국내 최대 기계 및 로봇 연구정보

공학설계D/B

공학설계D/B 게시판 내용
Volume Title	Structures
Volume No	Organisational documents. General data - principal stress strains, yielding, inelastic stress/strain curve, introduction to statistics, Normal distribution. Section constants - shear centre, warping constants, flexural properties, stress distribution in shells under bending.
DATA Title	Determination of the principal stresses and strains in a plane stress field from strain gauge data.
DATA Item	72014
KEYWORD	circle, gauge, measurement, mohr, principal, rosette, strain, stress, gage
ISBN	0 85679 013 3
ABSTRACT	ESDU 72014 gives curves showing the magnitudes and directions of the principal stresses and principal strains as a function of the reading of strain gauge rosettes in equiangular or rectangular layout. The curves for stresses are for Poissonchr(39)s ratio of either 0.29 (for steels) or 0.33 (for aluminium alloys), but the equations on which they are based are included for use with other values. Also given are the relationships between direct stresses, maximum shear stresses and their corresponding strains, and they apply to any material provided they do not interrelate stress and strain; where stress and strain are interrelated the equations apply to elastic isotropic materials. For strain gauges set at any angles, the Mohrchr(39)s circle graphical method is described and illustrated to show how principal strains are obtained.