TECHNICAL SCIENCES Abbrev.: Tech. Sc., Pap. And Rep., No 9, Y. 2006 ANALYSIS OF STRESS AND STRAIN CONCENTRATIONS IN NOTCHED MEMBERS MADE OF ALLOYS D16 AND 1460 Lucjan nie¿ek 1 , Jerzy Ma‡achowski 2 1 Institute of Machine Design 2 Institute of Materials Science and Applied Mechanics Faculty of Mechanics Military University of Technology K e y w o r d s: notch effect, stress concentration, aluminum alloys. Abstract The aim of the study was to present findings on the effect of the presence of a notch upon stress and strain concentrations in model members for aeronautical structures, made of selected aluminum alloys, i.e. D16 and 1460. Flat specimens with centrally positioned holes and side cuts, loaded with some bending moment of stress ratio R = 1, were tested. Specialized FEM software (MSC.Patran and MSC.Nastran) was applied to examine stress and strain distributions. The findings are presented in the form of s max and e max values as well as functions of the following factors: a s , a e , and a k , computed on the grounds of these values for both different distances from the bottom of the notch and assumed levels of load put on the specimens. Theoretical analysis was supplemented with experimental investigations into the microstructure of fatigue-fracture surfaces in the area of crack initiation and in that of fatigue of a propagating crack. ANALIZA SPI˚TRZENIA NAPR˚flENIA I ODKSZTA£CENIA W ELEMENTACH Z KARBEM WYKONANYCH ZE STOPÓW D16 I 1460 Lucjan nie¿ek 1 , Jerzy Ma‡achowsk i2 1 Istytut Budowy Maszyn 2 Instytut Mechaniki Technicznej i Materia‡oznawstwa Wydzia‡ Mechaniczny Wojskowa Akademia Techniczna S ‡ o w a k l u c z o w e: dzia‡anie karbu, spiŒtrzenie naprŒ¿enia, stopy aluminium.
ANALYSIS OF STRESS AND STRAIN CONCENTRATIONS IN NOTCHED MEMBERS MADE OF ALLOYS D16 AND 1460
May 28, 2023
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