Strategy Parameters dialog box

The options in this dialog box correspond to the fields of the NXSTRAT bulk data entry. See the NXSTRAT entry in the Simcenter Nastran Quick Reference Guide for more information on these options.

Name and Description
Name	Defines the modeling object's name.
Label	Specifies a unique numerical identifier for the modeling object.
Description	Enter a brief description or click to open a text editor where you can enter a longer description.
Preview NXSTRAT card	Click Preview to preview the format of the associated NXSTRAT bulk data entry based on the options you have selected.
Analysis Control
Solver to Use	SOLVER field in the NXSTRAT bulk data entry.
Automatic Incrementation Scheme	AUTO field in the NXSTRAT bulk data entry.
Positive Definite Matrix	NPOSIT field in the NXSTRAT bulk data entry.
Mass Type	MASSTYP field in the NXSTRAT bulk data entry.
Analysis Options
Integration Order t-Direction	TINT field in the NXSTRAT bulk data entry.
Use Incompatible Modes (CQUAD4)	ICMODE field in the NXSTRAT bulk data entry.
Stiffness Matrix Stabilization	MSTAB field in the NXSTRAT bulk data entry.
Matrix Stabilization Factor	MSFAC field in the NXSTRAT bulk data entry.
Element Death Time Delay	DTDDELAY field in the NXSTRAT bulk data entry.
Shell DOF Angle	SDOFANG field in the NXSTRAT bulk data entry.
Shell Drilling Stiffness Factor	DRILLKF field in the NXSTRAT bulk data entry.
u/p Formulation	UPFORM field in the NXSTRAT bulk data entry.
Large Strain Formulation (CQUAD4)	ULFORM field in the NXSTRAT bulk data entry.
Prescribed Displacements Option	DISPOPT field in the NXSTRAT bulk data entry.
Prescribed Loads Option	LOADOPT field in the NXSTRAT bulk data entry.
Maximum Displacement Limit	MAXDISP field in the NXSTRAT bulk data entry.
Elastic Beam Formulation Algorithm	BEAMALG in the NXSTRAT bulk data entry.Lets you select the beam algorithm to use for elastic beam formulations.Select Current to use the most current formulation. This formulation is always used for elasto-plastic beam elements.Select Old (v8.5 to use the previous formulation.
Time Integration
Time Integration Method	TINTEG field in the NXSTRAT bulk data entry.
Newmark Alpha Coefficient	ALPHA field in the NXSTRAT bulk data entry.
Newmark Delta Coefficient	DELTA field in the NXSTRAT bulk data entry.
TLA Scheme (Total Load Application Scheme)
Number of Time Steps	TLANSTP field in the NXSTRAT bulk data entry.
Maximum Number of Equilibrium Iterations	TLAMXIT field in the NXSTRAT bulk data entry.
Maximum Displacement Factor	TLAMXDF field in the NXSTRAT bulk data entry.
Stiffness Matrix Stabilization Factor	TLASTBF field in the NXSTRAT bulk data entry.
Low-Speed Dynamics Damping Factor	TLALSDF field in the NXSTRAT bulk data entry.
Low-Speed Dynamics Inertia Factor	TLALSMF field in the NXSTRAT bulk data entry.
Contact Damping Factor	TLACTDF field in the NXSTRAT bulk data entry.
Contact
Impact Control Scheme	IMPACT field in the NXSTRAT bulk data entry.
Iterations for Pairing	NSUPP field in the NXSTRAT bulk data entry.
Type of Contact Segment	CSTYPE field in the NXSTRAT bulk data entry.
Default Displacement Formulation	CTDISP field in the NXSTRAT bulk data entry.
Rigid-Target Algorithm	RTALG field in the NXSTRAT bulk data entry.
Friction Algorithm	FRICALG field in the NXSTRAT bulk data entry.
Tensile Contact Forces	TNSLCF field in the NXSTRAT bulk data entry.
Stabilization Damping	CTDAMP field in the NXSTRAT bulk data entry.
Normal Stabilization Damping Coefficient	CTDAMPN field in the NXSTRAT bulk data entry.
Tangential Stabilization Damping Coefficient	CTDAMPT field in the NXSTRAT bulk data entry.
Restart
Mode of Execution	MODEX field in the NXSTRAT bulk data entry.
Solution Starting Time	TSTART field in the NXSTRAT bulk data entry.
Frequency of Saving Analysis Results	IRINT field in the NXSTRAT bulk data entry.
Other
Number of Sub-Groups	NSUBGRP field in the NXSTRAT bulk data entry.
Stress-Strain Table Extension	XTCURVE field in the NXSTRAT bulk data entry.
Stress-Strain Table Conversion	CVSSVAL field in the NXSTRAT bulk data entry.
Results-Coordinate System	ELRESCS field in the NXSTRAT bulk data entry.
Bolt Pre-Load Steps	BOLTSTP field in the NXSTRAT bulk data entry.
Translation
Element Conversion (Extra Middle Nodes)	ELCV field in the NXSTRAT bulk data entry.
RBAR Elements Option	EQRBAR field in the NXSTRAT bulk data entry.
RBE2 Elements Option	EQRBE2 field in the NXSTRAT bulk data entry.
RBAR/RBE2 Spring Stiffness	SPRINGK field in the NXSTRAT bulk data entry.
RBAR/RBE2 Young's Modulus	BEAME field in the NXSTRAT bulk data entry.
RBAR/RBE2 Area	BEAMA field in the NXSTRAT bulk data entry.
RBAR/RBE2 Critical Length	RBLCRIT field in the NXSTRAT bulk data entry.
Use generalized constraints for MPCs	GENMPC field in the NXSTRAT bulk data entry.
SOL 701 TIME STEPPING
Time Step Method	XSTEP field in the NXSTRAT bulk data entry.
Critical Time Step Size Calculation	XDTCAL field in the NXSTRAT bulk data entry.
Critical Time Step Size Factor	XDTFAC field in the NXSTRAT bulk data entry.
Mass Scale Factor	XMSCALE field in the NXSTRAT bulk data entry.
Minimum Time Step for Mass Scaling	XDTMIN1 field in the NXSTRAT bulk data entry.
Minimum Time Step Size for Element Removal	XDTMIN2 field in the NXSTRAT bulk data entry.
Iterative Solver
Maximum Iterations Allowed to Converge	ITEMAX field in the NXSTRAT bulk data entry.
Convergence Tolerance EPSIA	EPSIA field in the NXSTRAT bulk data entry.
Convergence Tolerance EPSIB	EPSIB field in the NXSTRAT bulk data entry.
Convergence Tolerance EPSII	EPSII field in the NXSTRAT bulk data entry.
Equilibrium
Use Line Searches	LSEARCH field in the NXSTRAT bulk data entry.
Lower Bound for Line Search	LSLOWER field in the NXSTRAT bulk data entry.
Upper Bound for Line Search	LSUPPER field in the NXSTRAT bulk data entry.
Plasticity Algorithm	PLASALG field in the NXSTRAT bulk data entry.
Maximum Iterations per Time Step	MAXITE field in the NXSTRAT bulk data entry.
Convergence Criteria Based on	CONVCRI field in the NXSTRAT bulk data entry.
Relative Energy Tolerance	ETOL field in the NXSTRAT bulk data entry.
Relative Force Tolerance	RTOL field in the NXSTRAT bulk data entry.
Reference Force	RNORM field in the NXSTRAT bulk data entry.
Reference Moment	RMNORM field in the NXSTRAT bulk data entry.
Relative Contact Force Tolerance	RCTOL field in the NXSTRAT bulk data entry.
Relative Displacement Tolerance	DTOL field in the NXSTRAT bulk data entry.
Reference Translation	DNORM field in the NXSTRAT bulk data entry.
Reference Rotation	DMNORM field in the NXSTRAT bulk data entry.
Line Search Convergence Tolerance	STOL field in the NXSTRAT bulk data entry.
Reference Contact Force	RCONSM field in the NXSTRAT bulk data entry.
Line Search Energy Threshold	ENLSTH field in the NXSTRAT bulk data entry.
ATS Scheme Automatic Time Stepping Scheme)
Smallest Time Step Size Number	ATSSUBD field in the NXSTRAT bulk data entry.
Maximum Time Step Size Factor	ATSMXDT field in the NXSTRAT bulk data entry.
Post-Convergence Time Step Size Flag	ATSNEXT field in the NXSTRAT bulk data entry.
Division Factor	ATSDFAC field in the NXSTRAT bulk data entry.
Low-Speed Dynamics	ATSLOWS field in the NXSTRAT bulk data entry.
Dynamics Factor	Appears only if you choose Is Performed from the Low Speed Dynamics list.ATSDAMP field in the NXSTRAT bulk data entry.
LDC Scheme (Load Displacement Control Scheme)
Specify Grid Point for Prescribed Displacement	LDCGRID field in the NXSTRAT bulk data entry.
Grid Point ID	Appears only if you select Specify Grid Point for Prescribed Displacement.LDCGRID field in the NXSTRAT bulk data entry.
Degree of Freedom	Appears only if you select Specify Grid Point for Prescribed Displacement.LDCDOF field in the NXSTRAT bulk data entry.
Maximum Prescribed Displacement	Appears only if you select Specify Grid Point for Prescribed Displacement.LDCDISP field in the NXSTRAT bulk data entry.
Displacement Convergence Factor	LDCIMAX field in the NXSTRAT bulk data entry.
Maximum Allowed Displacement	Appears only if you select Specify Grid Point for Prescribed Displacement.LDCDMAX field in the NXSTRAT bulk data entry.
Critical Point Reached	LDCCONT field in the NXSTRAT bulk data entry.
Maximum Arc Length Subdivisions	LDCSUBD field in the NXSTRAT bulk data entry.

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Strategy Parameters dialog box, Simcenter 3D 2021.1 Series

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