This macro helps in creating washer split for multiple holes at a time with a given off set value.

Usage/Installation Instructions

1. Run tcl/tk script.
2. Specify a offset value proceed.

Limitation

Run tcl/tk script-->specify a offset value proceed.

Functionality

GUI

Subfunctionality

Panels

I would like to conduct free-free prestressed modal analysis. In other words, the structure has no constraint, but is loaded. Then, this condition is analyzed in modal analysis. First I use linear statics, followed by Normal Modes by STATSUB(PRELOAD). I also tried nonlinear static solution with follower forces too.

Apparently, analyses go flawlessly until I get the results. I see that three rigid modes are missing! I've searched in internet and found out that this is a common problem, even NX Nastran mentioned about this fact in Basic Dynamics User Guide.

I was wondering, if anyone here, attacked such a problem and had a workaround?

Thank you,

Ozan

cudart64_102.dll

cublasLt64_10.dll

cublas64_10.dll

cusparse64_10.dll

When we executing a OptiStruct Implicit analysis, we can use CONTF to get contact force in .cntf file, whether the contact type is freeze or others. 

But in OptiStruct Explicit analysis, the freeze type contact force will not show in .cntf file, does the freeze contact force calculation not be supportted in Explicit?  

Is there any other way to get freeze contact force in Explicit analysis?

Thank you.

Thanks.

- Merge multiple result files into one xml

- Translate xml file into one H3D with Hvtrans tool

- (optionally) integrate a derived result

- (optionally) integrate a derived loadcase

All files used in the video are attached. Please, adapt filenames and directories.

NB: loadcases must have different ids.

These days I use Flux couple with Simulink to do a simulation.

First I make a simple demo, to check the process of Flux couple with Simulink.

But I get error every time. I attach the error information and original model in the mail.

It is kind if some one can take a look and give some professional advice on it.

I am wondering whether I need to define the path of Flux in Simulink preference, but I don’t find the option.

Thanks.

Have a nice day!

I am doing Modal Frequency Response Analysis with Pretension in the bolts.

First, I created Linear Static Subcase for pretension. (Please check the picture attached)

Then, I created Modal Frequency Response Analysis subcase, in which I linked the pretension subcase through STATSUB(PRELOAD). (Please check the picture attached)

The Pretension subcase is working fine and I can see the stress results in Pretension Subcase. (Please check the picture attached)

But, in the Modal Frequency Response Analysis subcase results, there's no pretension stress. (Please check the picture attached)

Why is this happening and how to resolve this?

I have also attached the .fem file and .out file. Please go through it.

Thank You.

If there was only some way I could spend a couple of hours (or less!) on a beautiful Saturday afternoon to give myself a bit of a quick sanity check. And let’s be honest, I just wanted to be able to say I conducted a structural analysis on my daughter’s playset.

But let’s take a couple of steps back.

We purchased this playset fully constructed on someone else’s property with no real plan for disassembly, transportation, and reassembly.  But it worked out. And now we were tasked with putting it back up promptly so it could be thoroughly enjoyed the rest of the summer.

Now keep in mind, we had no CAD models from Design, we had no manufacturing drawings. Just some meticulous notetaking from my wife and an eagerness to use some power tools from me.

While I was standing up on the platform assembling the playhouse, I gave it a little shake and imagined the random vibration response of a dance party from a bunch of 4-year-old kids (and maybe one or two adults). The current design just would not do, (it was probably fine, I just wanted/needed an excuse to over-engineer). This was just a big ol’ mass sitting on top of a spring. And I needed to stiffen up that spring a bit.

So, I poured myself another coffee and opened Inspire to get to work. Now like I mentioned, I had no CAD models or drawings, just the physical parts, and assemblies. With a little measuring and a lot of guesstimating (I didn’t have any safety concerns, was just having some fun with this) the Inspire Sketch tools quickly took the playset from lines to concept design. Using these tools is a snap (pun fully intended).

I created common parts like the 4x4 support post and used the Move tool to copy/paste them into their correct positions. Mirror and symmetry can also be helpful in your projects, so try to utilize them whenever you can.

After getting the parts created and in the approximate location, the auto contact glued them into place. No need to worry about creating any attachments manually or needing to know the correct solver cards to perform this analysis. Today I am just a father building a playset using some tools I sort of have a clue about and glanced at the instruction manual (just like every other day). Fortunately, Inspire does most of the work for me and is intuitive to use.

Now for the fun part, applying the boundary conditions. What kind of conditions should I look at; earthquake, hurricane? We live in Wisconsin, so probably unlikely. Snow load on the roof? Now that is something we must worry about and can easily be done by applying pressure to the roof surface. To start with, I am going to ground (fully constrain) the support posts. We can worry about the force of a giant robot later.

But for now, I want to run a normal modes analysis to compare the difference of the baseline design, which was just the four posts, and my idea of putting 45° gussets in as many corners as I could (I did say I wanted to over-engineer this thing, right?).

My conclusion was adding the gussets increased the overall stiffness by approximately 40%. Now I didn’t need to go through all this to know that reinforcing those corners would brace everything up. But it was fun, I felt pretty good about myself (if not a bit nerdy) and now I can share my experience with you.

Here is the final design. And so far it has held up to wind, rain, snow, an ocean voyage, lava monsters, and more.

For your next home project of finally putting up those shelves, open up Inspire and make sure those shelves hold your Encyclopedia Britanica set. Or better yet, run an optimization to fully design them!

Thanks for reading and let Altair help Inspire you on your next project.

I'm working on simulating Friction Stir Processing (FSP) using Radioss. To save the computational resources, I'm using volume tetra meshing for the workpiece instead of SPH particles. After constructing the model using Radioss, I ran it using Compute Console. Initially, it showed 19 hours to completely simulate the model. Unfortunately, it stopped around 10th hour showing 2 errors, as stated below:

205 - Energy Error Limit Reached

207 - Total Mass Error Limit Reached

What could be the possible causes of such occurrences? Also, when I check the results using HyperView, I noticed that the workpiece that is being plunged undergoes splashing (refer to attached video). Please help me on this issue.

I'm getting warnings during full vehicle simulation as mentioned below,

1. Vertical load is below tire file parameter FZMIN. It is capped at (100)

2. Inclination angle is above tire file maximum parameter CAMMAX. It is capped at (0.2)

3. Inclination angle is below tire file parameter CAMMIN. It is capped at (-0.2)

After these 3 warnings analysis fails saying, ERROR: Statics analysis failed at time = 0

Before ending overall file it gives following errors,

ERROR: Simulation failed due to error encountered in analysis!

Forced termination from API_SendOffCommandSimulate!

ALTAIR DRIVER : : Error running STATICS/Static

ERROR: Error encountered in processing xml input file!

I'm thinking about changing values of auto tire to get rid of warnings but it may not be the main concern causing failure in the simulation.

Please let me know if anybody can decode any specific issue in the model.

Thanks & Regards,

Sudip Chavan

But I could not find the lattice choice instead of Fibrous, Particle or Woven.

Can i import my own model into the multiscale designer ? 

or is there any choice to select the lattice model ? 

My version is: "Multiscale Designer 3.4.80"

Thank you for your attention.

Search all 3D elements in the component specified for any holes and will create a spider with all dependent nodes on the interior face of the hole and automatically calculate the independent node. For 2D elements in the component specified, the script will create a spider with dependent nodes on the hole edge and any immediately adjacent nodes (washer nodes). The independent node will be automatically calculated.

Usage/Installation Instructions

1. Run the *.tcl script in HyperMesh.

2. Select the components which you wish to search for holes and have 1D spiders automatically created.

Functionality

Meshing 

Subfunctionality

1D Meshing

My goal is to extrude the geometry to make it have a defined thickness, but if I use Elem offset/Solid Layers I get a result like this below, where some elements penetrate each other.

The one shown is not the only area where it happens, it is to give an idea of the problem. Is there a way to stop extrusion in certain areas when elements penetrate each other? I've seen that using Validate/Penetration I can identify individual elements that penetrate each other, but Automatic Intersection/Penetration Fix doesn't solve my problems and tends to deform the geometry. Do you have any solutions?
I'm using HyperWorks 2021.2.

I am creating a flux 2D BLDC model by changing the coil shape in the example.

In the example before changing the coil shape, there are RLC, Voltage, FE, Switches, rotating machine comonents, Equipotential, and Ground under Electric circuit. I am curious about how to create them.

Please answer.

Thank you.

Thanks.

I saw a very useful explanation on how to load A/C results in HyperView: https://community.altair.com/community/en/how-to-animate-adams-results-in-hyperview-with-cad-objects?id=kb_article_view&sysparm_article=KB0120351&sys_kb_id=15e627cddbe55d10cfd5f6a4e2961943&spa=1

Is there a way to also animate the FTire model with the loaded A/C results in HV? By FTire animation I would like to see the tire deformation and contact patch loads.

Thank you, 

Felipe.

I'm setting up a simulation for Abaqus using Hypermesh.

I have a centrifugal load, but I don't know how to set it, in the image below is shown what I'm doing  now (I don't know if it's the right way tough):

If it is right, I have some questions:

1)Is the magnitude the rotational velocity (rad/s)?

2)Are Coord1, Coord2, and Coord3 the coordinates of the angular velocity vector?

3)Do DirCos1, DirCos2, and DirCos3 define the direction of the angular velocity vector?

4)How can I apply the load with an exponential rule to help convergence?

Thanks.

I am trying to do a Non linear transient simulation on a sheet metal that contacts a rigid mesh only with gravity loading. The sheet metal seems to be moving in the right direction and contacts the part correctly, but once it has contact with the rigid mesh it moves upward and even though the solution converges, the movement of the sheet metal does not make any sense. Could anybody explain why it does that or what can I do to stabilize the solution? 

Thanks for your help. 

Natalia Reynoso 

I need to simulate a contact between two bodies (as shown in the attached picture). In my case, the blue body is flexible, so I can´t define the contact as a '3D Rigid to Rigid Contact'. I´ve tried different things to solve this problem, but I couldn´t get an appropriate solution.

How can I simulate this kind of contacts?

Thank you in advance.

Kind regards.

When I use the MBD to apply a force on geometery in z direction, I want to constrain the direction only in z direction, which means  the motion in x and y direction should be limited, how to achieve this? 

Thanks

Thanks

2. There is an option to load the user profile ( Abaqus, LS dyna) in hypermesh with a green icon. Is there a similar option in hyperworks?