Research on precision analysis of finite element simplified modeling strategy for turntable framework
CHEN Yanyan
LI Ruixue
JIN Qinghua
ZHAO Kun
WANG Yanzhong
Abstract：[Objective]To rapidly optimize and iterate the stiffness and dynamic characteristics of the main load-bearing frame during the early development stage of a flight simulation turntable,simplified modeling approaches for the turntable frame were investigated.[Methods]Firstly,the typical load-bearing O-shaped frame of a five-axis hardware-in-the-loop simulation turntable was taken as the research object,and consistency verification was carried out between the numerical results of the refined solid mesh model and test data.Using the computed results as the benchmark,finite element simplification modeling strategies for each key detailed structure of the frame were discussed.Finally,the influences of different combinations of simplification strategies on the modal analysis results of the frame were quantitatively analyzed,the rationality of these strategies was examined,and the optimal combination of simplification schemes was determined.[Results]The proposed simplified modeling method reduces the computation time to 1/7 of the original value(from 51 s to less than 7 s)while maintaining the analysis accuracy error within 8％.For the cylindrical structure at the load end and the thin-wall section of the thin-walled cylindrical structure,the simplification scheme with the minimum error is recommended,and the simplification method for stiffeners can be selected according to actual demands.Combining the determined simplification strategies with parametric modeling of the turntable frame effectively improves the design efficiency in the preliminary design phase.
Keywords：Motion simulation turntableFrameworkFinite element methodSimplified modelingPrecision analysis
Publication Date：2026-07-31
Online Publishing Date：2026-09-12(First online date of this platform, not the publication date of the document)
Pages：7( 176-182 )