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Simulating a Thread with a constraint
Hi, I am doing a simple pressure analysis on a pipe that is threaded on both ends. In the drawing, the thread is not modelled, it is only shown as a block. For my analysis, I am not considering the...
View ArticleRe: Simulating a Thread with a constraint
For my analysis, I am not considering the thread as a failure point, only as a constraint. I am fully constraining the part on the surface of the "block" of threads with a surface region that has no...
View ArticleRe: Simulating a Thread with a constraint
Andrew, If you constrain the thread you will overstiffen and the rotation about theta (cylindrical csys z-axis along the cylinder axis) will reduce. This will push the high stresses along to somewhere...
View ArticleRe: Simulating a Thread with a constraint
Shaun, Thank you for the response. As for looking at the part and ignoring the thread as a failure point, my company uses a separate thread calculator to determine when the thread would fail. This is...
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Re: Mapped Mesh on Fillet
Hi Jonathan, After building the sketch feature to break up the geometry to create the volume regions, I was able to create the mapped mesh. You can also control the mapped mesh subdivisions easily. I...
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Re: Simulating a Thread with a constraint
I know the way I am fully constraining it right now is not the best way, but I was not sure how else to simulate threads holding the part in place on both ends. The best way to tackle this problem is...
View ArticleRe: Simulating a Thread with a constraint
Thank you, this was helpful. Your picture simulation is exactly what I'm looking for. A weighted link seems to be the best option. To answer a few of your questions, no I am not considering buckling....
View ArticleValues of measures from load steps of non-linear analysis
Hi, I would like to export the values of the pre-defined measures for fasteners from the first load step in a non-linear analysis in Creo 2.0. The background is that I analyze many flanged assemblies...
View ArticleCreo Analysis Capabilities?
Hi, Does anyone have a list (or better yet know where PTC has a published list) of Creo Parametric 2.0's analysis features and if possible their capabilities within the design process? Particually...
View ArticleRe: Creo Analysis Capabilities?
Welcome to the forum Peter. Here's a list I've compiled quickly using the Creo interface and help. Keep in mind that the types of analyses that are available depend on your context and license(s). I...
View ArticleUsing Fasteners - Creo Simulate
I was studying about the use of fasteners (adding them directly with the software tool) in Creo Simulate 2.0 and I couldn't find some answers for the doubts below: Simulate 2.0 really doesn't...
View ArticleOne principal stress on a free surface should be zero, but its not. Why?
On a free boundary surface of a solid, one of the principal stresses should be zero (plane stress), or equal to the applied pressure, if there is a pressure load on it. This, seemingly simple boundary...
View ArticleRe: Using Fasteners - Creo Simulate
Hi Guilherme, Thank you for your question. Let me try to answer your questions. In Creo Simulate 2.0, we have two forms of contact interfaces - Frictionless or Infinite Friction. In Creo 3.0 we are...
View ArticleRe: Using Fasteners - Creo Simulate
HelloLuiz, Thank youfor thisquestion. HelloMark, Thank youfor thisvery detailed explanation. But would it bepossible to have ademo file, for example in the knowledge baseofPTC.So thatwe can dotests...
View ArticleRe: Using Fasteners - Creo Simulate
Hi Guilherme, One thing I might add to this discussion is the use of preloaded fasteners due to wrench torque. I’ve attached a document to illustrate how to use the preload. It’s for WF4, but it...
View ArticleRe: Mapped Mesh on Fillet
Hi Mark, Thanks again for your help. However, in your model you've extruded elements along the length of the parts; I want to revolve them around the axis, so that I can model the end fillets (which...
View ArticleRe: Mapped Mesh on Fillet
Hi Jonathan, In most cases I would try to simplify the model....which I did in this case. I suggest a quick call to discuss the process. Please send me an e-mail (mfischer@ptc.com) and we can setup a...
View ArticleRe: One principal stress on a free surface should be zero, but its not. Why?
I have now made a second run with a mesh control, max element size 2*R on internal rounds plus "detailed fillet modelling" in AutoGEM settings. 168k element vs 43k elements in the first model. It's now...
View ArticleRe: One principal stress on a free surface should be zero, but its not. Why?
Hi Mats Strictly speaking you need stress perepnicular to the surface on which you apply the pressure to be equal to the applied pressure. This couild very well be the min principal but I do not know...
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