Distributed collaborative extremum response surface method for mechanical dynamic assembly reliability analysis
来源期刊：中南大学学报(英文版)2013年第9期
论文作者：FEI Cheng-wei(费成巍) BAI Guang-chen(白广忱)
文章页码：2414 - 2422
Key words：complex machinery; dynamic assembly reliability (DAR); blade-tip radial running clearance (BTRRC); radial deformation; reliability analysis; distributed collaborative extremum response surface method (DCERSM); multi-object multi- discipline (MOMD)
Abstract: To make the dynamic assembly reliability analysis more effective for complex machinery of multi-object multi-discipline (MOMD), distributed collaborative extremum response surface method (DCERSM) was proposed based on extremum response surface method (ERSM). Firstly, the basic theories of the ERSM and DCERSM were investigated, and the strengths of DCERSM were proved theoretically. Secondly, the mathematical model of the DCERSM was established based upon extremum response surface function (ERSF). Finally, this model was applied to the reliability analysis of blade-tip radial running clearance (BTRRC) of an aeroengine high pressure turbine (HPT) to verify its advantages. The results show that the DCERSM can not only reshape the possibility of the reliability analysis for the complex turbo machinery, but also greatly improve the computational speed, save the computational time and improve the computational efficiency while keeping the accuracy. Thus, the DCERSM is verified to be feasible and effective in the dynamic assembly reliability (DAR) analysis of complex machinery. Moreover, this method offers an useful insight for designing and optimizing the dynamic reliability of complex machinery.
FEI Cheng-wei(费成巍), BAI Guang-chen(白广忱)
(School of Jet Propulsion, Beihang University, Beijing 100191, China)
Abstract:To make the dynamic assembly reliability analysis more effective for complex machinery of multi-object multi-discipline (MOMD), distributed collaborative extremum response surface method (DCERSM) was proposed based on extremum response surface method (ERSM). Firstly, the basic theories of the ERSM and DCERSM were investigated, and the strengths of DCERSM were proved theoretically. Secondly, the mathematical model of the DCERSM was established based upon extremum response surface function (ERSF). Finally, this model was applied to the reliability analysis of blade-tip radial running clearance (BTRRC) of an aeroengine high pressure turbine (HPT) to verify its advantages. The results show that the DCERSM can not only reshape the possibility of the reliability analysis for the complex turbo machinery, but also greatly improve the computational speed, save the computational time and improve the computational efficiency while keeping the accuracy. Thus, the DCERSM is verified to be feasible and effective in the dynamic assembly reliability (DAR) analysis of complex machinery. Moreover, this method offers an useful insight for designing and optimizing the dynamic reliability of complex machinery.
Key words:complex machinery; dynamic assembly reliability (DAR); blade-tip radial running clearance (BTRRC); radial deformation; reliability analysis; distributed collaborative extremum response surface method (DCERSM); multi-object multi- discipline (MOMD)
