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  • Spring element extension does not match theory.

    I'm running a basic simulation of a 0.650-tonne mass point attached to a 5000 mm long linear spring element (PSPR) with a stiffness of k =187.144 N/mm. The gravitational acceleration is set to g = 9807 mm/s². Using the formula x = m*g / k , the expected…

  • Topics for SimCompanion Articles

    We've been revamping our SimCompanion site and will start to repopulate with Dytran articles for specific How-To or clarifications. Which topics are of critical need to prioritise for the community? Preloading / Parameters / User Subroutine setup in 2016…

  • Animation examples

    Please see our demo examples for Dytran at: www.youtube.com/.../MSCSoftwareUK www.youtube.com/.../ Links (1) https://www.youtube.com/playlist?list=PL3y6rjb5KL_t6WBRUe3CKan4OkMCx9Zrp

  • Doubt about implement a pressure (time and space varying) starting from Dytran results

    I want to do an UNCOUPLED underwater explosion so: 1° step : explosion against a cylinder (euler domain + structure), where the cylinder is RIGID. After this step, I extract the pressure over time for the coupling surface of the structure;…

  • Tutorials for water pressure simulation

    Hello, I am trying to create a Dytran simulation that simulates how when washing a car you throw water at a specific velocity to a window and see how it affects a seal. Has anyone seen a tutorial similar to this scenario that can help me? . …

  • How can I make gif animations in Paraview?

    How can I make gif animations in Paraview?

  • Help with this error.... what is the meaning of it? %E-P2021602-P2XXTXIX_READ_NIF_GLOBAL, , , Illegal keyword within global section : DBFGETGR

    Help with this error.... what is the meaning of it? %E-P2021602-P2XXTXIX_READ_NIF_GLOBAL, , , Illegal keyword within global section : DBFGETGR

  • [new in Dytran] Hi, I'm creating a solver deck. in the "translation parameters" -> "card format" there are many options: small, free, either, etc... what is that about? what would be the best selection?

    [new in Dytran] Hi, I'm creating a solver deck. in the "translation parameters" -> "card format" there are many options: small, free, either, etc... what is that about? what would be the best selection?

  • %E-P4128501-P2LZTXIX_BND_ZONE_ALLOCS_LIST, , , An integer string of zero length is requested.

    I am getting this error: %E-P4128501-P2LZTXIX_BND_ZONE_ALLOCS_LIST, , , An integer string of zero length is requested. Does anybody have an idea of how to solve it or where can I look for a mistake? I have reviewed the…

  • Why is there the option of defining a Young's modulus in the MATRIG property ? If this modulus is specified, what is its effect ?

    Why is there the option of defining a Young's modulus in the MATRIG property ? If this modulus is specified, what is its effect ?

  • Are there any available tutorials which show setup of a Dytran drop test analysis?

    I am specifically looking to run a simulation of an aircraft fuselage vertical drop test. However, a tutorial for any type of drop or impact analysis with a specified initial velocity would be useful.

  • STRAIN_RATE_SPIN

    I try to run a crash analysis containing rubber material. The error below occurred during the simulation. %F-P4260601-P4LZT14_STRAIN_RATE_SPIN, , , Element 4432313 is deformed excessively. The element above belongs to…

  • Does Dytran come with Nastran 2019?

    I see several "dytran" EXEs in my Nastran 2019 directory, wondering if any of them is a full version of dytran? Took a stab at running from the command line: "C:\Program Files\MSC.Software\MSC_Nastran\2019fp1\msc20191\dytran\win64\bin\dytran…

  • Are there standard models for crash dummies that can be used in Dytran?

    I am wanting to model an aircraft seating HIC test, which uses anthropomorphic test dummies. I would like to be able to extract forces from different regions of the dummy. Is this possible within Dytran and are there standard ATD models that can be used…

  • Error: Dynamic memory allocation failed. There is not enough memory available.

    I try to run a simulation but after a while it stops and I get this error: "Cannot create dynamic subarray EUL EL FLOAT VARS. Dynamic memory allocation failed. There is not enough memory available. This can occur when your computer is…

  • "Basic FSI setup" questions for model creation and post-processing

    I have some questions about the model creation: 1) When I create the constraints for the rigid body object and I have to select the application region, I can choose any node without difference? 2) Why I have to use the function mesh generator…

  • Pressure time history

    Hello, I'm running a simulation of a body crashing in the water. There is a way to obtain the overall pressure in a time history file? For now I'm only able to obtain the pressure for every node/element but I need the pressure resultant. Any idea…

  • STEP ONE BY ONE USING DYTRAN FOR BLAST EXPLOSION ANALYSIS

    Hi all, Im new for Dytran. Based on learning and suggestion; MSC Dytran capable on doing this type of analysis. As a fresh, i will like to know STEP by STEP on preparing and simulate inside this DYTRAN. Or is there any reference…

  • Marc cosimulation

    I try to run the water spray simulation using Marc simulation result. Firtt I will simulate the intallation simulation based on the Marc. Then I will import the Marc simulation result into Dytran. Last I will run the water spray simulation…

  • Ths2Txt.exe not printing out all elements?

    Ths2Txt.exe is only printing out a certain range of elements and stops when the element number gets very high (75 million). Does anybody know a way to force it to print out these elements?

  • I am getting an error on Dytran relating to converting a token in to an integer, for a SET1 used in a contact. Are there any quick debugs I could try?

    I am getting an error on Dytran relating to converting a token in to an integer, for a SET1 used in a contact. Are there any quick debugs I could try?

  • ALE coupling

    Hello, I am trying to simulate a birdstrike using Patran as my preprocessor. At the time of creating an ALE coupling between the surface and the bird. What are the parameters which have to be used (surface, 3d elements, etc) in order to fullfill the coupling…

  • I get an error regarding spring elements when trying to run a DAT file in Dytran. (Details below)

    The error message states that spring element found with zero time step. This indicates the spring has no mass associated with it.

  • I would like to know why nastran superelement can not be applicable for explicit nonlinear case for example sol 700 according to msc super element manual could please share if there is a spesific reason ?

    I would like to know why nastran superelement can not be applicable for explicit nonlinear case for example sol 700 according to msc super element manual could please share if there is a spesific reason ?

  • Dytran 2016 Explorer has no facility to add input options (such as ATB=).

    Attempting to use a command line method to launch Dytran results in a system .dll missing error message. Has anybody got a reliable way of running Dytran (with options) from the command line? Error attached​ Attached Files (2)
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