How to define a I section,T section and square sections in MATLAB and calculate their centroid and moment of Inertia??

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Narendra Pyla 2015-9-15

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评论： Narendra Pyla 2015-9-16

The user should input how to give the section and for that calculate we must write a code to calculate the Centroid and Moment of Inertia.

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Walter Roberson 2015-9-15

What information is the user to be asked to provide?

Narendra Pyla 2015-9-15

Means that the user must define different types of section( like I section, T section circular and elliptical ),so how to input those sections and calculate centroid and moment of inertia for those.

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Answer 1

Luc Rébillout 2015-9-15

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编辑：Luc Rébillout 2015-9-15

I guess you'd have to provide the [x,y] array of vertices of your shape and then create a matrix out of it which is 1 inside and 0 outside (you can use inpolygon)

Then you can use the regionprops function which can provide a lot information such as the Centroid.

By moment of inertia I guess you mean the second moment of area. Here's the formula for a given polygon.