Analysis on static strength of turbine blades based on multi field coupling

DOI:	10.11809/bqzbgcxb2023.06.020
Keywords:	aircraft engine; turbine blade; thermal fluid solid multi field coupling; static strength calculation; finite element analysis
Abstract:	Turbine blades are one of the most expensive and critical components of an aircraft engine, which work under severe operating conditions such as high alternating loads, extreme temperatures, erosion and corrosion. The thermal fluid solid multi field coupling effects should be considered in the design process of turbine blade static strength to ensure safe operation of turbines and prevent accidents. This study proposes a multi field coupling calculation technique for turbine blades to address the full impacts of thermal, centrifugal and aerodynamic loads on the design of turbine blade static strength. Through the static strength analysis of the given turbine blade, the stress distribution of the turbine blade under the combined effect of thermal, centrifugal and pneumatic load is obtained to determine the location of the turbine blade strength danger point and the maximum equivalent force, which can provide a basis for the fatigue life prediction of turbine blades.
Published:	2023-06-28
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