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Mar 18, 2008
05:06 PM

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Mar 18, 2008
05:06 PM

Projected Area

Hello,

Does anyone know how to go about measuring the projectedarea of two parts that intersecting? In other words I have to parts that intersect and I would like to know the area of that intersection with respect to a plane.

Thanks,

Roxanna

Does anyone know how to go about measuring the projectedarea of two parts that intersecting? In other words I have to parts that intersect and I would like to know the area of that intersection with respect to a plane.

Thanks,

Roxanna

6 REPLIES 6

Mar 18, 2008
05:39 PM

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Mar 18, 2008
05:39 PM

Hi Roxanna,

One way is to use the intersection curve between the two shapes. Firstly make a sketch on the desired projection plane and "use edge" for the intersection curve, making sure it is a complete curve that encloses an area. Secondly highlight that sketch and use Edit/Fill to make a surface. Thirdly use the measure tool to find the area of that new surface. You could merge steps one and two by starting the Fill and making an integral sketch though at this stage I prefer to do it in two steps for better visibility.

Regards, Brent Drysdale

Regards, Brent Drysdale

Mechanical Designer

Tait Electronics Ltd (www.taitworld.com)

New Zealand

Ph. +64 3 358 1093

Roxanna Llinas wrote:

Hello,

Does anyone know how to go about measuring the projectedarea of two parts that intersecting? In other words I have to parts that intersect and I would like to know the area of that intersection with respect to a plane.

Thanks,

Roxanna

One way is to use the intersection curve between the two shapes. Firstly make a sketch on the desired projection plane and "use edge" for the intersection curve, making sure it is a complete curve that encloses an area. Secondly highlight that sketch and use Edit/Fill to make a surface. Thirdly use the measure tool to find the area of that new surface. You could merge steps one and two by starting the Fill and making an integral sketch though at this stage I prefer to do it in two steps for better visibility.

Regards, Brent Drysdale

Regards, Brent Drysdale

Mechanical Designer

Tait Electronics Ltd (www.taitworld.com)

New Zealand

Ph. +64 3 358 1093

Roxanna Llinas wrote:

Hello,

Does anyone know how to go about measuring the projectedarea of two parts that intersecting? In other words I have to parts that intersect and I would like to know the area of that intersection with respect to a plane.

Thanks,

Roxanna

Mar 18, 2008
05:51 PM

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Mar 18, 2008
05:51 PM

Hi Roxanna,

I left out from my previous message how to get the intersection curve (sending this just in case you do not already know how).

Make a surface feature of the each of the whole parts (Select surface geometry on the part and RMB to get "solid surfaces" or pick it from the top of the model tree. Do the Ctrl C, Ctrl V thing to get the surface copy)

Once both parts have external surfaces then use the filter to select quilts and select both part quilts. Use Edit/Intersect to make the intersection curve. I think you can make this as an assembly feature but if not then make it in one of your parts. (There may be another way of getting the intersection curve such as possibly through the analysis interference but I haven't tried that).

The rest is as per my first e-mail.

One way is to use the intersection curve between the two shapes. Firstly make a sketch on the desired projection plane and "use edge" for the intersection curve, making sure it is a complete curve that encloses an area. Secondly highlight that sketch and use Edit/Fill to make a surface. Thirdly use the measure tool to find the area of that new surface. You could merge steps one and two by starting the Fill and making an integral sketch though at this stage I prefer to do it in two steps for better visibility.

Hope this helps.

Regards, Brent Drysdale

Regards, Brent Drysdale

Mechanical Designer

Tait Electronics Ltd (www.taitworld.com)

New Zealand

Ph. +64 3 358 1093

Roxanna Llinas wrote:

Hello,

Does anyone know how to go about measuring the projectedarea of two parts that intersecting? In other words I have to parts that intersect and I would like to know the area of that intersection with respect to a plane.

Thanks,

Roxanna

I left out from my previous message how to get the intersection curve (sending this just in case you do not already know how).

Make a surface feature of the each of the whole parts (Select surface geometry on the part and RMB to get "solid surfaces" or pick it from the top of the model tree. Do the Ctrl C, Ctrl V thing to get the surface copy)

Once both parts have external surfaces then use the filter to select quilts and select both part quilts. Use Edit/Intersect to make the intersection curve. I think you can make this as an assembly feature but if not then make it in one of your parts. (There may be another way of getting the intersection curve such as possibly through the analysis interference but I haven't tried that).

The rest is as per my first e-mail.

One way is to use the intersection curve between the two shapes. Firstly make a sketch on the desired projection plane and "use edge" for the intersection curve, making sure it is a complete curve that encloses an area. Secondly highlight that sketch and use Edit/Fill to make a surface. Thirdly use the measure tool to find the area of that new surface. You could merge steps one and two by starting the Fill and making an integral sketch though at this stage I prefer to do it in two steps for better visibility.

Hope this helps.

Regards, Brent Drysdale

Regards, Brent Drysdale

Mechanical Designer

Tait Electronics Ltd (www.taitworld.com)

New Zealand

Ph. +64 3 358 1093

Roxanna Llinas wrote:

Hello,

Does anyone know how to go about measuring the projectedarea of two parts that intersecting? In other words I have to parts that intersect and I would like to know the area of that intersection with respect to a plane.

Thanks,

Roxanna

Mar 19, 2008
07:36 AM

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Mar 19, 2008
07:36 AM

How about merging the two parts into one to create a part that is only

the intersection part. Then you can use the silhouette function of trim

on copied solid surface to create surface edges relative to the plane.

Then you can use edge in a sketch to create a flat surface, and then

measure the area of that surface...

Yes, I know, a bit involved, but this should work... You might have to

copy surfaces and intersect them to create the part that is only the

intersection... I have a short list of steps and sample part for the

silhouette trim function as we use that for creating back fill on

castings, just let me know if you would like me to send it to you...

good luck!

Paul Korenkiewicz

FEV , Inc.

4554 Glenmeade

Auburn Hills, MI, 48326-1766

the intersection part. Then you can use the silhouette function of trim

on copied solid surface to create surface edges relative to the plane.

Then you can use edge in a sketch to create a flat surface, and then

measure the area of that surface...

Yes, I know, a bit involved, but this should work... You might have to

copy surfaces and intersect them to create the part that is only the

intersection... I have a short list of steps and sample part for the

silhouette trim function as we use that for creating back fill on

castings, just let me know if you would like me to send it to you...

good luck!

Paul Korenkiewicz

FEV , Inc.

4554 Glenmeade

Auburn Hills, MI, 48326-1766

Feb 09, 2011
11:49 AM

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Feb 09, 2011
11:49 AM

Hi all,

I have always hacked my way through getting projected area measurements

for injection molded parts. Is there a slick method? I remember using

a surf cut feature that used the silhouette of the part - I wonder if

there is a way to use that tool...

How do you do this?

Thanks...

-Nate

This email may contain material that is confidential, privileged and/or attorney work product for the sole use of the intended recipient. Any review, reliance or distribution by others or forwarding without express permission is strictly prohibited. If you are not the intended recipient, please contact the sender and delete all copies.

I have always hacked my way through getting projected area measurements

for injection molded parts. Is there a slick method? I remember using

a surf cut feature that used the silhouette of the part - I wonder if

there is a way to use that tool...

How do you do this?

Thanks...

-Nate

This email may contain material that is confidential, privileged and/or attorney work product for the sole use of the intended recipient. Any review, reliance or distribution by others or forwarding without express permission is strictly prohibited. If you are not the intended recipient, please contact the sender and delete all copies.

Feb 09, 2011
12:30 PM

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Feb 09, 2011
12:30 PM

I also use PVA (plan view area) calculations for my forged parts.

I use TDO (tool design option) to activate the functions to get a

silhouette curve on the model (normally used to calculate parting lines)

Then, on any flat plane normal to the direction of pull use edit-fill to

sketch a flat surface.

In sketcher select the silhouette curve and use the 'create entity from

edge' command (looks like a cube with a highlighted edge) and select the

silhouette curve.

Make sure the sketch is closed and not over lapping. Close the sketch

The system will make a flat 2D surface representation of the PVA.

Use normal measure commands to measure this area.

Although this works, and I find that the silhouette feature is robust,

but the sketch 'create entity from edge' command is dumb and will fail

with changes to the number of edges, etc...

Christopher F. Gosnell

FPD Company

124 Hidden Valley Road

McMurray, PA 15317

I use TDO (tool design option) to activate the functions to get a

silhouette curve on the model (normally used to calculate parting lines)

Then, on any flat plane normal to the direction of pull use edit-fill to

sketch a flat surface.

In sketcher select the silhouette curve and use the 'create entity from

edge' command (looks like a cube with a highlighted edge) and select the

silhouette curve.

Make sure the sketch is closed and not over lapping. Close the sketch

The system will make a flat 2D surface representation of the PVA.

Use normal measure commands to measure this area.

Although this works, and I find that the silhouette feature is robust,

but the sketch 'create entity from edge' command is dumb and will fail

with changes to the number of edges, etc...

Christopher F. Gosnell

FPD Company

124 Hidden Valley Road

McMurray, PA 15317

Feb 10, 2011
03:24 AM

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Feb 10, 2011
03:24 AM

Hi Nathan

You can use the functionality in measure although for some strange reason it

always slightly over estimates it. (In this example the area is

actually15000 mm2)

Very quick and easy if you don't want an exact measurement! You can also use

"view plane" or "Coord sys" to give the projection

Regards

Steve

_____