FEMaster 2.7.0

Keywords [--format femaster]

• Added *PART, *END PART, *ASSEMBLY, *END ASSEMBLY, *INSTANCE and *END INSTANCE for defining reusable Parts and assembling transformed Instances.
• Added *ELASTIC, TYPE=ENGINEERINGCONSTANTS using E1, E2, E3, ν12, ν13, ν23, G12, G13, G23.
• Adjusted *ELASTIC, TYPE=ORTHOTROPIC from engineering constants to stiffness coefficients D1111, D1122, D2222, D1133, D2233, D3333, D1212, D1313, D2323.
• Adjusted the orthotropic engineering-constant order to E1, E2, E3, ν12, ν13, ν23, G12, G13, G23.
• Adjusted *INSTANCE to use Abaqus-compatible translation and axis-angle rotation syntax.
• Adjusted section definitions so they may appear before their referenced materials and profiles.
• Adjusted *NSET, *ELSET and *SURFACE to support Part-local, Instance-qualified and assembly-level entities.
• Removed the old node, element and surface counting stage and the associated dependence on the highest entity ID.

Keywords [--format abaqus]

• Added support for *PART, *END PART, *ASSEMBLY, *END ASSEMBLY, *INSTANCE and *END INSTANCE.
• Added support for *NODE, *ELEMENT, *NSET, *ELSET and *SURFACE.
• Added support for *MATERIAL, *DENSITY, *ELASTIC, *HYPERELASTIC, *EXPANSION and *ORIENTATION.
• Added support for *SOLID SECTION and *SHELL SECTION.
• Added support for *TRANSFORM and *AMPLITUDE.
• Added support for *CLOAD, *BOUNDARY, *DLOAD and *DSLOAD.
• Added support for linear static, nonlinear static and Riks procedures through *STEP and *STATIC.
• Added support for eigenfrequency extraction through *FREQUENCY.
• Added support for linear buckling through *BUCKLE.
• Added support for direct implicit transient dynamics through *DYNAMIC, DIRECT.
• Added support for direct steady-state harmonic analysis.
• Added *NODE FILE, *EL FILE, *NODE PRINT and *EL PRINT; these are accepted and ignored because FEMaster controls result output itself.
• Adjusted *SOLID SECTION so continuum sections no longer require a data line, while truss sections interpret the supplied value as cross-sectional area.
• Adjusted *BOUNDARY to support constant non-zero prescribed values outside an analysis step.
• Adjusted *STEP handling of NLGEOM to support bare NLGEOM as well as NLGEOM=YES, NLGEOM=NO and NLGEOM=OFF.
• Adjusted section definitions so they may appear before their referenced materials and profiles.

Parts & Instances

• Added reusable Parts containing local nodes, elements, sets, surfaces and section assignments, with sparse local IDs supported.
• Added Instances that reference a Part and apply rigid translations and rotations without duplicating its topology.
• Added a compile stage that expands Parts and Instances into the dense solver model while retaining local-to-global mappings.
• Adjusted models without explicit Parts or Instances to use an implicit default Part and Instance, preserving the previous simple workflow.
• Adjusted internal node and element numbering to be generated during compilation instead of being tied directly to input IDs.
• Adjusted Instance transformations to also transform orientations and coordinate systems associated with the instantiated geometry.

Result Output

• Adjusted .res output from dense solver indices to semantic entity IDs; the default Instance keeps IDs such as 17, while explicit Instances use identifiers such as bolt.17.
• Adjusted .res element IDs consistently across element, element-nodal, integration-point and material-point fields.
• Adjusted .frd node numbering to include the Instance ID, preventing collisions between identical local node IDs in different Instances.
• Adjusted .frd coordinates, element connectivity and nodal result blocks to consistently use the same Instance-aware node mapping.

Internals

• Adjusted parsing to use ordered passes for definitions, topology, compilation and analysis instead of pre-counting model entities.
• Removed obsolete nonlinear solver code and unused legacy paths.
• Improved parser diagnostics, compiler compatibility, error handling and internal documentation.

Individual patches:

• bump version to 2.7.0 (5a27e6f)
• fix compiler warnings (7a2f78a)
• Update instance rotation and FRD node IDs (d56cb6a)
• Rewrite input and result reference documentation (493ab95)
• fixed overflow bug in frd (a716bec)
• support parts in .res and .frd writer (07954ae)
• restore README after accidental placeholder (b28de3e)
• noop (aa2f51e)
• remove accidental placeholder (406c6e3)
• noop (05998d6)
• use same instance syntax as abaqus (22ad5cf)
• rework commenting across files (70bc177)
• rework commenting inside model classes and files (6a5bd0c)
• rework *OVERVIEW (20e4656)
• Minor cleanup (b01f1e3)
• refactor: add parts and instances compile boundary (03d85ec)
• allow sections to be defined before materials and profiles (9d49059)
• improve abaqus reading (f1761ff)
• fix compiler problems (86a46d1)
• Clean up dead nonlinear solver code (#11) (3b564df)
• Feg/abaqus syntax (#12) (13e5776)
• removed expected output behaviour (fab797f)
• update compiled version (24af4ed)
• Document linear harmonic result fields (d174830)
• Fix documented field aliases (e49c998)
• Fix contact manual cross reference (1e391c8)
• Clarify harmonic result frame handling (69213d7)
• Document harmonic and material point result formats (7f5eadb)
• Document surface orientation for mortar contact (cdb7a37)
• Update field domains and NORMAL documentation (333690e)
• Update command reference for recent DSL features (b84d991)
• Document field parsing dependencies (1b345dc)
• Update manual overview for harmonic and contact (5d39a63)
• Wire recent features into user manual (0fdac11)
• Add harmonic and contact manual examples (594a5d9)
• Add dual mortar contact chapter (56ae691)
• Document linear harmonic loadcase (779d0e1)
• Document harmonic analysis controls (ce0d1b3)
• Document shell director fields (ed38c54)
• Add dual-mortar surface-to-surface contact (#10) (05da897)
• Add transactional material point state storage (#8) (663366e)
• Add direct linear harmonic response analysis (#7) (4d96e73)
• fixed crucial field parsing issue (6a1981d)
• Register NORMAL from dedicated command file (487e544)
• Add dedicated NORMAL registration (d7f79e1)
• Separate NORMAL registration from FIELD (210766d)
• Use direct includes and aligned field lookup (f840033)
• Preserve parser option field ordering (83d71e4)
• Align shell normal construction with FEMaster code style (4c7b975)
• Document field parsing stage and parser workflow (9291359)
• Document staged parser workflow in FEMaster style (92d55ae)
• Align field and normal registration with FEMaster style (6dc1be5)
• Fix unrelated coupling DOF line in shell normal update (20ee10e)
• Remove obsolete shell normal apply implementation (3d4c10b)
• Integrate prescribed normals into shell normal construction (293a157)
• Parse fields before building shell normals (7b7bfa5)
• Add field parsing stage before shell normal construction (5721b79)
• Remove separate shell normal apply API (904961c)
• Make *NORMAL select the field directly (14f573a)
• Implement field-based shell normal overrides in Model (9bfa477)
• Add Model API for field-based shell normals (32d9a6c)
• Route NORMAL handling through Model (e7b051a)
• Use fields as shell normal overrides (2424bae)
• Add NORMAL keyword support (ecefa0a)
• minor attempt with contact (0be4901)
• Remove unused model compute wrappers and element no-op overrides (688a595)
• Use full solid integration outside stiffness assembly (3581590)
• refactor code (54ad08a)
• fixed arc length control (8c9551b)
• fix compile issues (1c46d60)
• minor change (97ef9fd)
• better code documentation (3ca8ae5)
• adjust error handling and cutback on invalid jacobians (b5847a9)
• initial version of better contact (572c34c)
• fixed mitc8 tying in curved shells (faf8f06)

Full Changelog: v2.6.0...v2.7.0