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Model for Tutorial

June 11, 2014, 12:30 am
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Hi I am starting with Hypermesh and lsdyna, and for this I found : http://www.altairuniversity.com/2012/07/30/ls-dyna-model-setup-with-hypermesh-free-recorded-webinar/ but I did not find the file used in there. Where could I find it. Thanks.
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Re: Model for Tutorial

June 11, 2014, 12:59 am
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Hi jacobess, The webinars that have a model file available are posted with a link in the resource library itself, I am afraid this model file may be unavailable, Perhaps you should also start with the tutorials in help, these come with model files in the installation directory, see - HyperWorks Desktop Applications > HyperMesh: HyperMesh Solver Interfaces Tutorials here is a list of them, LS-DYNA HM-4600: General Introduction to HyperMesh - LS-DYNA Interface HM-4605: Defining LS-DYNA Model and Load Data, Controls, and Output HM-4610: Using Curves, Beams, Rigid Bodies Joints, and Loads in LS-DYNA HM-4615: Model Importing, Airbags, Exporting Displayed, and Contacts using LS-DYNA HM-4620: Rigid Wall, Model Data, Constraints, and Output using LS-DYNA HM-4625: Assemblies using LS-DYNA HM-4630: Interfacing for Arbitrary - Lagrangian - Eulerian Capability using LS-DYNA HM-4635: Checking Penetration, Creating Joints and Checking Minimum Time Step HM-4640: Dummy Positioning, Seatbelt Routing, and Control Volumes
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Re: Model for Tutorial

June 11, 2014, 12:59 am
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Hi jacobess, The webinars that have a model file available are posted with a link in the resource library itself, I am afraid this model file may be unavailable, Perhaps you should also start with the tutorials in help, these come with model files in the installation directory, see - HyperWorks Desktop Applications > HyperMesh: HyperMesh Solver Interfaces Tutorials here is a list of them, LS-DYNA HM-4600: General Introduction to HyperMesh - LS-DYNA Interface HM-4605: Defining LS-DYNA Model and Load Data, Controls, and Output HM-4610: Using Curves, Beams, Rigid Bodies Joints, and Loads in LS-DYNA HM-4615: Model Importing, Airbags, Exporting Displayed, and Contacts using LS-DYNA HM-4620: Rigid Wall, Model Data, Constraints, and Output using LS-DYNA HM-4625: Assemblies using LS-DYNA HM-4630: Interfacing for Arbitrary - Lagrangian - Eulerian Capability using LS-DYNA HM-4635: Checking Penetration, Creating Joints and Checking Minimum Time Step HM-4640: Dummy Positioning, Seatbelt Routing, and Control Volumes
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Re: Problem with cylindrical roller bearings

June 11, 2014, 1:04 am
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Hi PrakashPagadala, with higher NINC and MAXITER values run the analysis. But I do not get the analytically results of Hertzian pressure, can you give me tips for mesh of logarithmic cylindrical rollers?
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ERROR # 1800

June 11, 2014, 8:09 pm
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I worked at optimization problem at H.W12 topology optimazation this message appear *** ERROR # 1800 *** Stress/strain/force response is applied to topology or free-size domain. For stress-constrained topology or free-size optimization, please use the STRESS option on the design variable definition card. Property ID = 1
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Re: ERROR # 1800

June 11, 2014, 11:19 pm
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Hi Mohi, This error is because the stress constraint is not defined from the Topology panel, The only way to apply a stress constraint for a topology optimization run is using the global stress constraint in the topology panel, Image
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free run

June 12, 2014, 5:22 am
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How to perform free run to check mesh connectivity?
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Re: free run

June 12, 2014, 5:14 pm
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Hi Mohi, Run a modal analysis without constraints. you should expect first six frequencies as zero or tending to zero.
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Re: Problem with cylindrical roller bearings

June 12, 2014, 9:08 pm
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Hi Martin, could you please elaborate your question? what do you mean by "did not get the analytically results of hertzian pressure"?
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hypergraph window going black as i open it to plot results from my motion view file

June 13, 2014, 6:56 am
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as i am plotting the results i got from motion view on hypergraph the graph window goes all black can anyone tell me how can i rectify that problem
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Re: Segmentation Violation Error in NLGEOM with composite shell

June 13, 2014, 12:59 pm
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Thank you so much Prakash, the updated version gives no more segmentation errors. However, my implicit nonlinear NLGEOM analysis does not converge....
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Re: How can I use RBE3 as constraint?

June 15, 2014, 4:10 am
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Quote from HawkBecker on May 29, 2014, 07:03
Can you please send the model using the secure dropbox below?
I uploaded my file, thank you for taking a look at it. Prakash, when I put a new node (Geom->Nodes->xyz) I clicked the center of the RBE3 element until x, y and z coordinates took the values of it. This node then becomes my new node. In between the new node an the RBE3 center I set up the CBUSH element. Then I set the constraint at the new node. Or should I have used the function at nodes->xyz "as node"?
Did you take a look at it? I still haven't found an answer. As soon as I define a vector that allows me to define K1 through K6 following the CBUSH element definition I get the error message that the element length is zero. Which makes sense, yet I don't get the initial error as described above. Help is much apreciated!!
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Re: Segmentation Violation Error in NLGEOM with composite shell

June 15, 2014, 3:59 pm
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Strange, at my end, the analysis converged, Do you see any error message? can you paste the error message from filename.out and filename_0001.out file? Image
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Re: hypergraph window going black as i open it to plot results from my motion view file

June 15, 2014, 4:02 pm
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Hi, what are you plotting? you might need to delete the settings files in your "MyDocuments" Folder . Please search for:hmmenu.set hmsettings.tcl hwsettings.xml and delete these files. If not, please let us know and we will investigate further.
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Spring: Force to length

June 15, 2014, 8:31 pm
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Hello, I got a problem with a spring, property TYPE32 (SPR_PRE). I have defined a curve like this: x/y 0/7850 -0.07805/7850 -0.0829115/0 This curve is integratet into my spring as IFUN1. Though, when the spring shortens, depending on STIF0 the spring adds a force of 7850N independet of its length (STIF0=0 or deactivates) or adds an force that seems independent of my curve and STIF0 (STIF0≠0). I would try to use F1 and D1 but the force has to be constant for the first 0.07805 of shortening... My question is now, how can I link the spring-force through a curve to the length of the spring as it is described as F = f (x - x0).
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Re: Segmentation Violation Error in NLGEOM with composite shell

June 15, 2014, 11:17 pm
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I have changed the boundary condition; now torsional Moment is applied instead (please see the attached.) Let's Focus first the NLGEOM Analysis without optimization (Analysis Only). Varying NINC in NLPARM matters but I cannot find any proper value of NINC for my task at all.. TSCTRL=ARC is now Chosen, but you can of course suggest me a better option (if any).https://www.dropbox.com/sh/27u9rva0ej18lcw/AAAWgkTcjih-1UjfAKiK84A1a
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Re: How can I use RBE3 as constraint?

June 16, 2014, 12:59 am
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hawkbecker, Can you try with the CID field set to 0 for all the cbush elements Image
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Re: How can I use RBE3 as constraint?

June 16, 2014, 4:29 am
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Thank you, but sorry to ask: Where is that menu? I don't know it, sorry
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Re: How can I use RBE3 as constraint?

June 16, 2014, 5:16 pm
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HawkBecker, You need to go to the card edit panel, and then choose the cbush elements, Image
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Re: Following Tutorial Simple pendulum and unable to animate

June 16, 2014, 5:27 pm
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