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  • Users: DanStro
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  1. DanStro

    Music wire over time

    Hello, I am trying to find information about whether music wire loses its tension over time. The diameter will be ~.030" and tension would not be terribly large, similar to what is used when they are actually in a piano (~50-75lb total force). But because of the application, some vibe and...
  2. DanStro

    Simple script error

    I am trying to write a script that creates some XY data from node sets in an odb. Using the rpy file I came up with the script below. But when I try to run it I am getting an error that the name "COMPONENT" doesn't exist. As far as I can tell, from both the rpy file and the scripting section of...
  3. DanStro

    Preload change with temp help

    This seems like an easy problem but for some reason I have a mental block. I am trying to model the change in a preloaded assembly as a function of temperature. The basic situation is this: A threaded retaining ring is torqued down to get a predefined preload, at room temperature. Then the...
  4. DanStro

    Python command help

    Does anyone know if there is a script command (python) that will get the path of the currently open cae file? I know the one to get the current working directory but this isn't necessarily the place that the cae file is open. Thanks, Dan
  5. DanStro

    Current CAE directory script variable?

    Is there a way to get the path to the currently opened CAE file in a python script, not the current working directory but the CAE file. Thanks, Dan
  6. DanStro

    Hello, First off, I am new to mo

    Hello, First off, I am new to modeling vibration/dynamics in Abaqus so most likely there are some basic errors that I am making. I am trying to set up an analysis that includes setting a preload on a series of optics and then look at how that preloaded system reacts to a frequency sweep. This...
  7. DanStro

    *.sim database file error

    I am trying to run a coupled temp-displacement model in 2019 standard (i.e. not explicit) and I am getting an error saying that the 'sim' file cannot be opened. The specific error is: "SIM database file cannot be opened - No such file: C:\Abaqus Work...
  8. DanStro

    Incomplete spec?

    While I am not terribly familiar with Random Analysis I think I understand enough to start doing some basic random analysis in Abaqus. Since I am not too experienced with this I figured I'd ask here before bringing this up to the customer. I have an example customer requirement of: Random...
  9. DanStro

    Strange 6.9-1 errror message

    I am getting an error that I've never seen before and can't find any info about it in the help or on the web so I am hoping that someone can point me to the problem. The error is "***ERROR: System error in std_contactnodehash". It happens just after the step constraint checks ("COLLECTING STEP...
  10. DanStro

    Sealant for diesel exhaust environment

    I am working on an application that requires an optic system that is sealed. The system in looking at diesel exhaust and can reach a temperature of 500 degrees C. Ideally this sealant would be both an adhesive (holding the lens in place) and seal, like an RTV would do at lower temperatures...
  11. DanStro

    Metal for diesel exhaust

    I am working on a project where a housing needs to withstand the diesel exhaust environment. The main hurdle is the temperature (~500 degrees C) because the housing is somewhat isolated from the gaseous part of the environment. I've looked around and found that the most common materials are...
  12. DanStro

    Displaying Viscosity vs. Temp

    I am running a simulation of a viscoelastic material with TRS behavior in Abaqus standard. I am starting to think that the calculated viscosity vs. temperature is not correct so I want to check it at some (any) interval. Does anyone know if there is an 'easy' way to have Abaqus output the...
  13. DanStro

    Simple CTE question

    When you input a temperature dependent thermal expansion coefficient does Abaqus interpolate the coefficient for temperatures in between those that you define or are they considered constant until the next temperature you define comes up? I've tried searching in the help pages but I couldn't...
  14. DanStro

    Proper Element Choice

    Does anyone know of a site, book, or paper that gives a basic method of determining the proper element to use in common applications. For instance: some basic criteria such as when I can normally use linear elements and when I should consider going to higher order elements and when should I...
  15. DanStro

    Beginner Viscoelastic Question

    I have a bunch of test data for a viscoelastic material and I would like to distill this down to a viscoelastic model in Abaqus without using a custom material subroutine. And quite frankly I am not sure where to start. Data I have: TCE vs Temp Viscosity vs Temp Cp vs Temp For now I can ignore...
  16. DanStro

    Monte Carlo Question

    I work with optical designers and as one of the checks for expected performance they perform a monte carlo simulation of the system they are designing. Normally these systems have a fair number of variables that are being simulated (usually ~100) simultaneously. Each one is changed, within...
  17. DanStro

    Temperature Dependent Viscoelasticity (Beginner Question)

    I am still a relative beginner with Abaqus so I apologize if this is a dumb question. I am trying to model a chunk of glass that is heated up to a temperature above its transition temperature, but less than the melting temperature. So it should act like a viscoelastic material at these high...
  18. DanStro

    Beginner Python Script Problem

    I am just learning Abaqus (both main program and scripting) so I will apologize ahead of time if this is a dumb question. I have written the script below to create an axisymmetric part that I will then use Abaqus to analyze. But when it gets to the last line of the code I get the error "Shell...
  19. DanStro

    Will Visual Studio 2008

    We are just about to purchase a seat of Abaqus and the sys req say that we need Visual C++ 2005. I can't find any company that I have dealt with before, and hence trust, that is still selling this. Everyone is selling 2008. Does anyone know if this will work? I have read that the new Visual...
  20. DanStro

    FEA Program to Learn

    I am currently working for a company that, despite my urging, doesn't see a need for in-house FEA. I think it is a good skill to have and the piece of mind that it would provide if the FEA results were in line with hand calculation would be nice too. So I am thinking of purchasing my own copy...

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