such as the contact interfaces between shrouds of fan blades and turbine blades.The photoelastic stress frozen experiment method is used to decide the displacement boundary conditions of numerical calculation.Higher accuracy and efficiency of solving problems are improved by the method.Technical difficulty and high cost of experiment are also avoided by the method.Good agreement of the stress distribution by using the hybrid method and experiment is obtained.
为准确而方便地获得诸如航空发动机风扇(转子)叶片凸肩(叶冠)之间的干摩擦接触面上的应力分布,将光测弹性实验方法与有限元数值计算方法结合,建立一种求解接触应力的混合法。用云纹干涉法提取光弹模型接触面的位移作为计算的边界条件,获得接触面上的接触应力该方法提高了计算方法的精度和效率,也克服了单纯用实验方法求解接触应力的困难和花费大的缺点。应用混合法分析了航空发动机带凸肩风扇叶片在高速旋转时凸肩间接触面上的接触应力,比较混合法与光弹性法所得接触应力分布,两者的结果比较一致。
作者
WANG Qin-meng
ZHANG Jin
MA Xiao-qiu
DONG Ben-han
王亲猛;张锦;马晓秋;董本涵(Numerical Simulation Center for Engineering,Beijing Polytechnic University,Beijing 100022,China;Group 405,Beijing University of Aeronautics and Astronautics,Beijing 100083,China;No.11th Institute,China Academy of Launch Vehicle Technology,Beijing 100076,China;Shenyang Aeroengine Research Institute,Shenyang 110015,China)
基金
Youth Foundation of Beijing Polytechnic University
