ACCOPTION -- Specifies GPU accelerator capability options.

*AXPY -- Performs the matrix operation M2= v*M1 + w*M2 (an APDL Math operation).

CBMD -- Specifies the preintegrated mass-density matrix for composite-beam sections.

CBMX -- Specifies preintegrated cross-section stiffness for composite beam sections.

CBTE -- Specifies a thermal expansion coefficient for a composite beam section.

CBTMP -- Specifies a temperature for the composite beam matrix.

CNKMOD -- Modifies contact element key options.

*COMP -- Compresses the columns of a matrix using a specified algorithm (an APDL Math operation).

*DMAT -- Creates a dense matrix (an APDL Math operation).

*EIGEN -- Performs a modal solution with unsymmetric or damping matrices (an APDL Math operation).

*EXPORT -- Exports a matrix to a file in the specified format (an APDL Math operation).

FCTYP -- Activates or removes failure-criteria types for postprocessing.

*FREE -- Deletes a matrix or a solver object and frees its memory allocation (an APDL Math operation).

*ITENGINE -- Performs a solution using an iterative solver (an APDL Math operation).

*LSBAC -- Performs the solve (forward/backward substitution) of a factorized linear system (an APDL Math operation).

*LSENGINE -- Creates a linear solver engine (an APDL Math operation).

*LSFACTOR -- Performs the numerical factorization of a linear solver system (an APDL Math operation).

*MULT -- Performs the matrix multiplication M3 = M1(T1)*M2(T2) (an APDL Math operation).

*NRM -- Computes the norm of the specified matrix or vector (an APDL Math operation).

PERTURB -- Sets linear perturbation analysis options.

*PRINT -- Prints the matrix values to a file (an APDL Math operation).

QRDOPT -- Specifies additional QRDAMP modal analysis option.

*SMAT -- Creates a sparse matrix (an APDL Math operation).

SPDAMP -- Defines input spectrum damping in a multipoint response spectrum analysis.

SPFREQ -- Defines the frequency points for the input spectrum tables SPVAL vs. SPFREQ for multipoint spectrum analysis.

SPGRAPH -- Displays input spectrum curves for MPRS analysis.

SPVAL -- Defines multipoint response spectrum values.

SPUNIT -- Defines the type of multipoint response spectrum.

TBEO -- Sets special options or parameters for material data tables. For example, a cap creep model requires two independent creep test measurements to account for both shear-dominated creep and compaction-dominated creep behaviors. The new command allows you to define both types of creep data separately.

*VEC -- Creates a vector (an APDL Math operation).

ANTYPE -- Specifies the analysis type and restart status. For modal analysis, the REST option allows you to reuse the existing modes extracted from a previous modal analysis. In addition, the new PERTURB option specifies that a linear perturbation analysis should be performed at restart.

BF -- Defines an element body force load. The command has a new structural label (Lab = FORC) for body-force density in a momentum equation.

CMOMEGA -- Specifies the rotational velocity of an element component about a user-defined rotational axis. Spin softening is now activated by default in prestressed modal analyses when any rotational velocities are specified. The KSPIN option is no longer documented.

D -- Defines degree-of-freedom constraints at nodes. This command can be now be used to prescribe an HDSP degree-of-freedom constraint at the pressure node of hydrostatic fluid elements, HSFLD241 and HSFLD242.

EQSLV -- Specifies the type of equation solver. The automatic iterative solver option (Lab = ITER) is no longer supported. In addition, the DSPARSE solver option has been replaced with the SPARSE solver option. When the SPARSE solver option is specified, the distributed sparse solver is used in Distributed ANSYS, and the non-distributed sparse solver is used in SMP ANSYS.

ESURF -- Generates elements overlaid on the free faces of existing selected elements. The Shape = TRI option has been removed. The command no longer generates triangular facet target elements using TARGE170.

In addition, the ESURF command can now be used to generate hydrostatic fluid elements, HSFLD241 and HSFLD242. The command generates triangular (2-D) or pyramid-shaped (3-D) elements with bases that are overlaid on the faces of selected 2-D or 3-D solid or shell elements.

ETABLE -- Fills a table of element values for further processing. This postprocessing command now supports failure criteria. Also, the command now has the new label SEDN for strain energy density

ETCHG -- Changes element types to their corresponding types. For thermal-structural analyses, this command can change the new thermal elements SOLID278 and SOLID279 to their companion structural elements SOLID185 and SOLID186, respectively.

F -- Specifies force loads at nodes. The DVOL force label has been added to specify fluid mass flow rate (with units of mass/time) at the pressure node of hydrostatic fluid elements, HSFLD241 and HSFLD242.

*GET -- Retrieves a value and stores it as a scalar parameter or part of an array parameter. The command can now retrieve composite beam-section data (Entity = CMPB).

HROPT -- Specifies harmonic analysis options. The command now has a Method = AUTO option, which automatically select the most efficient method. This is the new default method.

IC -- Specifies initial conditions at nodes. The HDSP (hydrostatic pressure) degree-of-freedom has been added as a new structural label to allow specification of initial hydrostatic pressure at the pressure node of hydrostatic fluid elements, HSFLD241 and HSFLD242.

IOPTN -- Controls options relating to importing a model. For IGES import, the FACETED (RV53) option is no longer available.

LCOPER -- Performs load case operations. Use the new Oper2 = CPXMAX to calculate the maximum of derived stresses of complex results.

MODOPT -- Specifies modal analysis options. This command now features the QrdReuse field, which provides the option to reuse the block Lanczos eigenvectors from the first load step.

*MOPER -- Performs matrix operations on array parameter matrices. Additional options have been added for sorting arrays by their columns.

MSTOLE -- Adds two extra nodes from FLUID116 elements to SURF151 or SURF152 elements for convection analyses. This command now supports SURF151 elements.

NLDIAG -- Sets nonlinear diagnostics functionality. This command now reports contacting area in the Jobname.CND file when contact information is requested.

NLHIST -- Specify result items to track during solution. Contacting area can now be requested as an item to track in the Jobname.NLH file.

NROPT -- Specifies Newton-Raphson options in a static or full transient analysis. When applicable in a static creep analysis, the command now supports the modified Newton-Raphson option with a creep-ratio limit.

OCTYPE -- Defines an ocean environment using non-table data. When the specified ocean data type is “wave” (OCTYPE,,WAVE), valid wave-theory values for specifying the API (for computing particle velocities and accelerations due to waves and current) have been changed from 10+ to 101+. For further information, see Known Incompatibilities.

OMEGA -- Specifies the rotational velocity of the structure. Spin softening is now activated by default in prestressed modal analyses when any rotational velocities are specified. The KSPIN option is no longer documented.

PLESOL, PLNSOL, PRESOL, PRNSOL -- These output commands have new item and component labels for Puck and Hashin failure criteria.

PSDFRQ -- Defines the frequency points for the input spectrum tables PSDVAL vs. PSDFRQ for PSD analyses. No longer applies to multipoint spectrum analyses. (See SPFREQ.)

PSDUNIT -- Defines the type of input PSD. No longer defines the type of multipoint response spectrum. See SPUNIT.

PSDVAL -- Defines PSD spectrum values. No longer defines multipoint response spectrum values. See SPVAL.

PRENERGY -- Lists the energies of the entire model or the energies of the specified components. Formerly, the command printed the total energies of a model.

RESCONTROL -- Controls file writing for multiframe restarts. The new LINEAR option on the Action field specifies writing of restart files during a linear static analysis. This option is needed if a subsequent linear perturbation analysis is anticipated.

RSTMAC -- Calculates modal assurance criterion (MAC) and matches nodal solutions from two results files. You can now specify TolerN = -1 to map the nodes of File2 into the elements of File1. The MAC is then based on the interpolated solutions from File1. This procedure is particularly useful when comparing the modes of cyclic symmetric structures.

SECDATA -- Describes the geometry of a section. This command now supports the definition of contact sections for spherical or revolution surfaces associated with certain contact/target elements.

SECTYPE -- Associates section type information with a section ID number. The command now has support for composite (temperature-dependent) beam sections and contact sections.

SED -- Defines the excitation direction for response spectrum and PSD analyses. This command now contains the Cname field, which stores the component name corresponding to the group of excited nodes. This new field allows the definition of the excitation in the global coordinate system for MPRS or PSD analyses.

SFE -- Specifies surface loads on elements. For the SURF151 and SURF152 extra node option (KEYOPT(5) = 1), film effectiveness and free stream temperatures may now be input for convection surface loads.

SFELIST -- Lists the surface loads for elements. Film effectiveness and free stream temperatures specified by the SFE command can now be listed by this command.

SOLVE -- Starts a solution. A new Action field is available for use in linear perturbation analyses. Setting Action = ELFORM causes all appropriate element matrices to be reformed in the first phase of a linear perturbation analysis.

SPOPT -- Selects the spectrum type and other spectrum options. This command now contains the modReuseKey field. When running multiple spectrum analyses, this new key specifies that the existing MODE file is updated for reuse.

SRSS -- Specifies the square root of sum of squares mode combination method. This command now contains the AbsSumKey value, which activates the Absolute Sum combination method. This method first combines the modes for each excitation direction. It is supported in MPRS analysis.

TB -- Activates a data table for nonlinear material properties or special element input.

A new response function option for hyperelastic material constants (TB,HYPER,,,,RESPONSE) has been added. The option uses experimental data (input via the new TB,EXPE command) to determine the constitutive response functions. The response functions are used to determine the hyperelastic constitutive behavior of the material.

A new fluid material model (TB,FLUID) has been added for hydrostatic fluid elements, HSFLD241 and HSFLD242. Additional input allows you to define the material as a liquid, a gas, or a fluid represented by pressure-volume data.

The coupled-field elements PLANE223, SOLID226, and SOLID227 can now use the TB table to specify nonlinear material properties. Plasticity and viscoplasticity/creep properties are now available.

TBFT -- Performs material curve-fitting operations. The plot functionality (TBFT,PLOT) has been removed. Plotting for curve-fitting operations should be performed via the graphical user interface (GUI).

*VOPER -- Operates on two array parameters. Options have been added for performing vector or tensor (such as stress) transformations to and from the global Cartesian coordinate system to a local coordinate system.

The faceted geometry option for IGES import (IOPTN,FACET) and its defeaturing commands

The p-method

The run statistics processor /RUNSTAT

ALPFILL

ARCOLLAPSE

ARDETACH

ARFILL

ARMERGE

ARSPLIT

GAPFINISH

GAPLIST

GAPMERGE

GAPOPT

GAPPLOT

LNCOLLAPSE

LNDETACH

LNFILL

LNMERGE

LNSPLIT

PCONV

PLCONV

PEMOPTS

PEXCLUDE

PINCLUDE

PMETH

/PMETH

PMOPTS

PPLOT

PPRANGE

PRCONV

PRECISION

RALL

RFILSZ

RITER

RMEMRY

RSPEED

RSTAT

RTIMST

/RUNST

RWFRNT

SARPLOT

SHSD

SLPPLOT

SLSPLOT

VCVFILL

BELLOW

BEND

BRANCH

FLANGE

MITER

PCORRO

PDRAG

PFLUID

PGAP

PINSUL

PIPE

POPT

PPRES

PSPEC

PSPRNG

PTEMP

PUNIT

REDUCE

RUN

TEE

VALVE