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단면 2차 모멘트-직사각형, Second moment of area for rectangular cross section

작성자 Uploader : ezcivil 작성일 Upload Date: 2017-02-27변경일 Update Date: 2017-02-27조회수 View : 1788

The 2nd moment of area, also known as moment of inertia of plane area, area moment of inertia, or second area moment, is a geometrical property of an area which reflects how its points are distributed with regard to an arbitrary axis. The second moment of area is typically denoted with either an I for an axis that lies in the plane or with a J for an axis perpendicular to the plane. In both cases, it is calculated with a multiple integral over the object in question. Its unit of dimension is meters to the fourth power, m^4.

In the field of structural engineering, the second moment of area of the cross-section of a beam is an important property used in the calculation of the beam′s deflection and the calculation of stress caused by a moment applied to the beam.

Consider a rectangle with base b and height h whose centroid is located at the origin. Ix represents the second moment of area with respect to the x-axis; Iy represents the second moment of area with respect to the y-axis; Jz represents the polar moment of inertia with respect to the z-axis.

*** 참고문헌[References] ***

https://en.wikipedia.org/wiki/Second_moment_of_area

Ix = b*h^3 / 12


변수명 Variable	변수값 Value	변 수 설 명 Description of the variable

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현재 위치

단면 2차 모멘트-직사각형, Second moment of area for rectangular cross section

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