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ChangeLog: SoS (Statistics on Structures)

Version 7.0.0, June 2018

  • New features
    • Free-form shape optimization
    • SoS for ANSYS: Apply mesh morphing inside ANSYS Mechanical
    • Standalone SoS ROM Viewer for 3D variation analysis
    • Direct visualization of changes in geometry and their invoked changes in structural performance (stresses, strains etc.)
    • New algorithm for estimating F-CoP[Total] and sensitivity indices in FMOP
    • New backend (beta option) for approximation model with FMOP
  • Improvements
    • Support for components (node sets, element sets)
    • Interactive variation analysis in 3D for random fields and FMOP (using sliders)
    • Improved graphics (GUI and engine)
    • Free-form variation models for synthetic localized variations
    • Better stabilization algorithms for geometric imperfections
    • Photographic analysis: Autoscale images of different resolution
    • New export formats usable by ANSYS WB External Data
    • Add support for quadratic tetrahedra in Abaqus INP format
    • Add ability to query FEM mesh connectivity from script and in FMOPSolver lib API
  • Notes
    • Changes in binary data format SDB
    • Formula for computing amplitudes from field data changed and may produce different results compared with older versions

Version 3.3.4, Jan 2018

  • Improvements
    • Changes to FMOPSolver lib API for MATLAB(TM) compatibility
  • Bug fixes
    • Output order of CSV field data export
    • Small fixes in SignalMOP post processing

Version 3.3.3, Nov 2017

  • New features
    • FMOPSolver.dll for evaluating field meta models in third-party software (Python, Matlab etc.)
  • Improvements
    • SignalMOP Solver is now working for constant signals
    • SignalMOP does not produce NaN values for constant signals
  • Bug fixes
    • PERMAS FEM mesh file parser 
    • Small bug fixes improving stability and efficiency
  • Changes in binary format

Version 3.3.2, July 2017

  • New features
    • Standalone SoS_debug_exe environment variable calling “sos_console.exe” on MS Windows for improved debugging in terminal
  • Improvements
    • Improved formula to compute individual F-CoP values in sensitivity analysis (!)
    • Add ability to enforce positive definite Jacobians when modifying geometries
  • Bug fixes
    • Mouse pick selection on MS Windows is now working
    • ANSYS APDL Modifier did not change interior node coordinates if requested
    • Stability improvements in SignalMOP and SignalMOP-solver nodes in optiSLang
    • Fix error in standard deviation in Generate_SoS node in optiSLang
  • Changes in binary format

Version 3.3.1, May 2017

  • New features
    • Import FEM meshes and components from ANSYS CDB format
    • Improve usability in generation of deformed geometries (Now also change coordinates of interior nodes, not only on boundary)
    • Allow export of changed geometries to ANSYS DS.DAT from command as NMODIF (in favor of D,UX) allowing much simpler flows in ANSYS Workbench (using script commands)
  • Improvements
    • Improved usability of SignalMOP solver (introducing *.sim files, multiple signals in single node)
    • Improved stability of Generate_SoS node in optiSLang (path independency)
    • Extend understanding of ANSYS RST format
    • Reduced CPU time when simulating FEM field data with optiSLang
    • Extend mesh smoothening to cross-correlated displacement fields
  • Bug fixes
    • Improved stability of new graphics system
    • Fix a bug preventing usage of mesh smoothening, also fix correctness of applied direction
    • Fix a bug in optiSLang scalar import now ignoring dependent and constant parameters in SignalMOP
    • Fix some bugs in SignalMOP integration nodes in optiSLang improving stability
  •  Changes in binary format

Version 3.3.0, March 2017

  • Field data models
    • Integration of MOP in SoS for scalar responses, signal responses and other field data
    • Improved formula for computing the prognosis quality of FMOP
  • Statistics
    • Compute standard errors of statistical estimators
  • Mesh mappers
    • Automatic adjustment of coordinate systems with respect to user-specified nodes
    • Mesh mapper for incompatible signals, pixel and voxel meshes
    • Iterative strategy for robust generation of random geometries
  • Rewritten 3D graphics engine, now using:
    • Direct3d on MS Windows (TM)
    • Hardware accelerated OpenGL on Linux
  • File formats
    • Import of signals from optiSLang bin files, automatic resampling of support points
    • Rewritten Dynain importer (LS-Dyna) and exporter, enhance supported keywords
    • Import mesh and response data from ANSYS RST files (rudimentarily)
    • Import and modification of FEM meshes through Abaqus INP files
    • Import data for 2d grids through CSV files
    • Import tetrahedral meshes from VTK
  • Custom integration nodes for signal processing with SoS in optiSLang 6
    • New “SignalMOP” node for creating and evaluating an FMOP for signals
    • New “SignalMOP solver” node for approximating signals by FMOP
    • New “Generate” node for general random fields and FMOP solver

Version 3.2.1, March 2016

  • Various small improvements increasing performance, improving user experience and preventing crashes

Version 3.2.0, Dec 2015

  • New: Synthetic random field models (Generate random designs in case of only a few measurements)
  • New: Add F-MOP and F-MOP solver for signals
  • New: Generation of random signal variations
  • New: Direct export of deformed FEM meshes (e.g. mean geometries or quantile geometries)
  • New: Visualisation of random field variations
  • New: More file formats
  • New: Map between incompatible meshes along user-specified directions
  • New: Added online help system
  • Upgrade script language Lua 5.2 to 5.3
  • Fix: Use less memory in visualisation
  • Changes in binary file format

Version 3.1.91 (beta), June 2015

  • Added online help system
  • Upgrade script language Lua 5.2 to 5.3
  • Add F-MOP for signals

Version 3.1.1, June 2015

  • Improved usability of F-MOP export
  • Improved numerical efficiency of F-MOP solver and in “SoS generate” node in optiSLang

Version 3.1.0, Dec 2014

  • FEM kernel now supports linear and quadratic shell and 3D continuum elements. It further optimises memory layout for 1D, 2D and 3D grids (e.g. signals, images, voxels).
  • Visualisation introduces transparent rendering, iso surfaces, cutting planes, improvements to palette, a ruler
  • Random field models:
    - Introduce cross-correlated fields, local error measures
    - New: Field Metamodel of Optimal Prognosis (F-MOP) for sensitivity analysis of field data. Visualises field CoP directly on the FEM mesh
  •  Importer introduces algorithms for treatment of incompatible meshes
    - Project data between the reference mesh and an independently meshed design structure, including small displacements
    - Identify geometric deviations
    - Automatically translate and rotate design meshes into reference coordinate system
  • Improved integration with optiSLang:
    - Generation of field samples based on random field models
    - Automatic evaluation of F-MOP

Version 3.0.2, Sep 2014

  • New: MS Windows: Associate file extensions (script and data base files)
  • New: Allow extraction of minima and maxima from selection in visualisation (“cluster extraction”)
  • New: Visualize relative values in percent (%).
  • Fix: Enforce optiSLang compatible identifiers during export. Allow more characters during import.
  • Fix: Now use the default system file dialogs, improving user experience and performance
  • Fix: “Export scalar data to CSV” dialog returned with undesired error messages in certain situations.
  • Fix: Allow greater resolutions when importing image files. Note: Old database files containing image data will be incompatible.
  • Fix: Stability and performance improvements in visualisation
  • Changes in binary file format.

Version 3.0.1, Feb 2014

  • New: Automate simulation of random fields with optiSLang.
  • New: Export deformed geometries to STL format.
  • New: Extend supported platforms to Linux CentOS 5.4 and above.
  • Fix: MS Windows: Improve performance of graphics engine while interactively changing the camera.
  • Fix: Export of selected eroded elements to optiSLang will not take the interpolated value, but create a missing response value. Hence the eroded element will be ignored in optiSLang’s MOP solver.
  • Fix: Export of scalars to CSV and optiSLang ignored inactive/active designs. Now, only active designs will be exported.

Version 3.0.0, Dec 2013

  • New user interface, new 3D rendering engine
  • Flexible and "Easy to use" work flows
  • Embedded scripting
  • Greatly improved numerical efficiency, including multi-threading
  • Limitations on FEM mesh size for random field identification dramatically relaxed
  • No mesh coarsening any longer required
  • Algorithms for simulation of random fields
  • Detection of geometric deviations between non-matching meshes
  • Import and export of various random field data (as input or as generated data)
  • Image processing