Unable to get dimensions for individual plies separately
Unable to get dimensions for individual plies separately
(OP)
thread327-286047: Need catia V5 CPD (composite part design) help
Hi, I am using CATIA V5 for composite modeling on curved surface. I am using grid method for modeling, in manufacturing module I am unable to get dimensions for individual plies separately.In reality Plies in one laminate must have different dimensions due to curvature. (Inner most ply must have smallest dimension). Kindly help me out in this regard. Secondly how can I manipulate Title block in Composite Ply book ?
Thanks
Hi, I am using CATIA V5 for composite modeling on curved surface. I am using grid method for modeling, in manufacturing module I am unable to get dimensions for individual plies separately.In reality Plies in one laminate must have different dimensions due to curvature. (Inner most ply must have smallest dimension). Kindly help me out in this regard. Secondly how can I manipulate Title block in Composite Ply book ?
Thanks





RE: Unable to get dimensions for individual plies separately
Upload you 3D. I'll take a kook.
RE: Unable to get dimensions for individual plies separately
I tried to use your suggested method to create my own Title Block, but once I created ply book using Composite Ply Book, I was unable to delete Standard composite Title Block. But, it was possible to create, delete or customize Existing Title Blocks in an empty worksheet, by using commands Set Background----->Insert----->Frame and Title Block.
Would you please help me out in this regard.
Thanks
RE: Unable to get dimensions for individual plies separately
RE: Unable to get dimensions for individual plies separately
RE: Unable to get dimensions for individual plies separately
Believe me if you will model a part with core you'll see a difference between first and last ply. To get better flat patterns you may use 2 master surfaces. One below core and one over core. Personally i don't do that because on all of my parts i have at least 0.5" excess. If you have a specific part (real part) with issues don't hesitate to contact me. I'll try to help.
Cheers,
Jenia Ladkov
RE: Unable to get dimensions for individual plies separately
Thank you again.
RE: Unable to get dimensions for individual plies separately
As you can see first ply is wider than last. Also try to avoid using the same name for the plies.
This is also working without core. Just check with thickness update option.
p.s This thread shall be moved to catia section on this board so other catia users may learn something.
RE: Unable to get dimensions for individual plies separately
Thanks.
RE: Unable to get dimensions for individual plies separately
http://catiadoc.free.fr/online/cpdug_C2/cpdugut170...
Check With thickness update.
RE: Unable to get dimensions for individual plies separately
Thanks
RE: Unable to get dimensions for individual plies separately
Why do you need ply weight to be shown on drawing?
RE: Unable to get dimensions for individual plies separately
Thank you.
RE: Unable to get dimensions for individual plies separately
Yes you are right different seed point location will give you different flat pattern. It's hard to say where is the right location for a seed point. It depends on shape and other factors.
Start with geometrical center location and run producibility analysis. If it's not looking good then switch to indication, move seed point and see how this affects analysis.
RE: Unable to get dimensions for individual plies separately
Thank you so much for your time and support.
RE: Unable to get dimensions for individual plies separately
It's always better to define as much properties as possible. Have never checked if this will affect flattening.
If you don't want to get to much rings
If you have seed point issues with a specific part just upload a 3D here and i'll try to help.
p.s Do you use laser projector for plies lay-up?
Cheers,
Jenia Ladkov
RE: Unable to get dimensions for individual plies separately
No , I don't use Laser Projector for Hand Lay up.
Thanks again.
RE: Unable to get dimensions for individual plies separately
https://www.youtube.com/watch?v=rlm7k_OtHek
There are several ways to export composite data from Catia.
First one numerical analysis
http://catiadoc.free.fr/online/cfyugcpd_C2/cfyugcp...
Second one: You can export plies table from Catia to Excel and then you can insert it into a drawing.
Third one: You can use core sample. Personally i prefer core sample because of its associativity.
http://catiadoc.free.fr/online/cfyugcpd_C2/cfyugcp...
Use Core sample drawing view style to bring lay-up table into a drawing. Let me know if you need help on that.
Cheers,
Jenia Ladkov
RE: Unable to get dimensions for individual plies separately
Thanks.
RE: Unable to get dimensions for individual plies separately
RE: Unable to get dimensions for individual plies separately
RE: Unable to get dimensions for individual plies separately
We use composites for both prepregs and wet lay-up.
RE: Unable to get dimensions for individual plies separately
RE: Unable to get dimensions for individual plies separately
Plies flattening option not designed for cores.
For a small number of plies you can not to use composites workbench. Just use excel to create lay-up table or whatever table.
There is one advantage in composites workbench and this is plies direction. You don't have such opportunity if you use surfacing.
It's hard to answer what is a better option. It depends on application and part type/class. First of all think of a price....
p.s never use sheet metal option for cores flattening.
RE: Unable to get dimensions for individual plies separately
Yeah you are absolutely right depends upon application and cost is also a major factor.
Thank you I was thinking to use sheet metal option
BTW why sheet metal option should not be used ?
RE: Unable to get dimensions for individual plies separately
RE: Unable to get dimensions for individual plies separately
RE: Unable to get dimensions for individual plies separately
RE: Unable to get dimensions for individual plies separately
1. Laser projection
2. Ply book/production file that will show approx location of seed point (this method requires some modifications in drawing standard).
With a simple shapes it's not so critical. Anyway start with producibility analysis. Take a look at colors. Yellow let's say is ok (but requires some attention), red means that you have to start pay attention (compression or tension).
RE: Unable to get dimensions for individual plies separately
http://catiadoc.free.fr/online/cpdug_C2/cpdugut200...
I did not get your second point. Would u please explain, what kind of modification will be needed in drawing standard. and what is meant by shearing angle in producibility ?
RE: Unable to get dimensions for individual plies separately
By shearing angle you can see how prepreg behaves at different areas using different seed point. This analysis helps to get more accurate flat patterns.
Regarding drawing standard you have to set to display seed point/curve on. After view creation you'll see that point on drawing. This is the only way to show seed point to guys on a shop floor without laser projection.
RE: Unable to get dimensions for individual plies separately
RE: Unable to get dimensions for individual plies separately
I modified existing ISO Drafting standard, and created some drawings before this modification, now this standard does not update already drawn dimensions like arrow size, arrow style, Dimension font size, dimension font style, view line thicknes etc. Is there any option to update already existing dimensions to new standard or I have to draw all views and dimensions again ?
Anxiously waiting for your reply.
Thanking in anticipation.
RE: Unable to get dimensions for individual plies separately
You don't have to start from corners. There are some cases when you can't start lay-up from a corner. It depends on a shape.
Post some screens and i'll try to explain where and why seed point should be.
yes you can control text properties using scripts. What programming language do you use? to update existing dimensions use following command T:Dim* (use Catia command for that / right bottom corner). This command will select all the dimensions. what you have to is to press alt+enter to enter properties. Now you can edit everything you want in one shot.
RE: Unable to get dimensions for individual plies separately
I modified existing title block written in VBA. How to bold some text in VBA ?
How to update arrow style, font style as updating standard does not update this ?
Thank you for command, will let u know if I still face some difficulty. Thanks
RE: Unable to get dimensions for individual plies separately
RE: Unable to get dimensions for individual plies separately
RE: Unable to get dimensions for individual plies separately
RE: Unable to get dimensions for individual plies separately
Note:
Follow given axis system for plies
I want to bold the word "Note:"
I have assembled composite parts in product file like spars,ribs assembled in product file. Is it possible to mirror these parts in product file using Symmetry command in product module. I tried but was not able to mirror plies. only the on which plies are placed are mirrored. Would u please help in this regard. Thanks
RE: Unable to get dimensions for individual plies separately
CODE --> VB6
'----GENERAL NOTES---- Set MyText2 = MyDrawingViews.ActiveView.Texts.Add("NOTES:" + Chr(10) + _ " 1.INTERPRET THIS DRAWING I.A.W. ASME Y14.100M" + Chr(10) + _ " 2.DIMENSIONS AND TOLERANCES ARE I.A.W. ASME Y14.5M" + Chr(10) + _ " 3.SURFACE TEXTURE I.A.W. ASME B46.1 AND IN " + Chr(181) + "IN" + Chr(10) + _ " 4.ALL DIMENSIONS ARE I.A.W. 3D MODEL FILE", 8, 7) MyText2.Name = "TitleBlock_Text_NOTES" MyText2.SetFontSize 0, 0, 1.8 MyText2.SetFontName 0, 0, "Century Gothic (TrueType)" MyText2.AnchorPosition = catBottomLeft '----END----I don't know about mirroring of composite parts in the assembly workbench. We don't use that and that is what i recommend to you. Read on this forum about digital buck data and you'll understand why companies don't do that. I'll check for you if it's possible to mirror comp parts in assy.
RE: Unable to get dimensions for individual plies separately
Thanks.
RE: Unable to get dimensions for individual plies separately
RE: Unable to get dimensions for individual plies separately
what happening if you generate new title block? Take a look and links and see if there is any problem.
RE: Unable to get dimensions for individual plies separately
RE: Unable to get dimensions for individual plies separately
RE: Unable to get dimensions for individual plies separately