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DanMarotta12-Amethyst
12-Amethyst
October 19, 2010
Solved

Finding Centroids

  • October 19, 2010
  • 4 replies
  • 19929 views

Using Mathcad to find the centroid location of general shapes.

How'd he do? Would you take a different approach in finding centroids?

Best answer by f.kohlhepp

Your IT dept may have blocked you from accessing the YouTube site.

They have.

But centroids 'R Us:

4 replies

F
f.kohlhepp1-Visitor
1-Visitor
October 19, 2010

BostonDan wrote:

Using Mathcad to find the centroid location of general shapes.

How'd he do? Would you take a different approach in finding centroids?

Tough to say.

Video??

M
MikeArmstrong1-Visitor
1-Visitor
October 19, 2010

Do you want a worksheet as an example?

Mike

BTW - will the example worksheet be available to download?

D
DanMarotta12-AmethystAuthor
12-Amethyst
October 19, 2010

Up to you Mike on whether you want to post a worksheet example. I haven't seen anything on the forums about centroids

You'll have to ask the author. This video I pulled from YouTube.

M
MikeArmstrong1-Visitor
1-Visitor
October 19, 2010

A slightly different approach as the attached sheet calculates a composite centroid in order to calculate the bending stress generated in the jack, might be worth a glance though.

Mike

M
MJG1-Visitor
1-Visitor
October 20, 2010

The approach looks good to me. I am a little disappointed, however, that units were not used in the example. It's good that he's solving by integration rather than just teaching to look up equations from a book, but the numbers have no meaning without units.

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MikeArmstrong1-Visitor
1-Visitor
October 20, 2010

Dan,

Its a good example but not very practical. He doesn't explain how he gets the curve function f(x) and for the second example he just makes a curve up. Unless I'm wrong this method can only be used if the curve function is given.

Mike

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RichardJ19-Tanzanite
19-Tanzanite
October 20, 2010
Its a good example but not very practical. He doesn't explain how he gets the curve function f(x) and for the second example he just makes a curve up. Unless I'm wrong this method can only be used if the curve function is given.

Follow Fred's example, and use interpolation to generate the function. Using the closed spline from Tom's spline routines may be a better choice than linterp in some cases though.

M
MikeArmstrong1-Visitor
1-Visitor
October 20, 2010

Cheers.

Mike

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