국내 최대 기계 및 로봇 연구정보

기술보고서

기술보고서 게시판 내용
타이틀	YEH-STRATTON CRITERION FOR STRESS CONCENTRATIONS ON FIBER-REINFORCED COMPOSITE MATERIALS
저자	Hsien-Yang Yeh and W. Lance Richards
Keyword	Composite materials; Composite research; Failure theory; Macromechanics; Stress concentrations
URL	http://www.dfrc.nasa.gov/DTRS/1996/PDF/H-2141.pdf
보고서번호	NASA-CR-198054
발행년도	1996
출처	NASA Dryden Flight Research Center
ABSTRACT	This study investigated the Yeh-Stratton Failure Criterion with the stress concentrations on fiber-reinforced composites materials under tensile stresses. The Yeh-Stratton Failure Criterion was developed from the initial yielding of materials based on macromechanics. To investigate this criterion, the influence of the materials anisotropic properties and far field loading on the composite materials with central hole and normal crack were studied. Special emphasis was placed on defining the crack tip stress fields and their applications. The study of Yeh-Stratton criterion for damage zone stress fields on fiber-reinforced composites under tensile loading was compared with several fracture criteria; Tsai-Wu Theory, Hoffman Theory, Fischer Theory, and Cowin Theory. Theoretical predictions from these criteria are examined using experimental results.