# second moment of area

(redirected from Area moment of inertia)

## second moment of area

[¦sek·ənd ¦mō·mənt əv ′er·ē·ə]
(mathematics)
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Studies are needed to determine if rowers who are susceptible to rib stress fractures have a smaller cross-sectional area moment of inertia than individuals who do not have rib stress fractures (1).
Interestingly, the difficulty in computing Area Moment of Inertia for casting shapes is one of the hidden reasons for the design and use of fabrications.
Quick Method for Estimating Area Moment of Inertia from Sketches
Note that Area Moment of Inertia is in the denominator in each relationship, meaning that increased Area Moment of Inertia reduces stress and deflection.
Section Modulus is defined as the Area Moment of Inertia divided by the maximum distance from the center of bending (centroid) to the outermost edge of the casting cross-section.
The equation for Area Moment of Inertia [ILLUSTRATION FOR FIGURE 5 OMITTED] - Although the calculus for an interesting casting cross-section can be very difficult, the relationship expressed between "depth of section" (Y) and "change in cross-sectional area" ([Delta]A) is very simple.
Area Moment of Inertia - Once the engineering sense of structural size and [Y.
The final two factors, the focus of this article, are from engineering mechanics and are Modulus of Elasticity and Section Modulus, an aspect of Area Moment of Inertia.
At marking the area moment of inertia of external diameter [d.
1], necessary for the calculation of area moment of inertia of the neck cross-section.

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