Analysis

Dear expertsI'm just frustrated about very primitive exercise in Creo Simulate 12. See the sketch below. In creo there is an assembly contains 2 composite parts, in real glued together. The cored composite board (composites 1) is bonded on composite frame L profile (composite 2). The target is to see how the rigidity of L profile affects the modal frequencies of board.Only composite quilts are supported in Simulate, it means the virtually gap is observed, the layup guilts are not in touch, bonded connection is not supported in this case. I have tested a lot of procedures, rigid link, spot weld...etc., but only bonded interface is closest to real surface - surface bonding.Another test I have made, in assembly the 3rd part - glue was created, the thickness was a gap, but there is a material interference - glue + laminate in real. Does anybody have an idea how to fix that? What is the correct connection feature between two composite parts, or generally between two shells?Thx a l

I am using Creo Parametric Release 12.4 and Datecode12.4.2.0Meshing problem. I have 2 assembles. Each are messing fine. But when I combine them it fails.Here are the errors that I facedCould not complete creating elements on all the seleted entities.

Hello,My motivation was to create a pattern of points to be used as measurements (in this case the rotation of these points in relation to a selected CS in the main assembly)As rotation cannot be used in solid elements, I created a pattern of point to points linked by rigid links to do the job. This is after imported in the main assembly and finally patterned. My hope was to not have to define rotation measurement manually from each point later. With measurements in a pattern, this would be made automatically by Creo Simulate.However, I cannot select this pattern using the “pattern” option for anything – but I can use other patterns – and this does not make sense.Is there a bug or a limitation that is not clear? Is there any work around?I am avoiding manual solutions, as it may involve hundreds of points. Here the explanation:Pattern 1 cannot be selected for any feature that has “Pattern” as option. However, I can select another pattern made in the same assembly And I ca

I am using Creo Flow (not Creo Simulate Live) , as part of Creo 11.0.4.When I use the 'Generate Mesh' option, the geometry will mesh correctly the first time.However, after this, even with a very simple geometry (simple cylinder), if I make any changes to the mesh parameters, the part does not get re-meshed, it stays with the previous mesh.The only way to update the mesh is to remove the fluid domain entirely, add a new fluid domain, and then apply a mesh.There must be a way to update the mesh without having to remove the fluid domain each time?

I'm trying to simplify a model and I'm not sure how far to go or how much it is worth my time.  I'd like to know if there is a way to analyze how my simplification of a part or assembly affects the graphical performance.  For example if I take out the inner surface of all the tubes is that better than simply focusing on removing the holes.If there was a way to create an analysis that tells me you model has ___ number of faces that might go a long way with knowing how my different simplification methods are improving model performance.That or if there was a way to do an analysis that say your model is using ___ GPU memory.Does anyone from the community know how to do such an analysis?   

In Creo Mechanism (MDO) motion simulation,I would like to use different spring constants for the loading and unloading (return) directions, in order to represent spring hysteresis.Is there any way to simulate this behavior in MDO?If not directly supported, what is the recommended workaround?

Reference topic: https://community.ptc.com/t5/Analysis/Flow-Analysis-Post-Processing/m-p/871276#M11296    Hello @MB_10584523 ! Thanks for this post ... I have the same question or the same request. It would be great if PTC would enable calculation of average and mass averaged report for velocity (so, similar as for total pressure). This option should be available either through XYPlot either/and through interface output property.   @tmoser : good advice until implementation of my proposal into Creo. 😀   Have a good day  

Hello, I would like ot know if there is any posibility to measure COM of subassemblies. According to direct method there si no way to propagatemeasure to higher level assembly.  Most of our frames has simple design with 1 rotation axis and one hydraulic cylinder and we need to confirm if analytical solution is confirmed by FEM model. So key parameter is COM of subassembly. In top level assembly there is a way how to measure COM of whole assembly but it is not enough to calculate reactions in joints.

Hello. I am simulating one beam model which rotates around an axis.・A clock spring is set on the rotation axis.・In MDO, beam model start to rotates upward once it start running I would like to explore Minimum Spring Constant K (Nmm/deg)  that allows the beam model to rotate more than 40 degrees.(no need to change Beam model dimension) In this case, is it possible to obtain a solution for the spring constant K with BMX?Or any other solution in Creo? I try setting Spring constant K as BMX Goal by using relation. But it was not explored This problem will be solved by hand calculations. However If a solution exists for this simple problem, I will apply the method to more complex problems . (to simulate Car Seat Tumble Motion) Any advice would be greatly appreciated.

I am using Creo SimulateNot able to retrieve Creo simulate files. Facing error. How can I resolve that ?

Hello PTC community,  I'm using Creo Parametric 9.0.4.0 and would like to perform simulations. Apparently, the Simulate is grayed out but Flow Analysis is not. Is this licensing issue or something else? Thanks,SR

Hello, I'm trying to test Simulate Lite within Creo2 / Creo3.I've done this a long time ago.There, I've tried e very simple part for testing.But all menus are Grey.I can't even assign a material.Someone have an idea of my problem ?Thanks

Hi I am measuring some reaction forces in the XY domain, but i am confused which CSSY CREOis referencing? Is it the COG CSSY for the rigid body? Or the default CSSY for the rigid body assy?

Hello all,If anyone has an idea about torsion springs ?I am trying to apply torsion spring mechanisms to this assembly, but during the process I am unable to pick a reference point; the first point is selected, but the second point is unable to be picked, and the torsion spring is not visible. Result of this process I need a calculation against the torsion spring. For reference, I attached a screenshot of the extension spring that shows when the reference points are selected and the spring becomes visible. Torsion spring asm.Extension spring example :    

Hi Community,I am trying to perform a FEA Analysis for the below assembly with contacts. I am interested in a Non-Linear Static Analysis using the preload in the bolts, internal pressure in the pipe and axial load on the flange. I have defined custom time functions for these loads as per the needs but whenever I run the study, it fails throwing up a UI Library error. Can anyone guide me what needs done in such cases?I have defined custom materials for the Gasket and the Rubber springs for its Density, Poissons ratio and its Youngs modulus and I hope that should be sufficient but still unsure if that might be the primary reason for UI Library Failure as the system does not recognize these custom materials?Any Inputs are highly appreciated. Please see attached step file of the model for review.Best regards,Yash 

The traditional Creo Simulate supports distributed computing, allowing users to sent their simulation tasks to workstation servers for computationally intensive tasks.Just wondering if "Creo Ansys" supports distributed computing technology as traditional Creo Simulate does?

This is my first independent attempt at a dynamic mechanism analysis.I have four horizontal sliders on a slide base that has a dove tail groove down the middle.The sliders have a rectangular shape, with straight plane faces, and are all 100 mm wide.The first slider is a servo motor, start position 0 and the end position is 900.Sliders 2, 3, 4 have start positions 200, 400 and 600 respectively, and end position 900.Distance between sliders is 100 mm.I have set Collision Detection to Global Detection and to Push Objects upon collision. My starting problem was establishing the proper 3D Contacts between the four sliders, and I made a mess of it in the end.Out of sheer desperation I added masses to all sliders (picked steel in the end, as I had a lot of problems with brass, for unknown reasons) and I fumbled with Damping = 80, Young’s modulus = 2e6 to 5e6 and Poisson = 0.30 (without really understanding how these really work).This is one of the error messages from that stage:"The prop

@Jaime_Lee @vnamboodheri @anursingh @Catalina  I would like to inform you that it is not possible to add an attachment to discussion reply Example ... https://community.ptc.com/t5/Analysis/Dynamic-Mechanism-with-collision-problems/m-p/1046711  

There are a plethora of discussions on converting real numbers to strings.  While PTC tech support does provide two working suggestions, they are not simple.  Beyond that, I have been unable to find anything on the PTC Community that will work in all cases.  (See list at bottom.)  With that as the background, here is my attempt at a robust real-to-string function that I believe works correctly for all positive numbers.  Please test this out and let me know if you can find any errors with it.   /* Real NumberX = 12.34567 /* Number of DigitsND = 3 /* Rounded NumberRN = FLOOR((X+(5/10^(ND+1))),ND) /* String Output - No Leading ZeroY = ITOS(FLOOR(RN))+"."+EXTRACT(ITOS((RN-FLOOR(RN)+1)*10^(ND)),2,ND)   * To get a zero before the decimal point for values less than one, a conditional statement is required:   /* String Output With Leading Zero IF FLOOR(RN) == 0     Y = "0."+EXTRACT(ITOS((RN-FLOOR(RN)+1)*10^(ND)),2,ND) ELSE   &nbs

Hi, i hope to be in the right place for my question.I'm playing with Creo Live and i'm doing some CFD analisys on a mecnanical structure, i've manged to have the simulation running (it's similar to the wind tunnel example file).I was trying to get the total forces on a body or a set of surfaces but i have zero cluse on how to setup a measurent.Any help is wellcome.

Hi all,I'm working in Creo Parametric Mechanism to model a pinion and crown gear assembly with axial/radial offset between their axes. This is not a standard intersecting-bevel gear setup — the pinion and crown gear must mesh with a deliberate offset between their axes.However, when I attempt to apply the built-in Bevel Gear Connection, Creo throws: "The references for bevel gear connection are not coplanar”.How can I simulate bevel gear kinematics when the pinion and crown gears are offset (i.e., non-coplanar axes)? 

Hello, Looking for an explanation of some strange results I am getting in Creo simulate.  I am wondering if I have the model setup incorrectly.  The model is not that complicated.  its a bolted assembly with some external masses (sensors) that are associated to the bracket via mass elements and weighted links.   I am trying to understand displacement of the mass elements when they are excited at resonance.  The oddity I am seeing is the massive displacement at frequency 0 (clearly not a real result).   Any help or thoughts on this matter would be great!  See the details i have posted below.     

Hello everybody!I'm using Creo 7 to simulate a mechanism that uses a piston (slider constraint with lower and upper limit, the green part) to partially rotate a cranck mechanism . The problem is that the rotating part wants to pull the piston beyond its limits and then simulation crashes. Actually when the piston is fully extended it acts as a rigid body, What I'd like to do is:- Extend the piston- Start rotating the levers- Stop rotating- Retract the pistonAny suggestion? I thought to replace the piston with a single part (a rod) but as simulation is not "correct" Any suggestion?Best regardsStefano

Hello,  Whenever I print to pdf, the point constraints result plot lose part of its resolution, making them close to unreadable. Is there a way to increase the font size of those particular fonts bigger? I have tried playing around with these config parameters with no luck: default_ui_font 10text_height_factor 40.000000model_tree_font 10

Hi everyone and happy new year,    I've started the Simulation Live trial program and while following the introduction course, i'm running into a strange issue : results stays at zero for any restriction/load i might try. In the information message area, i'm getting this message : The material library is not available in the current working directory or the application data folder. I've commented my usual pro_material_dir option to make sure i'm using OOTB material library. I've also tried to copy the library or the applied material file in the working directory without success.   Thanks for any help on that topic.