XANSYS Message: 38486 [Go back to message list]
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Subject: Re: COMBIN39 REAL CONSTANTS
Author: Yaser Jaradat
Date: 2002-06-04 15:58:00

It shows the first 6 only the rest is ignored....I will try what Hursha
suggested...using the RMORE

"Bohlen, Dan (GEAE)" wrote:

> View it through the menu ....

> -----Original Message-----
> From: Yaser Jaradat [mailto:yjaradat@g...]
> Sent: Tuesday, June 04, 2002 3:47 PM
> To: xansys@yahoogroups.com
> Subject: [xansys] COMBIN39 REAL CONSTANTS

> I am using COMBIN39 spring. I provide real constants up to 10 or 11 points
but
> when I view the output file
> list for my input I see up to 6 values only. Does that mean that the rest were
> ignored or it views only the
> first 6 values and consider the rest without viewing ??

> I provided this R:
> R, 44, .0, .00, 1.0, 26.65, 2.0, 47.82, 3.0, 59.48, 4.0, 64.75, 5.0,
> 67.15, 6.0, 68.33, 7.0,
> 68.96,8.0,69.33, 9.0, 69.56,10.0, 69.70,

> and this is what appears in the output file:

> REAL CONSTANT SET 44 ITEMS 1 TO 6
> 0.0000 0.0000 1.0000 26.650 2.0000 47.820

> Yaser

> "Malametz, David" wrote:

> > Dean,

> > You're right. I did check the unconverged solution and couldn't find
> > anything out of the ordinary. The linearity is geometric. The
> > nonconvergence is that the solution diverges through 100 iterations. The
> > load should be orders of magnitude below buckling.

> > I suppose that I could try to select a different solver. This was supposed
> > to speed the solution, but....

> > Thanks for the questions. The list I follow is similar.
> > David

> > -----Original Message-----
> > From: Dean Brown [mailto:Dean_Brown@m...]
> > Sent: Tuesday, June 04, 2002 12:30 PM
> > To: xansys@yahoogroups.com
> > Subject: RE: [xansys] Structural (imbedded elements)

> > David,

> > Have you checked the unconverged solution? This may provide a useful
> > indication of what is happening. What kind of nonlinearity? Material?
> > Geometric? Contact? What is the nature of the nonconvergence? DOF limit
> > exceeded? Oscillation? Other? Is it possible your structure is buckling?

> > I realize you've probably checked all these already, but these are some of
> > the things I check when I run into a convergence problem.

> > Best regards,
> > Dean Brown
> > Microvision, Inc.

> > -----Original Message-----
> > From: Malametz, David [mailto:David.Malametz@h...]
> > Sent: Tuesday, June 04, 2002 11:19 AM
> > To: xansys@yahoogroups.com
> > Subject: [xansys] Structural (imbedded elements)

> > In order to save modeling time portions of a model were simplified by using
> > plate elements (63). To transfer the moments to the 63's, the plate
> > elements were partially imbedded in the solid elements (45). This is a
> > typical technique that has been around for quite a bit. The problem is that
> > it wont converge using a nonlinear static solution. Additionally, I built a
> > simplified model and still the model would not using a nonlinear static
> > solution. Using a linear static solution, it solves immediately.

> > For the elements in the transition range I reduced the material thickness
> > and stiffness by a factor of ten. The density was set to zero.

> > Any ideas? Has anyone else seen this?

> > Thanks
> > David

> > David L. Malametz, PE
> > Sr. Staff Engineer
> > Honeywell
> > Instrument Sensor Products Redmond
> > * david.malametz@h...
> > * (425) 885-8439
> > fax (425) 885-8579

> > "You don't know what you don't know!"

> Yaser Jaradat
> Dept. of Civil Engineering
> University of Maryland
> College Park, MD 20770
> 301-405-1952

Yaser Jaradat
Dept. of Civil Engineering
University of Maryland
College Park, MD 20770
301-405-1952

Posts possibly associated with message #38486AuthorDateScore
38483COMBIN39 REAL CONSTANTSYaser Jaradat2002/06/04 
38484Re: COMBIN39 REAL CONSTANTSHursha Narayan2002/06/04 
38485Re: COMBIN39 REAL CONSTANTSDan Bohlen2002/06/04 
38486Re: COMBIN39 REAL CONSTANTSYaser Jaradat2002/06/04