Results Output by OptiStruct
The tables in this section summarize the results output for different analysis types. They show the formats available for each result and the I/O Option Entry that controls the output of the result.
 H3D
 Hyper3D format (.h3d file
 HM
 HyperMesh format (.res file)
 OP2
 Nastran Output2 format (.op2 file)
 PCH
 Nastran Punch format (.pch file)
 OPT
 OptiStruct ASCII format (multiple files)
 PAT
 Patran and AlternativePatran formats (multiple files)
 H3D (MBD)
 Hyper3D format for body results (_mbd.h3d file)
 MRF
 Multibody results file (_mbd.mrf file)
 HDF5
 Hierarchical data format (.h5 file)
Linear Static Analysis and Nonlinear Static Analysis Results
H3D  HM  OP2  PCH  OPTI  PAT  HDF5  Controlling I/O Option  

Nodal Displacements  ✓  ✓  ✓  ✓  ✓  ✓  ✓  DISPLACEMENT 
Element Strain Energy  ✓  ✓  ✓  ✓  ESE  
Element Stresses^{4}  ✓  ✓  ✓  ✓  ✓  ✓  ✓  STRESS / ELSTRESS 
Element Strains ^{4}  ✓  ✓  ✓  ✓  ✓  ✓  STRAIN  
Ply Stresses  ✓  ✓  ✓  ✓  ✓  ✓  CSTRESS  
Composite Failure Indices  ✓  ✓  ✓  ✓  CFAILURE  
Ply Strains  ✓  ✓  ✓  ✓  ✓  ✓  CSTRAIN  
Element Forces  ✓  ✓  ✓  ✓  ✓  ✓^{#}  FORCE / ELFORCE  
Failure output for elements  ✓  FAILURE  
Grid Point Stresses  ✓  ✓  ✓  ✓  GPSTRESS / GSTRESS  
SPC Forces  ✓  ✓  ✓  ✓  ✓^{#}  SPCFORCE  
MPC Forces  ✓  ✓  ✓  ✓  ✓^{#}  MPCFORCE  
Grid Point Forces  ✓  ✓  ✓  ✓  ✓^{#}  GPFORCE  
Applied Loads  ✓  ✓  ✓  ✓  ✓^{#}  OLOAD  
Contact Force and Pressure  ✓  ✓  CONTF  
Total Force  ✓  TOTALFORCE 
# Available only for Linear Static Analysis
Linear Steadystate Heat Transfer Analysis Results
Linear Transient Heat Transfer Analysis Results
Normal Modes Analysis Results
H3D  HM  OP2  PCH  OPTI  PAT  HDF5  Controlling I/O Option  

Eigenvectors  ✓  ✓  ✓  ✓  ✓  ✓  ✓  DISPLACEMENT 
Element Kinetic Energy  ✓  ✓  ✓  ✓  EKE  
Element Strain Energy  ✓  ✓  ✓  ✓  ESE  
Grid Point Energy  ✓  GPKE  
Grid Point Stress  ✓  ✓  GPSTRESS / GSTRESS  
Element Stresses ^{4}  ✓  ✓  ✓  ✓  ✓  ✓  STRESS / ELSTRESS  
Element Strains ^{4}  ✓  ✓  STRAIN  
Element Forces  ✓  FORCE / ELFORCE  
SPC Forces  ✓  ✓  ✓  ✓  SPCFORCE  
MPC Forces  ✓  ✓  ✓  ✓  MPCFORCE  
Grid Point Forces  ✓  ✓  ✓  ✓  GPFORCE  
Nodal Pressures (Fluid)  ✓  ✓  ✓  PRESSURE  
Ply Stresses  ✓  CSTRESS  
Ply Strains  ✓  CSTRAIN 
Complex Eigenvalue Analysis Results
H3D  OP2  PCH  Controlling I/O Option  

Eigenvectors  ✓  ✓  ✓  DISPLACEMENT 
Linear Buckling Analysis Results
H3D  HM  OP2  PCH  OPTI  HDF5  Controlling I/O Option  

Eigenvectors  ✓  ✓  ✓  ✓  ✓  ✓  DISPLACEMENT 
Aeroelastic Divergence Analysis Results
Result  H3D  OP2  PCH  Controlling I/O Option 

Eigenvectors  ✓  ✓^{#}  ✓^{#}  DISPLACEMENT 
Element Energy Loss Per Cycle  ✓  ✓^{#}  EDE  
Element Kinetic Energy  ✓  ✓^{#}  EKE  
Element Strain Energy  ✓  ✓^{#}  ESE 
# In aeroelastic divergence analysis with multiple Mach numbers, only H3D output is available.
Aeroelastic Flutter Analysis
Result  H3D  OP2  PCH  Controlling I/O Option 

Displacements  ✓  ✓  ✓  DISPLACEMENT 
Modal Participation Displacements*  ✓  ✓^{#}  SDISPLACEMENT 
* SDISPLACEMENT output is available only for K, PK and PKNL methods of aeroelastic flutter analysis.
# PCH output for SDISPLACEMENT is available only in sorting = SORT1.
Frequency Response Analysis Results
H3D  HM  OP2  PCH  OPT  XYPUNCH  Controlling I/O Option  

Nodal Displacements  ✓  ✓  ✓  ✓  ✓  ✓  DISPLACEMENT 
Modal Participation Displacements  ✓  ✓  ✓  SDISPLACEMENT  
Element Energy Loss Per Cycle  ✓  ✓  ✓  EDE  
Element Kinetic Energy  ✓  ✓  ✓  EKE  
Element Strain Energy  ✓  ESE  
Nodal Velocities  ✓  ✓  ✓  ✓  ✓  ✓  VELOCITY 
Modal Participation Velocities  ✓  ✓  ✓  SVELOCITY  
Nodal Accelerations  ✓  ✓  ✓  ✓  ✓  ✓  ACCELERATION 
Modal Participation Accelerations  ✓  ✓  ✓  SACCELERATION  
Element Stresses ^{4}  ✓  ✓  ✓  ✓  ✓  ✓  STRESS / ELSTRESS 
Element Strains ^{4}  ✓  ✓  ✓  ✓  ✓  ✓  STRAIN 
Modal Stresses ^{3}  ✓  ✓  ✓  STRESS / ELSTRESS  
Modal Strains ^{3}  ✓  ✓  ✓  STRAIN  
Element Forces  ✓  ✓  ✓  ✓  ✓  ✓  FORCE / ELFORCE 
SPC Forces  ✓  ✓  ✓  ✓  SPCFORCE  
MPC Forces  ✓  ✓  MPCFORCE  
Grid Point Forces  ✓  ✓  ✓  ✓  GPFORCE  
Grid Point Stresses  ✓  ✓  GPSTRESS / GSTRESS  
Power Flow Field  ✓  POWERFLOW  
Ply Stresses  ✓  CSTRESS  
Ply Strains  ✓  CSTRAIN  
Sound Power  ✓  
Sound Intensity  ✓  SINTENS  
Sound Pressure Level  ✓  SPL  
Applied Load Vectors  ✓  ✓  ✓  ✓  OLOAD  
Composite Failure Indices  ✓  CFAILURE 
Coupled Frequency Response Analysis of Fluidstructural Models (Acoustic Analysis) Results
H3D  OP2  PCH  Controlling I/O Option  

Nodal Displacements  ✓  ✓  ✓  DISPLACEMENT 
Modal Participation Displacements  ✓  ✓  ✓  SDISPLACEMENT 
Nodal Velocities  ✓  ✓  ✓  VELOCITY 
Modal Participation Velocities  ✓  ✓  ✓  SVELOCITY 
Nodal Accelerations  ✓  ✓  ✓  ACCELERATION 
Modal Participation Accelerations  ✓  ✓  ✓  SACCELERATION 
Nodal Pressures (Fluid)  ✓  ✓  ✓  PRESSURE 
Element Stresses ^{4}  ✓  ✓  ✓  STRESS / ELSTRESS 
Element Strains ^{4}  ✓  ✓  ✓  STRAIN 
Element Forces  ✓  ✓  ✓  FORCE / ELFORCE 
SPC Forces  ✓  ✓  ✓  SPCFORCE 
MPC Forces  ✓  ✓  MPCFORCE  
Grid Point Forces  ✓  ✓  ✓  GPFORCE 
Power Flow Field  ✓  POWERFLOW  
Ply Stress  ✓  CSTRESS  
Ply Strain  ✓  CSTRAIN 
Transient Analysis Results
H3D  HM  OP2  PCH  OPTI  Controlling I/O Option  

Nodal Displacements  ✓  ✓  ✓  ✓  DISPLACEMENT  
Modal Participation Displacements  ✓  ✓  ✓  SDISPLACEMENT  
Nodal Velocities  ✓  ✓  ✓  ✓  VELOCITY  
Modal Participation Velocities  ✓  ✓  ✓  SVELOCITY  
Nodal Accelerations  ✓  ✓  ✓  ✓  ACCELERATION  
Modal Participation Accelerations  ✓  ✓  ✓  SACCELERATION  
Element Stresses ^{4}  ✓  ✓  ✓  ✓  STRESS / ELSTRESS  
Element Strains ^{4}  ✓  ✓  ✓  ✓  STRAIN  
Failure output for elements  ✓  FAILURE  
Modal Stresses ^{3}  ✓  ✓  ✓  STRESS / ELSTRESS  
Modal Strains ^{3}  ✓  ✓  ✓  STRAIN  
Element Forces  ✓  ✓  ✓  FORCE / ELFORCE  
MPC Forces  ✓  ✓  MPCFORCE  
Ply Stresses  ✓  ✓  ✓  CSTRESS  
Ply Strains  ✓  ✓  ✓  CSTRAIN  
Composite Failure Indices  ✓  CFAILURE  
Applied Load Vectors  ✓  ✓  ✓  ✓  OLOAD 
Transient Analysis via Fourier Transformation Results
H3D  HM  OP2  PCH  OPTI  Controlling I/O Option  

Nodal Displacements  ✓  ✓  ✓  ✓  DISPLACEMENT  
Nodal Velocities  ✓  ✓  ✓  ✓  VELOCITY  
Nodal Accelerations  ✓  ✓  ✓  ✓  ACCELERATION  
Pressure (for Infinite Element Analysis)  ✓  ✓  DISPLACEMENT 
Random Response Analysis Results
OP2  PCH  H3D  HDF5  Controlling I/O Option  

Displacement (PSD, RMS and RMS (Cumulative)) 
✓ ^{#}  ✓  ✓  DISPLACEMENT, XYPEAK / XYPLOT / XYPUNCH  
Velocity (PSD, RMS and RMS (Cumulative)) 
✓ ^{#}  ✓  ✓  VELOCITY, XYPEAK / XYPLOT / XYPUNCH  
Acceleration (PSD, RMS and RMS (Cumulative)) 
✓ ^{#}  ✓  ✓  ACCELERATION, XYPEAK / XYPLOT / XYPUNCH  
Element Force (PSD and RMS) 
✓  ✓  FORCE / ELFORCE, XYPEAK / XYPLOT / XYPUNCH  
Element Stress
(PSD) 
✓  ✓  ✓  STRESS / ELSTRESS, XYPEAK / XYPLOT / XYPUNCH  
Element
Stress (RMS) 
✓  ✓ ^{1}  ✓  STRESS / ELSTRESS  
Element
Strain (PSD) 
✓  ✓  STRAIN, XYPEAK / XYPLOT / XYPUNCH^{2}  
Element
Strain (RMS) 
✓  STRAIN  
SPC Force (PSD, RMS and RMS) 
✓ ^{#}  ✓  ✓  SPCFORCE  
Composite Stress (PSD and RMS) 
✓  CSTRESS  
Composite Strain (PSD and RMS) 
✓  CSTRAIN 
# In case of .pch format, only PSD and RMS results are available
Response Spectrum Analysis Results
H3D  HM  OP2  PCH  OPTI  Controlling I/O Option  

Nodal Displacements  ✓  ✓  ✓  DISPLACEMENT  
Nodal Accelerations  ✓  ✓  ACCELERATION  
Element Stresses  ✓  ✓  ✓  STRESS / ELSTRESS  
Element Strains  ✓  ✓  STRAIN  
Element Forces  ✓  ✓  FORCE  
MPC Forces  ✓  MPCFORCE 
Multibody Dynamics Analysis Results
H3D  HM  OP2  H3D (MBD)  MRF  Controlling I/O Option  

Nodal Displacements  ✓  ✓  ✓  ✓  DISPLACEMENT  
Nodal Velocities  ✓  ✓  ✓  VELOCITY  
Nodal Accelerations  ✓  ✓  ✓  ACCELERATION  
Element Stresses ^{4}  ✓  ✓  ✓  ✓  STRESS / ELSTRESS  
Element Strains ^{4}  ✓  ✓  ✓  ✓  STRAIN  
Body time history  ✓  
System time history  ✓  
Marker time history  ✓  REQUEST  
Element and Joint Forces  ✓  MBFORCE 
Fatigue Analysis Results
CMS Generation (FlexBody Generation) Results
H3D  OP2  MNF  Controlling I/O Option  

Displacements  ✓  ✓  DISPLACEMENT  
Element Stresses  ✓  ✓  STRESS / ELSTRESS  
Element Strains  ✓  ✓  STRAIN  
Element Forces
(CBEAM/CBAR/CROD) 
✓  ✓  FORCE / ELFORCE  
Grid Point Stress (Solid elements)  ✓*  ✓*  ✓**  GPSTRESS / GSTRESS 
Grid Point Strain  ✓**  GPSTRAIN  
Multi Point Constraint Force  ✓  MPCFORCE  
Grid Point Forces  ✓  GPFORCE 
* Only output for Solid elements.
** Output for Solid and Shell elements.
CMS DMIG Residual Run (FE DMIG) Results
H3D  OP2  PCH  Controlling I/O Option  

Displacements  ✓  ✓  ✓  DISPLACEMENT 
Element Stresses  ✓  ✓  ✓  STRESS / ELSTRESS 
Element Strain  ✓  ✓  ✓  STRAIN 
Element Forces (CBEAM/CBAR/CROD)  ✓  FORCE / ELFORCE  
Grid Point Stress (Solid elements)  ✓*  GPSTRESS / GSTRESS  
Equivalent Radiated Power  ✓  ERP  
Element Strain Energy  ✓  ESE 
* Only output for solid elements.
Explicit Dynamic Analysis Results (ANALYSIS=NLEXPL)
H3D^{5}  HM  OP2  PCH  OPTI  Controlling I/O Option  

Nodal Displacements and Rotations  ✓  DISPLACEMENT  
Nodal Velocities  ✓  VELOCITY  
Nodal Accelerations  ✓  ACCELERATION  
Element Stresses  ✓  STRESS / ELSTRESS  
Element Strains (including Plastic strain) For rate dependent plasticity problems, Equivalent Strain rate and Plastic Strain rate results are output. If the problem is elastic, these values are zero. 
✓  STRAIN  
CBUSH Element Forces  ✓  FORCE / ELFORCE  
Element Strain energy and Strain energy density  ✓  ESE 
Explicit Nonlinear Analysis Results (ANALYSIS=EXPDYN)
H3D  OP2  PCH  Controlling I/O Option 
Controlling I/O Option
(Block Format) 


Nodal Displacements  ✓  ✓  DISPLACEMENT  /ANIM/VECT/DISP
/ANIM/VECT/DROT 

Nodal Velocities  ✓  ✓  VELOCITY  /ANIM/VECT/VEL  
Nodal Accelerations  ✓  ✓  ACCELERATION  /ANIM/VECT/ACC  
Element Stresses ^{4}  ✓  ✓  STRESS / ELSTRESS  /ANIM/BRICK/TENS/STRESS /ANIM/SHELL/TENS/STRESS/UPPER /ANIM/SHELL/TENS/STRESS/LOWER /ANIM/BEAM/VONM /ANIM/TRUSS/SIGX 

Element Strains ^{4}  ✓  ✓  STRAIN  /ANIM/BRICK/TENS/STRAIN
/ANIM/SHELL/TENS/STRAIN/UPPER /ANIM/SHELL/TENS/STRAIN/LOWER 

Ply Stresses  ✓  CSTRESS  /ANIM/SHELL/TENS/STRESS/N /ANIM/SHELL/TENS/STRESS/ALL 

Ply Strains  ✓  CSTRAIN  /ANIM/SHELL/TENS/STRAIN/ALL  
Composite Failure Indices  ✓  CFAILURE  N/A  
Element Forces  ✓  FORCE / ELFORCE  /ANIM/Eltyp/FORC  
Grid Point Stresses  ✓  GPSTRESS / GSTRESS  /ANIM/GPS1/TENS /ANIM/GPS1/SHELL/UPPER /ANIM/GPS1/SHELL/LOWER 

SPC Forces  ✓  ✓  ✓  SPCFORCE  /ANIM/VECT/FREAC
/ANIM/VECT/MREAC 
MPC Forces  ✓  ✓  ✓  MPCFORCE  /ANIM/VECT/FINT 
Applied Loads  ✓  ✓  ✓  OLOAD  /ANIM/VECT/FEXT 
Plastic Strain  ✓  STRAIN (PLASTIC)  /ANIM/ELEM/EPSP /ANIM/SHELL/EPSP/UPPER /ANIM/SHELL/EPSP/LOWER 

Contact Force and Pressure  ✓  ✓  CONTF  /ANIM/VECT/CONT /ANIM/VECT/PCONT 

Element Thinning and Thickness  ✓  ✓  THIN  /ANIM/ELEM/THIC /ANIM/SHELL/THIN 

Element Energy  ✓  ENERGY  /ANIM/ELEM/ENER /ANIM/ELEM/HOURG 
Optimization Results
References