국내 최대 기계 및 로봇 연구정보

공학설계D/B

공학설계D/B 게시판 내용
Volume Title	Structures
Volume No	Stress concentrations - plain holes (with/without reinforcement) in bars, plates, rods and tubes, countersunk holes in plates, notches, fillets, lap joints, lugs.
DATA Title	Elastic stress concentration factors. Double radius fillets in shouldered shafts in torsion.
DATA Item	75033
KEYWORD	concentration, fillet, raiser, shaft, stress
ISBN	0 85679 137 7
ABSTRACT	ESDU 75033 gives a method of deriving a double radius fillet that gives a lower stress concentration than a single radius fillet where that is constrained geometrically (either by the height of the shoulder or by the length available along the shaft). A double radius fillet has two maximum stress points, on the circumferential line where it runs out on the shaft, and on the circumferential line where the two radii intersect. The lowest stress concentration occurs when those two maxima are equal and curves defining the geometry for that case are provided for radii ratios of 3 and 6. Also given are curves showing the maximum reduction in stress concentration attainable by use of the double radius fillet over the single radius fillet for the cases when either the height or length of fillet is constrained.