TY - JOUR
T1 - Strength reliability and parameter sensitivity analysis for airfoil spar structure
AU - Gao, Zongzhan
AU - Liu, Zhiqun
AU - Jiang, Zhifeng
AU - Yue, Zhufeng
PY - 2010/7/20
Y1 - 2010/7/20
N2 - For checking strength of airfoil spar structure, stress distribution is analyzed and the maximum stress and location are obtained by using software MSC NATRAN. Owing to machining deviation and design tolerance, the airfoil spar structure is always with some uncertainties such as material, loading and geometry. The thickness of strip, rib and web for the airfoil spar structure are expressed by base random variables. Due to the performance function of the strength reliability is an implicit one of the base random variables, finite element stress analysis is carried out by using software MSC NASTRAN and PANTRAN. Second order responds surface method is introduced to analyze the reliability of the structure. The parameter sensitivity is also analyzed, which shows that the thickness distribution parameters of web 3, web 4 and the blow strip have great influence on the reliability of structure strength.
AB - For checking strength of airfoil spar structure, stress distribution is analyzed and the maximum stress and location are obtained by using software MSC NATRAN. Owing to machining deviation and design tolerance, the airfoil spar structure is always with some uncertainties such as material, loading and geometry. The thickness of strip, rib and web for the airfoil spar structure are expressed by base random variables. Due to the performance function of the strength reliability is an implicit one of the base random variables, finite element stress analysis is carried out by using software MSC NASTRAN and PANTRAN. Second order responds surface method is introduced to analyze the reliability of the structure. The parameter sensitivity is also analyzed, which shows that the thickness distribution parameters of web 3, web 4 and the blow strip have great influence on the reliability of structure strength.
KW - Airfoil spar
KW - Quadratic responds surface method
KW - Reliability
KW - Sensitivity
UR - http://www.scopus.com/inward/record.url?scp=77955239988&partnerID=8YFLogxK
U2 - 10.3901/JME.2010.14.194
DO - 10.3901/JME.2010.14.194
M3 - 文章
AN - SCOPUS:77955239988
SN - 0577-6686
VL - 46
SP - 194
EP - 198
JO - Jixie Gongcheng Xuebao/Journal of Mechanical Engineering
JF - Jixie Gongcheng Xuebao/Journal of Mechanical Engineering
IS - 14
ER -