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Thanks, I'm thinking I'd try approximating the time derivative at t=0 assuming a very small thermal bounday depth, 1 micrometer or so. Then compare solution against constant fluid temp exact solution to be sure it's reasonable.

Hi, I have an application in which I have a semi-infinite solid subjected to surface convection at the x=0 boundary and a time varying fluid temperature. I am familiar with the heat equation (d2Tdx2 = 1/alpha dTdt) and I've been able to solve my problem by discretizing the spatial domain and...

Hi, I'm hoping someone can help me with what (I think) is a basic meshing question. I have a part that I've split in spaceclaim to take advantage of symmetry/ create a sweepable multibody part using the share topology feature. I'm trying to control the swept mesh and seem to be having some...

I am looking for some help getting circuit boards integrated with my pro-E model. A previous engineer has setup an assembly model which utilizes step files of circuit boards generated by a EE using Altium. Within the pro-E assemly we have a wire harndess created using pro/cabling. When we...

The elongation is the total stretch at fracture, I'm actaully looking for the ultimate strain (strain at ultiamte strength, or the strain at onset of necking). I'm doing an elastic / perfectly plastic analysis and I don't think I can assume I carry the full plastic load all the way out to...

I've been looking for the ultimate strain for some different materials and having trouble. Particularly 13-8 H1000, MIL-HDBK-5 has a stress strain curve but it only ges up to about 1.2% strain. They also have a "full range" but it shows the same Ramburg-Osgood curve and then at 1.2% strain the...

This is a simplified example, my model is much more complex. It's actually a keyed assembly and I'm modeling the stresses in the keys. I guess I can model the assembly and use contact elements, this would be the closest thing to reality but I'm trying to keep the size of my model down. I was...

I'm having a problem with singularities at the boundary of split surfaces when a portion of the surface has a fixed BC applied to it. As a simple example, if I have cantilevered arm which is supported by a wall over half the arm, I've split the surface in two, and applied a zero displacement in...

Does anyone know if there is a way to run a MPA analysis in Pro/Mechanica and have it converge on both local disp/energy index and user defined measures? As far as I can tell I need to pick either the index or my own measures. Ideally I'd like to converge on the local displacement/energy index...

I'd like to use the linearized stress query function while displaying a fringe plot but in the info tab it is grayed out as an option. Is there something I need to do in order to use it or do I need a more advanced license? The help menu says I'd be able to select two points to define the...

I have a fairly basic question regarding weighted links in pro/mechanica. The way I understand the link is this. I attach a surface (say a cylinder) which is the independant side to a point, which is the dependant side. The point motion is then the average motion of the surface, so if the...

why wouldn't 7.5 be a constant boundary? It would be the min boundary which would accept the part and respect datum precedence. I would think the gage would need to allow for any acceptable part which meets the high order datum. In this case I could have a pin of 7.1 and my gage would have to...

I'm looking for a little help with determining the appropriate datum feature simulator sizes when the datum modifier does not match the material condition modifier which appears in the FCF of the datum. If you look at Fig 4-16 in ASME Y14.5-2009 I see that the datum feature material boundary...

We don't really do any welding other than welding disks onto pieces to create seals. Nothing structural and no one at my company can really help. We typically just write "weld around this edge". I'm trying to understand joints a little more.

I have a few questions regarding welding and how it is specified on drawings. I've checked a few texts but haven't quit gotten exactly what I'm looking for. First off, fillet and butt welds. Do they always have some filler material which is added or are the pieces just melted together? How...

Thanks for the table, that is the kind of thing I was looking for, I just have to figure out what the fits are (must be metric equivalents to LCx). It doesn't sound like I I'll be able to meet these fits, is it maybe ok to have a little bit of radial interference loading the balls?

I'm fairly new to using ball bearings and I was hoping for some advice on what I think should be a very common topic but I can't actually find any info on. When I have a simple shaft system with a bearing on each end and mounted in a 2-part housing. There is going to be position of the...

I am tying to create a camed surface cut into the ID of a cylinder. Does anyone have a good method for this? Essentially I want a groove around which has a ramp up to another level.

My volume does extend beyond the solid model, but I've had this work before. I think the problem is related to simplified reps. I de-featured my model by making an FEA Representation and excluded things that wouldn't effect the result but would add complexity. I changed it to use family...

I'm using the mesh refinement to set the maximum element size in the volume. In my case .040.