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  • MSC Nastran2020を使用しています。 質問１ f06ファイルでSPCFORCE RESULTANTが出力されますが「RESULTANTS ABOUT ORIGIN OF SUPERELEMENT BASIC COORDINATE SYSTEM IN SUPERELEMENT BASIC SYSTEM COORDINATES.」座標系の原点(0,0,0)の結果でしょうか？ 質問２ SPCFORCE RESULTANTの出力結果を任意の座標値で結果を表示することはできますか？

    MSC Nastran2020を使用しています。 質問１ f06ファイルでSPCFORCE RESULTANTが出力されますが「RESULTANTS ABOUT ORIGIN OF SUPERELEMENT BASIC COORDINATE SYSTEM IN SUPERELEMENT BASIC SYSTEM COORDINATES.」座標系の原点(0,0,0)の結果でしょうか？ 質問２ SPCFORCE RESULTANTの出力結果を任意の座標値で結果を表示することはできますか…

  • How to make the rigid body move in the analysis result using SOL400

    I try to run the assembly analysis using SOL 400 I have made two contact bodies One is a deformable body whose application region has tetra mesh The other is the rigid body whose application region has 2d quad mesh The deformable body…

  • I need to implement cyclic symmetry in a model of a bolted joint in NASTRAN SOL400. It seems that the tools I would normally use - MPC / Cyclic Symmetry or MSC.Generate Repetivitive MPCs - do not work in SOL400. Is there another way?

    I need to implement cyclic symmetry in a model of a bolted joint in NASTRAN SOL400. It seems that the tools I would normally use - MPC / Cyclic Symmetry or MSC.Generate Repetivitive MPCs - do not work in SOL400. Is there another way?

  • Can Apex groups (Nastran SET3's) be imported as Patran groups?

    Can Apex groups (Nastran SET3's) be imported as Patran groups?

  • Hi all, I am performing a transient response analysis with structural damping. How do you select parameters W3 and W4 to convert structural damping to viscous damping? Thanks in advance.

    Hi all, I am performing a transient response analysis with structural damping. How do you select parameters W3 and W4 to convert structural damping to viscous damping? Thanks in advance.

  • Nastran SOL 400 error

    I am running a rubber seal using sol 400. Before the entire model run, I made a small model. there is two rigid body which is surface and deformable body which is mesh. I applied the Position condition(moving condition) to the Rigid body…

  • Dear all, I tried to do modal analysis by creating beam elements with beam cross-sectional properties. However, when the modal analysis is done I get only bending modes not the torsional modes. How could I get the torsional modes? Thanks in advance.

    Dear all, I tried to do modal analysis by creating beam elements with beam cross-sectional properties. However, when the modal analysis is done I get only bending modes not the torsional modes. How could I get the torsional modes? Thanks in advance…

  • Hello everyone, is Nastran calculating a shear modulus from Young's modulus and Poisson's ratio when I leave the value open in the bdf-file (Material: isotropic, linear elastic), or is Nastran ignoring shear stress as a result?

    I have been supplied with a bdf-file to run normal modes analysis. The material section states the value of 80769.234 for the shear modulus. I cannot find significant changes in the result after deleting this value, but I am wondering why it has been…

  • sol200; symmetry constraints in TOMVAR

    Hi! Is it possible to apply symmetry constraints with topometry optimization (TOMVAR) like it is in topology optimiazation using TOPVAR?

  • Hi everyone, I have a partner interested in learning Patran/MSC_Nastran for the aero industry. Looking an old airplane geometry and some asistance on how to do more complex analysis areas. If you have a geometry that can be shared, let me know. Tx

    Hi everyone, I have a partner interested in learning Patran/MSC_Nastran for the aero industry. Looking an old airplane geometry and some asistance on how to do more complex analysis areas. If you have a geometry that can be shared, let me know. Tx

  • I am running a sol 145 flutter analysis then looking at the deformations in PATAN. (both 2022) .. in the bad old days with param,post,0 and para,opphipa I would get the structural deformations as well as the aero deformations to compare. Not working.

    I am running a sol 145 flutter analysis then looking at the deformations in PATAN. (both 2022) .. in the bad old days with param,post,0 and para,opphipa I would get the structural deformations as well as the aero deformations to compare. Not working.

  • I am running Sol 111. I want to output element forces in a coordinate system I specify instead of local element coordinates.

    I am running SOL 111 and requesting element forces (nice to have that ability). I load the results into Patran to run RMS Analysis with the Patran Random Toolbox. The force results are in local element coordinates. Since adjacent elements often have different…

  • I am working on Sol111 analysis, i want to extract the mass of the selected elements in F06 or op2 file . Which control need to define in FE deck or is there any other procedure to extract the mass of selected elements in output. Thanks.

    I am working on Sol111 analysis, i want to extract the mass of the selected elements in F06 or op2 file . Which control need to define in FE deck or is there any other procedure to extract the mass of selected elements in output. Thanks.

  • Where can I find function and usage of the SPC-statement when it is done before the subcase definition? How does this work specially in conjunction with SOL 112 and several subcases?

    Where can I find function and usage of the SPC-statement when it is done before the subcase definition? How does this work specially in conjunction with SOL 112 and several subcases?

  • Hi everyone. I'm new doing nonlinear simuations. I tried to run a simulation with 15 subcases but in the f06 file Nastran only gives me results from the two first subcases. Then show me these messages. Is there anyway to solves the convergence issues...

  • Is it possible to create a excel confirm output with SOL103?

    When I´m using SOL103 I get all the eigenfrequence an eigenvalues in the .f06 file. I want to transform this informations into a list. Is there a possibility to create an output which I can directly import to excel?

  • Is PARAM,NOCOMPS not outputing equivalent material cards anymore?

    There used to be a time (long time ago, 25+ years) when a PARAM,NOCOMPS used to output the equivalent PSHELL/MAT to the f06... Somehow, I can't make this happen anymore... Am I remembering wrong?

  • I'm trying to run sol 111 and get back composite stresses. I would like to run MSC.Random afterwards, which means I need an xdb. For some reason, when writing to an XDB, I only get back the homogenous results.

    However, if I export to an h5 file, I see all the ply data. What am I doing wrong and how do I fix this?

  • How to run SOL 112

    I have a mdf file export from Adams Durability plugin . What am I supposed to fill in the Optional Keywords section to run SOL 112 ( modal stress recovery)? Thank for any help Attached Files (1)

  • Why negative modal participation factors?

    Why negative modal participation factors?

  • FATAL

    FATAL

  • MATRIX XAAV FOR UPSTREAM SUPERELEMENT 100 DOES NOT EXIST

    Trying to use Superelements sent over by a customer to integrate into a larger model, we're getting a "MATRIX XAAV FOR UPSTREAM SUPERELEMENT 100 DOES NOT EXIST", what is XAAV?

  • Why do I obtain no results when attaching .xdb file?

    When attaching the xdb file in Patran, I get " $# *** Begin: Attach Result File *** " The same code gives me results if I ask for a op2 file and there are no fatal errors in the f06 file. What could cause this? Thanks for you hel…

  • Hello, The usual way Nastran exports reduced matrices is by using the op2/op4/pch formats using extout method. Is it possible to export them as HDF5's?? MATLAB being my external interface to Nastran can readily read HDF5's and hence my question.

    Hello, The usual way Nastran exports reduced matrices is by using the op2/op4/pch formats using extout method. Is it possible to export them as HDF5's?? MATLAB being my external interface to Nastran can readily read HDF5's and hence my question…

  • In a sol 112 run I get the message although the mentioned grid point is defined: *** USER FATAL MESSAGE 2008 (GP3) LOAD SET 1049 REFERENCES UNDEFINED GRID POINT 2 The grid point also exists in the op2-file of the broken simulation.

    In a sol 112 run I get the message although the mentioned grid point is defined: *** USER FATAL MESSAGE 2008 (GP3) LOAD SET 1049 REFERENCES UNDEFINED GRID POINT 2 The grid point also exists in the op2-file of the broken simulation.
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