Hello - I am using the mnfres function in the flextk toolkit to pull the nodal displacements, velocities, and accelerations for a MNF after a simulation. So far, I've been able to get some good data from it but my team and I curious to know if we can…
I use ANSYS to generate flex bodies for use in ADAMS. Most times, I will also run the generated .mnf file through ADAMS/Flex to shrink the file size using the MNF Optimizer and the "Precision>Single" Option.
Today, I noticed some strange modifications…
Hello,
I'm creating a flexible suspension subsystem from a rigid subsystem. It involves replacing the control arms and the subframe with MNF files which has been carried out successfully. Next step is to adjust the subsystem to tune the wheelbase…
Hi,
I want to model a rail as a flexbody in ADAMS. However to do this I need to create rbe2 on the top surface of the rail shown in red and create a translational joint between the rail and another part. This will make the rail rigid.
…
Hello!
I am just trying to add a flexible body with a force element between two of its interface nodes to reinforce the structure.
I can't share the model, but I think what gives a good picture of the idea is a flexible model of…
I am an Adam user with limited FEA background. I would like to know how I can properly create an MNF file using Nastran to represent linear flexibility in Adams.
Could I have a template with explanation on the important command lines in the Nastran…
Is it possible to perform Modal Stress Recovery in Adams? If so, is it possible to easily find the hot spots of the flexible body and to plot the time history of nodal stresses?
Hello,
I am trying to model a flexible body between two rigid bodies. I want the flexible body to be compressed or depressed based on the motion of the bottom and top rigid bodies.
In this picture, the blue and green parts are rigid…
I am trying to run a nonlinear model using Adams Max Flex. I am defining material properties with MATDIGI card. When I run the model, I get the following error message:
*** USER FATAL MESSAGE 7831 (SCA Service Loader)
SCA SCA.MDSolver…
Hello Adams Community,
I am using Adams MaxFlex to run a nonlinear simulation.
I am generating the bulk data file in my code and importing the resulting `BDF` file into my model.
My model runs perfectly fine when I use…
ADAMS/View 2022.4
ANSYS 2022 R1
I have a model with several flex bodies. This message doesn't point directly at the problem mnf, but I have my suspicions it's one for a handed part where I mirrored the original mesh to get the other side…
Dear community,
I have a multibody dynamics model of human body in Adams. Currently the intervertebral discs (IVD) are modeled as bushings with stiffness and damping. I am trying to model IVDs with flexible bodies option in Adams. I was able to import…
When I use Precision Move to rotate a body, the Orientation of the new part holds the rotation history. To be clear, when I rotate a body by 30 degrees about the Z axis, the new orientation looks like (0, 0, 30).
Is there a way to erase the position…
Dear community,
Our university has hexagon lerning center. And i am progressing ADM710. There is an appendix-a with examples. But downloaded files doesnt have these examples' files. How can i find and download them?
Regards.
Hi I have a system with a roller screw(blue shaft, orange nut). I am trying to include the shaft of the screw as a flexbile body so i can assess if it's bending will transfer onto a different component connected to the orange nut. I don't think there…
I have a flexible housing undergoing vibrations from the internal components. For each mode , i do have a modal velocity from this time domain simulation. I would like to use this information for evaluating Equivalent radiated power in decibels or Surface…
During Flex body simulation, i am getting stress & strain plot. But i want to know force on each node in all three directions. How can i export it in excel formate.
What if LPRF (mm). As we know, all hot spot location coordinate is referred wrt to LPRF so i want to known during which stage we have to select LPRF.
Attached Files (1)
Hello,
The system i simulate is a propelled vehicule that is composed of two parts : first is a rigid part, the second is a flex part.
Until now, i started the simulations with a sim/statics command, in modal representation => the…
Do you have any recommendations on how to (efficiently) model the connection between two parts bolted together when one is interested in capturing the stiffness of the bolted assembly and don't care about what is happening at the bolts?
I've…
Hello,
I want to apply initial conditions to a model containing flexible bodies.
Doing this, I face the issue of massive deflections of the flexible bodies during initialisation.
My guess for explaination is:
It seems that the…
I faced a failure during solving the official MaxFlex tutorial. I want to open the “ twistbeam_bdfmodel.asy ” assembly, but it doesn’t worked properly, a main element is missing from it. I realized, that can’t open with Adams Car 17.2 either with Adams…
In the old version Adams 2017, in the flexible body contact, lists of flexible bodies or solid geometries (JGEOM) are not supported. You can ONLY make the individual contacts. I am wondering in the latest version, is it still not supported? Thanks
I have tried to change it using following two functions :
1.IF(FXFREQ-100:0.03,0.1, IF(FXFREQ-1000:0.1,1.0,1.0))
2.STEP(FXFREQ, 100,0.03,1000,1)
Is it correct?
By using this functions simulation time has increased tremendously from…
