来自万雅竞的问题
英语翻译Outwardlydirectednormalstressesarecalledtensionortensilestressesandareconsideredpositive.Shearstressesonapositivefaceofanelementarepositiveiftheyactinthepositivedirectionofareferenceaxis;suchisthecase
英语翻译
Outwardlydirectednormalstressesarecalledtensionortensilestressesandareconsideredpositive.Shearstressesonapositivefaceofanelementarepositiveiftheyactinthepositivedirectionofareferenceaxis;suchisthecaseinFig.2-1a.Thefirstsubscriptofashear-stresscomponentisthecoordinatenormaltotheelementface.Theshear-stresscomponentosparalleltotheaxisofthesecondsubscript.Sincetheelementshownisinstaticequilibrium,thenegativefaceswillhaveshearstressesactingintheoppositedirection;thesearealsoconsideredpositive.
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2020-11-08 07:09