This paper focuses on the rotor systems with different lengths of blades and stagger angles of 0°and 90°.Using finite element software, a three-dimensional finite element model with blades and the one with simplified quality-intensive blade are established respectively.The Campbell diagram is applied for their critical speed calculations which are compared.The results show that the two critical speed calculations are similar with a very small diffenrence.This simplified method is feasible.and is of great significance to the efficient calculation of the critical speed of the rotor system with blades.
XIAO Qi-lin, WANG Ke-ming, LI Quan-cheng
. On the blade simplification of finite element calculation at rotor critical speed[J]. Journal of Shenyang Aerospace University, 2013
, 30(6)
: 11
-15
.
DOI: 10.3969/j.issn.2095-1248.2013.06.003
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