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I've recently attempted to transition from VisualMill to Catia-Manufacturing. I am having problems with generating the NC code from machining operations in Catia V516. I am using the (IMS) bendix (comes with Catia?) post processor to generate G-code suitable for Mach3. My toolpaths look OK...

Hi all, I am facing a problem with ensuring that a multi layer carbon fiber composite properly bonds to a carbon steel surface (one side only) and it stays bonded while going through termal cycles going as low as -25F to 150F. I would also like to avoid any cathodic corrosion between the steel...

Hi all, Is there a way to improve the thermal conductivity of carbon fiber, multi layer composites (using epoxy)? I've hear of some metal additives that are mixed into the epoxy but they degrade mechanical performance :-( Any other way to go about this in a cost effective way? I'd like to get...

I am hoping someone could suggest an epoxy/resin system that has a TG in the 450F range and is compatible with carbon fiber. Now that was the easy part, the hard part is to find an epoxy/resin system that will yield the high TG and is relatively easy to work with, i.e. which can be cured...

Hello all, I need to determine the shear modulus of UNI and BID glass fiber+Epoxy composites for shear in x, y and z plane. From what I was able to gather so far, the Iopescu test method, using specialized strain gages, seems to be the most common for this however it requires an expensive test...

Hi, I need some orthotropic materials properties data of some of the most common E-glass and foam core (PVC/Lastafoam/Polyurethane) materials. Does anyone have a Materials catalog (*.CATMaterial file) for Catia (Composite Designer)?... it would really help. Thanks.

Hi all, I have a challenge to reduce the overall weight of a sandwich construction using E-Glass (style 7725 9 oz. BID). I will use vacum-bagging to ensure little or no excess resin in the layup. Also, in order to keep the costs down, I was contemplating using S-Glass instead of the E-Glass...

Hello, I have recently started using Catia V5. I have a few important assemblies in Solidworks 2004/2005 that I need to migrate to Catia. These assemblies contain parts with wireframe and thin surface elements! I tried exporting into IGES from Solidworks, but the results are not what I...

Hello, I was wondering if anyone was successful in installing MVision 2004 on a server other than iPlanet 4.1 iPlanet 4.1. is a very old version and is hard to come by... I tried apache+tomcat but not having much luck :-(... Thanks

Hi all, Does anyone know whether Solidworks and Patran/Nastran can be integrated? If so how is this accomplished? Thanx, M

Hi, I need to model a complex assembly that I want to run FEA on using Patran/Nastran. The assembly will use fiberglass composite laminate as the material. I was wondering what modeling strategy should I follow in Solidworks (I' am using that for CAD). Should I model the parts with their...

Hi all, Any idea whether Patran 2004 can be integrated with Solidworks 2004? If so, how would one set this integration up? Thanks,

Hello all, I am relatively new to this field and my latest question has to do with computer aided aerodynamic analysis. I know that it takes weeks/months worth of investment in learning any given packages so I would like to have a basis for confidence in a given code before making such a...

Hello everyone, I was wondering if anyone has a formula for deriving the flexural and shear strength of the composite from data obtained from a plain flexure/shear stress test using a 3 point flexure/shear test fixture (e.g. http://www.wyomingtestfixtures.com/Products/page37.htm) Thanks, M

Hello, I have recently switched to Solidworks+SurfaceWorks so please bear with me... I am looking at a project for modelling an airframe made of glass fiber composite materials. I was wondering what the best strategy is for this project? If you have experience modelling composite shell...

Hi, I am currently looking into which modelling environment I should be using. I would like to model (2D/3D) an entire airframe structure with the objective of using the model for stress test and FEA. The material used in construction would be largely glass fiber "sandwich" composite on a foam...

I have been doing some research into turbo compounding of a Mazda 13b rotary engine. The exhaust speed on these engines is very high, and the gases are very hot since they contain unburned fuel that continues to burn as it exits the engine. This means that there is a lot of energy that can...

Hello everyone, I have an interesting problem which I have been grappling with for a while. Thermodynamics is not my specialty, so this problem proves exceedingly difficult. I need a sanity check on my computations and even some help if it proves that I am out to lunch :-) The Problem: I have...