[国立中央研究院工程研究所集刊]第一号·王季同工程研究所

【国立中央研究院工程研究所集刊】第一号 - 王季同工程研究所.pdfACADEMIASINICA MEMOIR OF THENATIONALRESEARCHINSTITUTEOFENGINEERING NUMBERI CONTENTS PAGE NewFormulasforHelical Springs and their Comparisonwith Re-sults of ContemporaryInvestigators Graphical MethodofFinding theIntegrals.yxdx anddx and itsapplications when the-y curve is givenK.T.WANG Fig AA Fig.acting on the spring,which,for a torsion spring is generally zero,the integral of the moment of stress about the center of coil,taking through the same limit,is equal tothe torsionalload,and the deflec-tion angleinradians is equalto the totaldeformationof theinnermosK.T.WANG.and thatforroundwireofdiameterd R+d S(r-R)r√d²-4r²+8Rr-4R² PR= p dr R-dThe equation(3a)for the said strip and wire becomes,when condition holds true, 4xNRS θ= Ehand θ= 4xNRSEd respectively.The authorimproved the formulas forhelical torsion springs merely by employing th
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