promoted curve (simulate)
lost in parametric
video attached
↧
promoted curve lost
↧
Incomplete Fastener surface regions
Hello,
Has anyone seen this before?
The fasteners have incomplete surface regions.
The surface regions are complete on the other side and at the contact between the components.
As can be seen in the image, there is nothing spectacularly complex about the geometry (else I couldn't model it).
ttfn
↧
↧
Split surface in Creo for analysis in Ansys?
I'm a novice in Ansys and I'm trying to split a surface to apply a load on a portion of that surface. How do I do this in Creo?
↧
Plate bending
Hello,
I have a returning problem. I often have to simulate the process of different metal plate bending. There are a lot of cases when these processes include more steps. (Bending 1, Bending 2..Bending X). As far as I know, the material will include a residual stress after all bendings (in case of sigma > yield stress). So the result of current bending will depend on the residual stress field generated by previous bending step. Based on this, the simulation (result of STEP 2) will be correct and exact if the STEP 1 also were simulated.
At the moment I prepare the STEP 1 geometry (bended already) in Creo and a simulate only the STEP 2. Consideration of all STEPs would be too complicated and long. But I think this solution is not correct becasue the STEP 2 starts fomr a state which doesn't include the residual stresses.
- How can I consider the residual stress from STEP 1 with more simple method?
- Or how can I separate the STEPs? For example; Analysis 1: STEP 1 only than Analysis 2: STEP 2 only initialized from result of Analysis 1.
Thanks a lot:
Roland
↧
Hinge Deflection Simulation
Hey guys,
I have a sort of unique issue. I have door and a 3 part hinge that is mounted to a flange on a pressure vessel. I'm trying to simulate the deflection after hanging the door and suggest a way to improve the design so that it is easier to mount the door and counteract the door's large bending moment. It needs to swing freely and have some degree of adjustment, which is why the pins are there.
This specific tank had only a ϕ48" OD. Another tank we are designing has a ϕ78" OD and a much more massive door but will utilize a similar hinge mechanism.
Im having issues properly constraining the simplified assembly so that I can get the correct response from the body. How should I constrain it such that I can properly get the door to attempt to rotate the hinge block, pins and bracket while keeping them sufficiently constrained?
I have tried planar constraints on the back side of the door, pin constraints on the hinge pins and removing the flange all together, placing fixed displacement constraints on the bracket face instead.
Simplified simulation assembly model. Just the Door, Hinge Plate, Hinge Pins, Flange and the attachment bracket.
The model with constraints. Im using a Pin constraint with rotation and translation fixed, a planar constraint on the inner face of the door and simple, gravity load.
↧
↧
Peak values of the time series
Hello All,
I am looking for a function to find the several peaks of the following graph (time histories).
↧
Problem in axis selection in mechanism
Hi All
I use Creo 2
while I was trying to create a mechanism on my assembly, ( while had created the reference axis on different parts) to apply a rotating mechanism (using servo motor)
I noticed I was not able to select any axis. it seems that Creo requires me an entity and a reference. But I dont know how to select them.
What should I create on my model to create a mechanism properly ?
I have put only cocentricity constraint on my parts.
↧
Extract measures data to plot in Excel
Hello
Is there any way to extract the measures data to a csv file? Also, when I plot out the measures, is there away to change the axis from linear to log?
Thanks
Rich Hilson
↧
How to measure force in dynamic Time and frequency analysis?
I want to measure support force in constrain surface, it's easy to get it in static analysis, but how to get it in dynamic analysis like shock simulaiton?
I checked below diagram but didn't found there is no force available , could anyone do me a favor, thanks.
↧
↧
What causes Creo Simulate to not show analysis in the analysis definition dialog box?
Hi,
What will Creo Simulate to not show analysis in the analysis definition dialog box and how do I get them to show again?
Creo Parametric Simulate 3.0 M080
Thanks,
Don Anderson
↧
Suppressed connections
Hi All
I am trying to simulate a gear mechanism. But I get this error :
The highlighted connections are not defined from two bodies, if you continue they will be suppressed
I have figured it out that the second axis of the rotation should belong to the assembly, and not the parts. is that right?
caus this creates a difficulty that you have to relocate your Assembly axis after defining your parts location. Is there another way around ?
and how could I resolve this suppression ?
Thank you very much
↧
Creo 3 simulate M120 - 25% more calculation time
The Creo simulate computations with Creo 3 M120 requires an average of 25% more calculation time compared to the week release M100. With different Creo Simulate calculations on different computers the time difference could be proved. With the Creo Simulate M120, the logical threads / cores could not be recognized. The display shows only the physical cores present. There is an explanation for the performance Penalty??
Hardware: Dell Precision Tower 5810 XCTO - Intel Xeon Processor E5-1620 v3 (Four Core HT, 10MB Cache, 3.5GHz Turbo)
↧
Fatal Error due to memory?
Good Morning
Can you help me to fixed this problem?
Thank you
Best Regards
Federico
↧
↧
can creo calculate acoustic resonance frequencies of a cavity?
Hi there,
i would like to calculate the acoustic resonance frequencies of a cavity. can i do that in Creo?
i do not know how to set the material, because it is air.
thanks
Ming
↧
Bad Error
Hello!
Sometime This happened to someone?
It's no clear about the problem of the 3D element..
Good Life
↧
How to inheritance simulation result to original 3D data for comparison
For example, I make static analysis for spring deformation. so I want to export the deformed spring to original 3D model (not in simulation mode) for detail check, is it possible to do it?
Thanks.
↧
What is best practice for FEA of assemblies?
Hi
I am rater new to Creo Elements, using release 5 from 2009. On a regular basis, we need to do standard static analysis on welded details, such as the one shown on the screenshot. The heigth is about 360mm and weigth 4.4kg material steel. The item is fixed by bolts in the horizontal plates and load is applied at the boltholes in the vertical plate.
My question is, what is the best practice to build a FEM model based on an assembly?
I have considered the following issues by different methods:
- The design might be changed so a new FEM model i required
- It is nice to have the FEM model for a specific version of the assembly for later reference
- preparing the FEM model from the assembly should be simple and not too time consuming
I have tried and/or considered different approaches:
- Make a copy of the assembly using the backup option, so that I dont have to work on the original file
- In Mechanica, add rigid links so that the parts are connected or
- In mechanica add welds so that the parts are connected
- Transform the assembly into a part by -File -Save as:
- shrink wrap (will often remove too many details)
- via IGES
- Via SAT
- Via Step (I lost the reference between the parts :-( )
- to remove gaps between welded parts and remove unneeded details i then add
- rounds,
- chamfers
- extrusions
- Alternativly I could remodel the item as a part so that i get a good base for the FEM from the start.
Especially step 3 and method 4 is time consuming, but I am more sure to get a usable model than when I make calculations on an assembly (1)
Method 1 also has the disadvantage that surface regions cannot be used together with assembly cut, which is a good tool for simplifying (mirroring)
What are your experiences? which method is the best? Did I overlook some smart way of doing it?
I have earlier worked with Inventor where I typically would use schrinkwrap and with SolidWorks, where i often made a shell model based on the original one, but that was in my previous job where i often worked whit large thinwalled vessels.
Best regards
Torkil Bladt, M.Sc. Eng TCA-Lift, Denmark
↧
↧
Max. Von Mises stress Fringe vs. Measure
Hello!
I am calculating a truss simulation of a 3d Structure with L-Profiles.
I have set the idealizations for beams, constraint sets, loads, etc.
After the Statich analysis, I can review the Max VM Stress in Fringe model and it is 47 MPa
Then I have put some measures (Of Max VM Stress) in some critical points (or beams) and the Max Stress ist 54,1 Mpa
I have checked the Max VM Stress in the Study Status (where all the predefined Measures are shown) and the Max VM Stress is 52,9 MPa( I think it is near of my Measure, but I don't know really where)
Why is the Fringe model not showing the real Max VM Stress?
Thank you in advance
↧
How to use the FFT of Acceleration Data in Dynamic Frequency Analysis and Dynamic Random Analysis?
How to use the FFT of Acceleration Data of three directions in Dynamic Frequency Analysis and Dynamic Random Analysis?
Our product is an electronic box with two fans. We have obtained data about their fan vibration from the fan supplier, as shown in the attachment.
We want to analyze the impact of fan vibration on our products. Is it possible to use dynamic frequency analysis or dynamic random analysis? How do I apply attachment data? How to convert the acceleration-related data to force-related data? How to judge the results of the analysis？
↧
Creo Simulate Multicore Calculation
Dear All,
I want to start a discussion about how Creo Simulate is using multicore and how to apply the best settings.
At the Moment I am doing a lot of Simulations but the calculation time is quite a mess even when I am optimazing the mesh etc.
Therefore we asked out PTC dealer how we can accelerate the calculation time.
The recommondation was to use as much cores as possible, use a lot of ram and also use a SSD.
So we ordered now a new Maschine with the following Hardware:
--> 2x CPU Intel Xeon E5-2699v4
--> 128 GB RAM
--> 512 GB SSD
--> Nvidia Quadro K5200
--> Windows 10 64bit
--> Creo 3.0 M120
We have now 2x 22 cores but Creo Simulate is only using max 6 cores or so.
This is something we cannot understand. Also the PTC dealer support don´t know how to proceed.
We checked several settings but it is not faster then my mobile Workstation.
So is maybe some one there who has some experience about using multicore with Creo Simulate?
Thank you in advance.
↧