WSEAS Transactions on Mathematics
Print ISSN: 1109-2769, E-ISSN: 2224-2880
Volume 15, 2016
Regression Analysis of Octal Rings as Mechanical Force Transducers
Authors: ,
Abstract: This paper presents analytical approach for octal rings as mechanical force transducers. The work first analyzes the characteristics of octal rings as mechanical force transducers, using a finite element model of the ring to determine its state of strain upon the application of load. It also correlates correlate ring design parameters and performance measures using an L9 orthogonal array of finite element simulations. Design parameters include height, thickness, width, and edge curvature. Performance measures include sensitivity and stiffness. Model simulation results showed considerable variation in strain along ring face with considerable difference in maximum values between tensile and compressive strains. Also, revealed a region of a relatively large tensile strain within the ring not addressed in the literature. The relation between strain gauge length and average strain revealed an optimal gauge length that improves ring performance. Moreover, simulation results showed that increasing ring height and decreasing its thickness increases its sensitivity and decreases its stiffness. Finally, results of the regression analysis indicated that there is enough statistical evidence to say that the parameters, height and thickness, influences the stiffness response and the parameters, height, thickness, and width, influences the sensitivity response.
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Keywords: Octal rings, strain gauge, average strain, sensitivity, stiffness, force transducer, regression analysis
Pages: 398-406
WSEAS Transactions on Mathematics, ISSN / E-ISSN: 1109-2769 / 2224-2880, Volume 15, 2016, Art. #37