Recent Posts

1

Analyzing & Optimizing Stiffened Panels / Re: Stiffener Fasteners

« Last post by James on May 17, 2013, 05:25:33 PM »

The fastener spacing and weight on the options tab will only adjust the panel weight to include the added weight of the fasteners.

Do you have a FEM with stiffeners discretely meshed? If so there is a way to get the pull-off and shear loads at the FEM joint. For this to work, you will need the fastener pull-through and shear allowables.

If it is a smeared panel (or a Non-FEA project) you may be able to use the bonded joint capability to get the peel and interlaminar shear stress at the stiffener to skin interface.

http://hypersizer.com/help/#Failure/joint-bonded.php

If you can back-out a bearing you can use the bearing/bjsfm analysis to size the composite skin.

http://hypersizer.com/help/#Failure/BJSFM/joint-bolted-jump.php

I hope this is helpful.

-James

2

Miscellaneous Software Topics / Re: Circular Beam Family

« Last post by James on May 17, 2013, 05:13:48 PM »

There is not a diameter ratio cross-section geometric check for the circular beam family. It is possible to write a user-defined failure check that could be used as a plugin.

http://hypersizer.com/help/#Udef/udef-jump.php

3

Miscellaneous Software Topics / Circular Beam Family

« Last post by scott.ford on May 17, 2013, 02:46:40 PM »

Is there any way to link the inner and outer diameter of my circular beam?  I want to look specifically at designs with an 85% ratio.  How can I fix the inner and outer diameter ratio together using only the variable HyperSizer provides.  Any suggestions?

4

Object Model / Re: Generate Discrete Laminates from Effectve Lamiantes via COM API

« Last post by Ryan on May 16, 2013, 08:40:04 AM »

Generating and assigning sets of effective and discrete laminates is available through the GUI only. You can manually create and assign individual discrete laminates using Laminates.Create() and Group.VariableMaterial(), but this is not the recommended approach.

-Ryan

5

Object Model / Generate Discrete Laminates from Effectve Lamiantes via COM API

« Last post by Tobias Bach on May 16, 2013, 04:45:23 AM »

Hi there,

when I use HyperSizer via the GUI, I can create Effective Lamiantes, analyze the component and generate Discrete Laminates from the result.
Is this feature available for the object model per function? Or do I have to get the Material Name of the chosen Effective Laminate and the thickness of the variable, evaluate the share of the different fiber directions and then generate the Discrete Laminates via the Laminates.Create function?

Tobias

6

Object Model / Re: Import FEM Data via COM API

« Last post by Tobias Bach on May 15, 2013, 08:29:49 AM »

Hi Ryan,

thanks, problem solved.

Tobias

7

Object Model / Re: Import FEM Data via COM API

« Last post by Ryan on May 15, 2013, 07:38:20 AM »

Hi Tobias,

When you import the FEM through the COM API, the load cases are not rebuilt. You will have to manage this with some extra code. I've posted some sample code that shows how to do this.

http://hypersizer.com/help/index.php#COM/Members/com-project-import_fem.php

-Ryan

8

Object Model / Import FEM Data via COM API

« Last post by Tobias Bach on May 15, 2013, 04:17:31 AM »

Hey Guys,

I have a problem with the ImportFEM function in VBA.
I've set the rundeck FEM & FEA Filename to existing NASTRAN .bdf & .op2 and saved the project and used the ImportFEM function. The model is imported correctly, the Load sets are available, but the load cases are not imported.
If I perform a manual import, all data is there. Due you have any clue what's the error?

This is the code I used:

Code: [Select]

Set oProject = oHs.Projects.Item(ProjectName)
oProject.Rundecks.Item(1).FilenameFEM = "D:\HyperSizer Data\Projects\Bach\Test_Batch\dummy.bdf"
oProject.Rundecks.Item(1).FilenameFEA = "D:\HyperSizer Data\Projects\Bach\Test_Batch\dummy.op2"
Call oProject.Save
Call oProject.ImportFEM

Thanks, Tobias

9

Analyzing & Optimizing Stiffened Panels / Stiffener Fasteners

« Last post by FEAUser on April 26, 2013, 07:24:33 AM »

Is there a mechanism to analyze the fasteners that attach the stiffeners on a stiffened panel?  I changed the spacing on the options tab, but it didn't seem to have an affect on the stiffener sizes.  I'm looking for the easiest way to determine the fastener size and spacing to attach the stiffeners.

Thanks,

John

10

FEM Coupling (HyperFEA) / Re: HyperFEA and Composites form result?

« Last post by Ryan on April 19, 2013, 03:29:49 PM »

The blending/compatibility functionality (Step 3, Step 5) is not used in HyperFEA. HyperFEA will only size the component using the candidate effective/discrete laminates  visible in the Variables tab. These candidate effective/discrete laminates can be generated using the Composites form (Step 1 and Step 4).

HyperFEA can be run incrementally throughout the composite optimization process to make sure the load path has been converged.

-Ryan