Optimization Design of Structural Parameters of Casing Mounting Edge of an Aeroderivative Gas Turbine
The performance of the mounting edge of the gas turbine casing modified for aviation was in-fluenced by multiple structural and load parameters.In order to design an optimal mounting edge struc-ture within a given range of structural and load parameters,a structural parameter optimization design method for the mounting edge of the gas turbine casing was proposed.Firstly,this paper adopted the Lat-in hypercube sampling method for experimental design and constructed a simulation case sample space;secondly,the finite element analysis method was used to analyze the influence of structural parameters such as bolt hole center distance,bolt hole diameter and mounting edge thickness,as well as load param-eters such as medium pressure inside the casing,medium temperature and preload of a single bolt,on the characteristics of the mounting edge,including the maximum equivalent elastic stress,average gap of the contact surface and maximum contact pressure of the contact surface;thirdly,a surrogate model for cal-culating the sealing performance of the mounting edge of the gas turbine casing was constructed,and the structural parameters of the mounting edge of the gas turbine casing under given working conditions were optimized;finally,experimental verification was conducted on the optimized design results of the mount-ing edge structure to test its sealing performance and the calculation accuracy of the surrogate model.The results show that the error between the sealing performance of the mounting edge structure calculated based on the surrogate model and the experimental results is within 10%.This method can be used for engineering optimization design and performance evaluation of the mounting edge structure of the gas tur-bine casing modified for aviation.
aeroderivative gas turbinemounting edge of casingsurrogate modelstructural optimiza-tion designLatin hypercube experimental design
NETL
NSTL
万方数据
