Finding the Volume

[erwin.de.guzman]

I need your help friends....

How can I find the content volume of a given 2D Plastic bottle drawing given the width and depth of the bottle. What I need to look for is the height of the bottle's body provided the content volume is 75 mL and other is 150 mL.

I need your feedback ASAP. thanks.

[blads]

My maths maybe a bit rusty but as the "bottle" is roughly rectangular in 2D form, an approximate Vol = w x d x h, or h = Vol / (w x d)

HTH

[Mike.Perry]

Hi "erwin.de.guzman"

Please note I have *moved* this thread from the New Forum Users (Non technical) (http://forums.augi.com/forumdisplay.php?f=47) forum to this one, as I believe it will be better served here.

Below snippet is taken from the small print found on the AUGI General (Non technical) (http://forums.augi.com/forumdisplay.php?f=44) page ( Click HERE (http://forums.augi.com/attachment.php?attachmentid=28398) to see a screen capture )...

<snip>
New to the Forums? This is the place to experiment with the posting editor and learn how to interact with our forums. Please experiment here with forum features and commands.
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Thanks, Mike

Forum Manager

[Mike.Perry]

How can I find the content volume of a given 2D Plastic bottle drawing given the width and depth of the bottle. What I need to look for is the height of the bottle's body provided the content volume is 75 mL and other is 150 mL.Hi

Taking drawing file glamrock bottle.dwg from above post, how can anyone find the volume of the bottle if the Height is not given ?

Have a good one, Mike

[erwin.de.guzman]

My maths maybe a bit rusty but as the "bottle" is roughly rectangular in 2D form, an approximate Vol = w x d x h, or h = Vol / (w x d)

HTH

It means I dont need to get the volume per section? meaning looking at the top view?
kindly show it by example using the given bottle. Really I can't figure it out.

[jaberwok]

I've shown the areas based on the largest shapes in your drawing units. Unfortunately, the original drawing was not to scale and the units you want to use are ambiguous (it's an inch-based drawing).

HTH


Must add - APPROXIMATELY.

[charlie.bauer341340]

First you need to work in the same increments so you have to convert mm to ml or visa versa. 1 liter = .001 cubic meters then apply the equation h=v/(wxd).

[erwin.de.guzman]

May I know ur computed volume so I can compare what I get?

Thanks.


First you need to work in the same increments so you have to convert mm to ml or visa versa. 1 liter = .001 cubic meters then apply the equation h=v/(wxd).

[stelthorst]

Attached is my calculations using your drawing. It was a little unclear to me exactly how much of the bottle will hold the liquid so I calculated the height two ways.

1. Using the exterior dimensions of the bottle (probably incorrect)
150 mL = 80.852 mm
75 mL = 61.558 mm
2. Using the scaled interior dimension of the bottle.
150 mL=186.97 mm
75 mL=136.71 mm

Both calculations along with the drawing I used to come up with my answer is attached.
(HINT: I used the list command to determine area of the shapes)

Hope this helps

[erwin.de.guzman]

Thank you sir.


Attached is my calculations using your drawing. It was a little unclear to me exactly how much of the bottle will hold the liquid so I calculated the height two ways.

1. Using the exterior dimensions of the bottle (probably incorrect)
150 mL = 80.852 mm
75 mL = 61.558 mm
2. Using the scaled interior dimension of the bottle.
150 mL=186.97 mm
75 mL=136.71 mm

Both calculations along with the drawing I used to come up with my answer is attached.
(HINT: I used the list command to determine area of the shapes)

Hope this helps

[stelthorst]

Erwin,

Thanks for the nice private message. Unfortunately the email address you gave me doesn't work. I also tried sending you a private message and it was kicked back. You might want to check into this. As for your question, sure I'll help, just send me a private message with your questions and correct email address.

[arshiel88]

I'm not sure if this would help....but why not make a precise solid 3d model of the bottle and its contents and use massprop command instead of formulas. (best for complex shapes). Units probably in centimeters so that the volume would be in milliLiters (mL). 1cu cm. = 1mL (pls. correct me if i'm wrong.)

[Rico]

I'm not sure if this would help....but why not make a precise solid 3d model of the bottle and its contents and use massprop command instead of formulas. (best for complex shapes). Units probably in centimeters so that the volume would be in milliLiters (mL). 1cu cm. = 1mL (pls. correct me if i'm wrong.)

this is the place I'm leaning to. We have CAD do all these fancy things and we're still trying to manually do them? Convert it to 3d and check the props for the area and / or volume. It's all there.

[jaberwok]

The original drawing shows a complicated shape. I'm not convinced that acad could produce it accurately. Did I mention it's out of proportion as originally drawn? And we would need to know the wall thicknesses.

[stelthorst]

I agree with John. Given the drawing provided there was no way to accurately draw it in 3D. I guess it would also depend on how accurate of an answer the teacher was requesting. My guess it was more of an exercise in how to calculate volumes and less an exercise on 3D drafting.

Also, if you look at the drawing the height of the bottle is the unknown. This would mean you would need to keep checking your mass element volume in order to find the height needed to get the .75 and 1.5ml capacities specified.

[arshiel88]

Since we are dealing with accuracy, I think to calculate an accurate volume, even manually, shouldn't we need an accurate (i.e. scaled/proportioned) 2D drawing? I think we need to decide first the constants, such as the size of the bottle neck, thickness of the bottle, dimension of the irregularities, etc., before proceeding to any calculation. And remember, One of the deadly sins (http://forums.augi.com/showthread.php?t=42489) in AutoCAD is drawing not to scale. :D

The height variable is not a problem. There is a uniform profile in the middle of the bottle.
DesiredVolume = volume of the upper part + volume of the lower part + h(area of the uniform profile).
which can be transposed as:

h=(DesiredVolume - vol. of the lower part - vol. of the upper part)/ the area of the uniform profile

[erwin.de.guzman]

this is the place I'm leaning to. We have CAD do all these fancy things and we're still trying to manually do them? Convert it to 3d and check the props for the area and / or volume. It's all there.


Thanks Friends!

I try to convert it into 3D but Im totally novice when it comes to 3D.
May be if some one could give me a step by step procedure in doing this bottle or similar to it so that I could have a guide if ever I could have another project that require to find the volume.

Thanks again.

[erwin.de.guzman]

the wall thickness is 0.6 - 1.0 mm

the 2D drawing is just a scaled drawing since the original given drawing was 60 mL.

Sorry for not giving the right 2D drawing.
I put the required bottle width and depth the only problem is the height to make the bottle's volume be 75 or 150 mL.

May be I need to learn 3D.





The original drawing shows a complicated shape. I'm not convinced that acad could produce it accurately. Did I mention it's out of proportion as originally drawn? And we would need to know the wall thicknesses.

[jaberwok]

I've been trying but so far I've found it impossible to create a recess in the base that matches the drawing (after rescaling).
For the small bottle the width needs to be scaled by 0.89 relative to the length.
BTW, the overall shape reminds me of the Cussons Imperial Leather talc flask but I don't have one around.