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  Topic: [APDL] Error when restarting an analysis
kerry.kreitman

Replies: 0
Views: 11458

PostForum: XANSYS   Posted: Wed Jun 22, 2016 10:03 pm   Subject: [APDL] Error when restarting an analysis
Hello everyone,

I encountered the following error today when trying to restart an analysis:

*** FATAL ***
Cannot extend a previous version result file.

This error confuses me because the AN ...
  Topic: [Xansys] Microplane vs Williams and Warnke Modelling Failure
kerry.kreitman

Replies: 6
Views: 8829

PostForum: XANSYS   Posted: Fri Apr 03, 2015 6:35 am   Subject: [Xansys] Microplane vs Williams and Warnke Modelling Failure
Fayaz,

The steel is the easy part. I'd start with a bilinear elastic-perfectly plastic material model (you can use a small hardening modulus after yield to help with convergence). Strain hardenin ...
  Topic: [Xansys] Microplane vs Williams and Warnke Modelling Failure
kerry.kreitman

Replies: 6
Views: 8829

PostForum: XANSYS   Posted: Wed Apr 01, 2015 1:41 pm   Subject: [Xansys] Microplane vs Williams and Warnke Modelling Failure
Fayaz,

In terms of modeling reinforcing bars, the SOLID65 elements only have the capability to model smeared reinforcement, while the SOLID185 elements can be associated with discrete reinforcement ...
  Topic: [APDL] Orientation of solid element faces for REINF265
kerry.kreitman

Replies: 1
Views: 3216

PostForum: XANSYS   Posted: Thu Feb 26, 2015 11:13 am   Subject: [APDL] Orientation of solid element faces for REINF265
Here's an update in case someone else finds this thread in the future with a similar question. I came across some information in the documentation for SOLID185 layered elements that discusses how to ...
  Topic: [APDL] Orientation of solid element faces for REINF265
kerry.kreitman

Replies: 1
Views: 3216

PostForum: XANSYS   Posted: Mon Feb 23, 2015 7:30 pm   Subject: [APDL] Orientation of solid element faces for REINF265
Hello everyone,

I have a simple mapped mesh of rectangular prism solid elements (SOLID185) and am adding smeared reinforcement elements to them (REINF265). I started with a small cube with only a ...
  Topic: [STRUC] Microplane material model for concrete
kerry.kreitman

Replies: 2
Views: 5796

PostForum: XANSYS   Posted: Wed Feb 18, 2015 9:23 am   Subject: [STRUC] Microplane material model for concrete
Thanks Peter, turning nonlinear geometry on gives results that are much more like the behavior I expected. I appreciate the advice on further improvement as well.

Kerry
  Topic: [STRUC] Microplane material model for concrete
kerry.kreitman

Replies: 2
Views: 5796

PostForum: XANSYS   Posted: Tue Feb 17, 2015 5:21 pm   Subject: [STRUC] Microplane material model for concrete
Hello everyone,

I am in the process of converting from the legacy "concrete" material model with SOLID65 elements to the microplane model for simulating concrete in bridges. In attempts ...
  Topic: [APDL] [STRUC] Consecutive static analyses
kerry.kreitman

Replies: 10
Views: 12469

PostForum: XANSYS   Posted: Mon Oct 20, 2014 6:08 am   Subject: [APDL] [STRUC] Consecutive static analyses
Thanks everyone for the responses. I will investigate in finding a new element to use that supports EKILL/EALIVE, or settle with using different temperatures to define different material models. I a ...
  Topic: [APDL] [STRUC] Consecutive static analyses
kerry.kreitman

Replies: 10
Views: 12469

PostForum: XANSYS   Posted: Fri Oct 17, 2014 8:15 am   Subject: [APDL] [STRUC] Consecutive static analyses
Good point, apologies for posting that poorly researched question. I think that I can find another work-around to approximate the effects of the first analysis in the second, without actually running ...
  Topic: [APDL] [STRUC] Consecutive static analyses
kerry.kreitman

Replies: 10
Views: 12469

PostForum: XANSYS   Posted: Thu Oct 16, 2014 4:44 pm   Subject: [APDL] [STRUC] Consecutive static analyses
Thanks for the quick responses, David and Martin. A couple of more comments:

David - I was using a multiframe restart (by default), which seems to restore the real constants to the point of last s ...
  Topic: [APDL] [STRUC] Consecutive static analyses
kerry.kreitman

Replies: 10
Views: 12469

PostForum: XANSYS   Posted: Thu Oct 16, 2014 1:50 pm   Subject: [APDL] [STRUC] Consecutive static analyses
Hello everyone,

Is it possible to run two consecutive static analyses in ANSYS in which the model changes slightly between the two? I would like to run one analysis, change the real constants of a ...
  Topic: [APDL] Array manipulation
kerry.kreitman

Replies: 2
Views: 5871

PostForum: XANSYS   Posted: Wed Aug 06, 2014 6:04 pm   Subject: [Xansys] [APDL] Array manipulation
Chris,

Thanks for the quick response, and for putting me on the right track. *VFUN only copied the first column (since its a vector command) but *MFUN did the trick. The commands I ended up using ...
  Topic: [APDL] Array manipulation
kerry.kreitman

Replies: 2
Views: 5871

PostForum: XANSYS   Posted: Wed Aug 06, 2014 4:37 pm   Subject: [APDL] Array manipulation
Hello everyone,

I cannot figure out how do a seemingly very simple task in APDL, despite searching through the help documentation for a useful command. I'd like to combine two arrays into a third ...
  Topic: [APDL] Saving and resuming results from an analysis
kerry.kreitman

Replies: 24
Views: 49063

PostForum: XANSYS   Posted: Wed Jun 11, 2014 7:29 am   Subject: [APDL] Saving and resuming results from an analysis
Martin and Christopher,

I completely understand and respect the purpose of the forum, the physical limitations of the forum server, and the impracticality of the most experienced users taking valua ...
  Topic: [APDL] Saving and resuming results from an analysis
kerry.kreitman

Replies: 24
Views: 49063

PostForum: XANSYS   Posted: Tue Jun 10, 2014 1:23 pm   Subject: [APDL] Saving and resuming results from an analysis
First of all, I'd just like to say a huge thank you to all of the experienced ANSYS users who take the time to read these posts and help out people who have much less experience using the program. I ...
  Topic: [APDL] Saving and resuming results from an analysis
kerry.kreitman

Replies: 24
Views: 49063

PostForum: XANSYS   Posted: Tue Jun 10, 2014 6:19 am   Subject: [APDL] Saving and resuming results from an analysis
Siva,

As Jose said, the time history post-processor is what you need. I am just discovering how useful that can be so I don't know too much about it yet, but perhaps the following code will help y ...
  Topic: [APDL] Saving and resuming results from an analysis
kerry.kreitman

Replies: 24
Views: 49063

PostForum: XANSYS   Posted: Sun Jun 08, 2014 3:46 pm   Subject: [APDL] Saving and resuming results from an analysis
Thanks Dean and David - that is very helpful information

Kerry
  Topic: [APDL] Saving and resuming results from an analysis
kerry.kreitman

Replies: 24
Views: 49063

PostForum: XANSYS   Posted: Fri Jun 06, 2014 9:56 am   Subject: [APDL] Saving and resuming results from an analysis
Hello everyone,

I have a question regarding which ANSYS-created files I need to be saving to be able to later resume the database and examine the results. Despite reading through the ANSYS documen ...
  Topic: [STRUC] [APDL] Advice for solving nonlinear problems
kerry.kreitman

Replies: 8
Views: 11203

PostForum: XANSYS   Posted: Tue Jun 03, 2014 10:47 am   Subject: [STRUC] [APDL] Advice for solving nonlinear problems
Thanks, Ricardo. My model only contains rectangular shapes, and thus the elements are very uniform and of pretty good quality (I think), so that sounds promising. I'll give the PCG solver a try

K ...
  Topic: NEED A ADVICE FOR NONLINEAR SOLUTIONS PROBLEMS
kerry.kreitman

Replies: 14
Views: 15934

PostForum: XANSYS   Posted: Mon Jun 02, 2014 8:37 pm   Subject: [Xansys] NEED ADVICE FOR NONLINEAR SOLUTIONS PROBLEMS
I ran your code a couple of times and it looks like it does fine until just over the 86000 Newton failure load you expected (time = 0.91 or so). If you stop it at that point, does the deflected shape ...
  Topic: NEED A ADVICE FOR NONLINEAR SOLUTIONS PROBLEMS
kerry.kreitman

Replies: 14
Views: 15934

PostForum: XANSYS   Posted: Sun Jun 01, 2014 6:15 pm   Subject: NEED A ADVICE FOR NONLINEAR SOLUTIONS PROBLEM
Hi Siva,

I don't have a lot of experience with nonlinear analysis in ANSYS and am currently going through a learning period of my own with it (as you may have noticed from a very recent post from m ...
  Topic: [STRUC] [APDL] Advice for solving nonlinear problems
kerry.kreitman

Replies: 8
Views: 11203

PostForum: XANSYS   Posted: Sat May 31, 2014 11:32 am   Subject: [STRUC] [APDL] Advice for solving nonlinear problems
Thanks for the responses everyone. I'll continue investigating the best solution options for my analyses based on your suggestions.

One additional question: I've been using the sparse direct solve ...
  Topic: [STRUC] [APDL] Advice for solving nonlinear problems
kerry.kreitman

Replies: 8
Views: 11203

PostForum: XANSYS   Posted: Tue May 27, 2014 5:27 pm   Subject: [Xansys] [STRUC] [APDL] Advice for solving nonlinear problem
Thanks Harish and Patrick for the responses.

Harish: Increasing the number of substeps (500) seems to be helping. Once I get the model more refined, I will try increasing that value further. Do y ...
  Topic: [STRUC] [APDL] Advice for solving nonlinear problems
kerry.kreitman

Replies: 8
Views: 11203

PostForum: XANSYS   Posted: Mon May 26, 2014 3:59 pm   Subject: [STRUC] [APDL] Advice for solving nonlinear problems
Hello all,

I'm looking for some advice on reducing convergence issues for nonlinear (material) problems under repeated loading into the inelastic / nonlinear range. I am working on analyzing a ste ...
  Topic: [Xansys] - Non linear material model of Concrete
kerry.kreitman

Replies: 11
Views: 8095

PostForum: XANSYS   Posted: Fri May 16, 2014 2:06 pm   Subject: RE: [Xansys] - Non linear material model of Concrete
Try using SOLID65 elements instead. I don't think the concrete material model is compatible with SOLID45.

Something like this may work better:

ET,1,SOLID65
MP,EX,1,30000 ! Young's mod ...
  Topic: [APDL] [STRUC] Changing solution options between load steps
kerry.kreitman

Replies: 4
Views: 8553

PostForum: XANSYS   Posted: Wed May 14, 2014 7:09 am   Subject: Re: [APDL] [STRUC] Changing solution options between load st
Good idea Caroline. I may try that as well. Thanks!
  Topic: [APDL] [STRUC] Changing solution options between load steps
kerry.kreitman

Replies: 4
Views: 8553

PostForum: XANSYS   Posted: Tue May 13, 2014 4:02 pm   Subject: Re: [APDL] [STRUC] Changing solution options between load st
Thanks Mark - its always good to hear from a fellow Longhorn :)

I ended up changing it to NSUBST,2,50,2, because some of the load steps still took more iterations. Now its down to 3-5 substeps ins ...
  Topic: [APDL] [STRUC] Changing solution options between load steps
kerry.kreitman

Replies: 4
Views: 8553

PostForum: XANSYS   Posted: Tue May 13, 2014 2:33 pm   Subject: [APDL] [STRUC] Changing solution options between load steps
Hello all,

I have a question about defining solution options and then changing them between load steps. I am trying to run several sequential static analyses that can be summarized as:

(1) Appl ...
  Topic: [APDL] Print ETABLE data to file and open in Excel
kerry.kreitman

Replies: 1
Views: 5697

PostForum: XANSYS   Posted: Mon Feb 03, 2014 2:43 pm   Subject: [APDL] Print ETABLE data to file and open in Excel
Hello all,

I'm trying to output some results from ANSYS (Mechanical APDL, v14.5) into a file that I can then read into Excel for further post-processing. I've done this in two ways - the first is ...
 
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