Requesting output for Nastran analyses

You use a Structural Output Requests, Thermal Output Requests, Acoustic Output Requests, Vibro-Acoustic Output Requests, or Vibro-Acoustic Transfer Vector Response Output Requests modeling object to request the types of output the software lists to the .f06, .op2, or punch file .pch when you solve your Nastran solution. When you create an output request, you select each type of result you want the solver to output. Each individual output type corresponds to a Nastran Case Control command. When you enable an output request, the software creates the corresponding Case Control entry in the Case Control section of your Nastran input file. For example, if you want the software to output applied loads, select the Enable OLOAD Request option.

Types of output available

The pages on the Structural Output Requests, Thermal Output Requests, Acoustic Output Requests, Vibro-Acoustic Output Requests, and Vibro-Acoustic Transfer Vector Response Output Requests dialog boxes let you select specific output types as well as options to control each output type. For more information on the dialog box options, see Structural, FRF, and Thermal Output Requests dialog boxes (Nastran), Acoustic Output Requests and Vibro-Acoustic Output Requests dialog boxes (Simcenter Nastran), and Vibro-Acoustic Transfer Vector Response Output Requests dialog box.

Output request type	Applicable analysis type	Corresponding Nastran case control command	Description
Acceleration	Structural	ACCELERATION	Requests acceleration vector output.
Acoustic Intensity	AcousticVibro-Acoustic	ACINTENSITY	Requests acoustic intensity output at microphone points in acoustic and vibro-acoustic analyses.
Acoustic Particle Velocity	AcousticVibro-Acoustic	ACVELOCITY	Requests particle velocity output.
Acoustic Power	AcousticVibro-Acoustic	ACPOWER	Requests acoustic power output.
Acoustic Pressure	AcousticVibro-Acoustic	PRESSURE	Requests acoustic pressure output.
Acoustic Transmission Loss	AcousticVibro-Acoustic	INPOWERTRPOWERTRLOSS	Requests acoustic incident power, transmitted power, and transmission loss output. Simcenter Nastran calculates the acoustic transmission loss from the INPOWER and TRPOWER results.
Aerodynamic Force	Structural	AEROF	Requests aerodynamic load output
Aerodynamic Pressure	Structural	APRESSURE	Requests aerodynamic pressure output
Applied Load	StructuralThermal	OLOAD	Requests applied load vector output.
Bolt Results	Structural	BOLTRESULTS	Requests axial force, bending moment, shear force, and axial strain for each specified bolt for Simcenter Nastran SOL 401 and SOL 402 analyses.
Cohesive Element Results	Structural	CZRESULTS	Requests cohesive element results at corner nodes for Simcenter Nastran SOL 401 and SOL 402 analyses.
Contact Result	Structural	BCRESULTS	Requests contact results for Simcenter Nastran SOL 101, SOL 402, SOL 601, and SOL 701 analyses.
Creep Strain	Structural	CRSTRN	Requests creep strain at nodes for Simcenter Nastran SOL 401 and SOL 402 analyses.
Cross-Power Spectral Density/Cross-Correlation Function	StructuralAcousticVibro-Acoustic	RCROSS	Requests computation and output of cross-power spectral density and cross-correlation functions.
Displacement	StructuralAcousticVibro-Acoustic	DISPLACEMENT	Requests displacement output.
Elastic Strain	Structural	ELSTRN	Requests elastic strain output at nodes for Simcenter Nastran SOLs 401 and 402. Requests elastic strain for SOLs 101, 103, 105, 106, 107-112.
Energy Balance	Structural	SEKETAB	Requests strain energy and kinetic energy output for SOL 414,110 and SOL 414,111.
Enthalpy	Thermal	ENTHALPY	Requests enthalpy vector output in transient heat transfer analyses (SOL 159).
Equivalent Radiated Power	Vibro-Acoustic	ERP	Requests calculation and output of equivalent radiated power for selected panels and their shell elements.
Flux	Thermal	FLUX	Requests heat transfer gradient and flux output for heat transfer analyses.
Force	StructuralAcousticVibro-Acoustic	FORCE	Requests element force output.
Gasket Results	Structural	GKRESULTS	Requests the output of gasket results for SOLs 402 and 601 (SOL 601,106 Advanced Nonlinear Statics and SOL 601,129 Advanced Nonlinear Transient) analyses. Gasket results include gasket pressure, gasket closure, plastic gasket closure, gasket yield stress, and gasket status.
Glue Result	Structural	BGRESULTS	Requests the output of glue results With the BGRESULTS command, Simcenter Nastran calculates and stores glue tractions at the nodes that are located on the glued surfaces. The glue tractions, which are similar to contact results, are calculated and stored at the nodes that are located on the glue surfaces. The normal component of the tractions is a scalar value while the in-plane (tangential) tractions are output in the basic coordinate system.Note: For surfaces on which you have created an Edge-to-Surface Gluing definition, Simcenter Nastran recovers only point forces and not surface tractions.
Grid Contribution	Vibro-Acoustic	GRDCON	Request output of structural node (grid) contributions to the acoustic response.
Grid Point Force	Structural	GPFORCE	Requests grid point (node) forces at selected node locations.
Grid Point Temperature	Structural	OTEMP	Requests grid point temperature output on for SOLs 401, 402, and 414.
Kinetic Energy	Structural	EKE	Requests kinetic energy output for selected elements.
Modal Effective Mass	Structural	MEFFMASS	Requests output of modal effective mass, modal participation factors, and modal effective mass fractions in normal modes analyses.
Modal Contribution	AcousticVibro-Acoustic	MODCON	Requests output of structural modes, fluid (acoustic) modes, frequencies, and pressure modes on microphones in contribution analyses.
MPC Forces	Structural	MPCFORCES	Requests multipoint force of constraint vector output.
Nonlinear Stress	Structural	NLSTRESS	Requests the output of nonlinear element stresses for SOL 106 Nonlinear Statics analyses.
Panel Contribution	Vibro-Acoustic	PANCON	Requests frequencies, panels, and microphone contributions to pressure responses in contribution analyses.
Peak output	StructuralVibro-Acoustic	PEAKOUT	Requests output at the frequencies where the peak responses occur in frequency response analysis.For more information, see Limiting frequency response output to peak responses.
Plastic Strain	Structural	PLSTRN	Requests plastic strain at nodes for Simcenter Nastran SOL 401 and SOL 402 analyses.
Progressive Failure Results	Structural	PFRESULTS	Requests progressive failure results output for composite shell and solid elements for Simcenter Nastran SOL 401 and SOL 402 analyses.
Rate of Change of Enthalpy	Thermal	HDOT	Requests the output of the rate of change of enthalpy vector output in transient heat transfer analyses (SOL 159).
Residual Vector	Structural	RESVEC	Requests the computation of residual vectors.
Shell Thickness	Structural	SHELLTHK	Requests the output of shell element thickness values for SOL 402, SOL 601, and SOL 701 analyses.Note: Simcenter Nastran outputs shell thickness results only for large strain analyses (analyses in which you include the parameter PARAM, LGSTRN, 1). In Pre/Post, to set this parameter, select the Large Strains check box on the Parameters page of the Create Solution or Edit Solution dialog box.
SPC Forces	StructuralThermal	SPCFORCES	Requests single point force of constraint vector output.
Strain	Structural	STRAIN	Requests strain output.
Strain Energy	Structural	ESE	Requests strain energy output for selected elements.
Stress	Structural	STRESS	Requests stress output.
Thermal	Thermal	THERMAL	Requests temperature output.
Thermal Strain	Structural	THSTRN	Requests thermal strain output at nodes on elements for Simcenter Nastran SOL 401 and SOL 402 analyses. Requests thermal strain output at nodes on composite shell elements for SOL 101 and SOL 106 analyses.
Velocity	Structural	VELOCITY	Requests velocity vector output.

Customer defaults settings to control output request defaults

Customer Defaults options let you control which output requests are selected by default in the Structural Output Requests, Thermal Output Requests, Acoustic Output Requests, Vibro-Acoustic Output Requests, or Vibro-Acoustic Transfer Vector Response Output Requests dialog boxes. For example, if you are always interested in the displacement and stress results of your model in structural analyses, you can select Displacement and Stress in the Nastran Output Requests defaults. When you create a new Structural Output Request, those types of output are selected by default.

Where do I find it?

Application	Pre/Post
Prerequisite	A Simulation file as the work part and displayed partSimcenter Nastran or MSC Nastran as the specified solver
Command Finder	Modeling Objects
Location in dialog box	Type list→Structural Output RequestsThermal Output RequestsAcoustic Output RequestsVibro-Acoustic Output RequestsVibro-Acoustic Transfer Vector Response Output Requests****PEAKOUT Criteria

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Requesting output for Nastran analyses, Simcenter 3D 2021.1 Series

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