Determination of effect of elliptic notches and grooves on stress concentration factors on notched bar in tension and grooved shaft under torsion

作者: Rumman Ul Ahsan , Protyasha Prachurja , Abu Raihan Mohammad Ali , Mohammad Arif Hasan Mamun

DOI: 10.3329/JNAME.V10I1.13675

关键词: Stress distributionMathematicsTorsion (mechanics)Elliptic geometryStructural engineeringEllipsevon Mises yield criterionFinite element methodStress concentration

摘要: Stress concentration of structural members can be reduced considerably by the judicious choice elliptic shaped stress raisers like notch and groove. Substantial effort has been given numerous researchers to accurately measure effect such raisers, particularly semicircular An exhaustive bibliographical study proved that there is scope investigate further establish an alternative design criteria; concerning geometry. Computational method, primarily finite element method used analyze models under loading. This paper suggests use a modified shape which gives less when compared The ratio minor major half axes ellipse should between 0.3 0.4. introduction shoulder with groove even reduces concentration. results obtained from FEM analysis propose optimal values geometrical parameters. represents not only precise view distribution, but also develop charts designer for practical purposes. DOI: http://dx.doi.org/10.3329/jname.v10i1.13675

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