IEVref:113-03-30ID:
Language:enStatus: Standard
Term: second polar moment of area
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Symbol: Ip
Definition: for a plane surface S and a specified axis perpendicular to the plane of the surface, additive scalar quantity equal to the integral I p = S R 2 dA MathType@MTEF@5@5@+= feaagKart1ev2aqatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbbjxAHX garuavP1wzZbItLDhis9wBH5garmWu51MyVXgarqqtubsr4rNCHbGe aGqipG0dh9qqWrVepG0dbbL8F4rqqrVepeea0xe9LqFf0xc9q8qqaq Fn0lXdHiVcFbIOFHK8Feea0dXdar=Jb9hs0dXdHuk9fr=xfr=xfrpe WZqaaeaaciWacmGadaGadeaabaGaaqaaaOqaaiaadMeadaWgaaWcba GaaeyyaaqabaGccqGH9aqpdaWdraqaaiaadkfadaahaaWcbeqaaiaa ikdaaaaabaGaae4uaaqab0Gaey4kIipakiGacsgacaWGbbaaaa@3E8D@ , where R is the distance between a surface element with area dA and the axis

NOTE 1 The second polar moment of area is sometimes given the wrong name "moment of inertia" but should not to be confused with the quantity "moment of inertia".

NOTE 2 The coherent SI unit of second polar moment of area is metre to the power four, m4.


Publication date:2011-04
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Internal notes:2017-06-02: Cleanup - Remove Attached Image 113-03-30en.gif
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