Calculating Weight Of Plastic Parts
Question asked by Charles Graves:
I am trying to find the proper way to convert mass property information taken from 3d CAD models of plastic parts and generate the wieght of the part. I can easily get the mass of the model (in grams) and the volume of the model in cubic millimeters. I am looking for formula(s) to take this info and convert it into the part weight in grams. I do have available to me the specific gravity of various types of plastic material and I believe that this will have to be a part of that formula.
posted by Rick:first, your 3d cad program should let you set the property values and automatically calculate the part weight.
If not, here is the formula I use:
volume in cc3 / 16.287 (constant) X specific gravity of material (constant) X .0361 (constant) X 454 (constant to convert to grams)
This will give you weight in grams.
posted by G.J.AVHAD:Plz give us with example.
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posted by David Hodge:cu. in. x specific gravity x .0361= wt. in lbs. x 454=grams / 28.35= oz.
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posted by donya:hello,
i would like to find the relation between the allowable wastage of injected plastic fragments and the fragments dimensions , fragment weights and fragments shape.
for example a smaller fragment is less possible to brake when transferring than a big one.
although a fragment which has a complex shape is more possible to brake than a simple shaped fragment when transferring.
I thought there might be a formula or a table which can tell me the universal standards for this .
thank you very much