Simples Documentation Version 2.5.4

• 1. Introduction
• 2. Simples Class Reference
  • 2.1. Model
    • 2.1.1. Model Class
      • Model
    • 2.1.2. Element Parameters
      • Epar
      • Epars
  • 2.2. FE Mesh Classes
    • 2.2.1. Branch
      • Branch
    • 2.2.2. Node Class
      • Node
    • 2.2.3. Element Class
      • Element
    • 2.2.4. Node and Element Sets
    • 2.2.5. Node Set
      • NodeSet
    • 2.2.6. Element Set
      • ElementSet
    • 2.2.7. Element Edge Set
      • ElementEdgeSet
    • 2.2.8. Element Face Set
      • ElementFaceSet
  • 2.3. Essential Boundary Conditions
    • EbcSet
      • EbcSet.model
      • EbcSet.get_branch()
      • EbcSet.branch
      • EbcSet.domain
      • EbcSet.eid
      • EbcSet.orientation
      • EbcSet.title
      • EbcSet.load()
      • EbcSet.save()
      • EbcSet.to_mdl()
  • 2.4. Natural Boundary Conditions
    • 2.4.1. Acceleration (Inertia) Forces
      • NbcAccelerations
    • 2.4.2. Body Heat
      • NbcBodyHeat
    • 2.4.3. Body Forces
      • NbcBodyLoads
    • 2.4.4. Concentrated Force Components on Nodes
      • NbcConcentratedLoads
    • 2.4.5. DOF Values on Nodes
      • NbcDofValues
    • 2.4.6. Forces on Nodes
      • NbcForces
    • 2.4.7. Line Forces on Element Edges
      • NbcLineLoads
    • 2.4.8. Normal Pressures on Element Faces
      • NbcPressure
    • 2.4.9. Surface Traction Forces on Element Faces
      • NbcSurfaceTractions
  • 2.5. Solution Cases and Stages
    • 2.5.1. Case Class
      • Case
  • 2.6. Fields Classes
    • 2.6.1. NodeField Class
      • NodeField
    • 2.6.2. ElementField Class
      • ElementField
    • 2.6.3. SamplingPointField Class
      • SamplingPointField
    • 2.6.4. BeamStressField Class
      • BeamStressField
  • 2.7. Materials
    • MaterialSolid
      • MaterialSolid.show()
      • MaterialSolid.tomdl()
      • MaterialSolid.Failure
      • MaterialSolid.failure_criterion
      • MaterialSolid.format()
      • MaterialSolid.get_parameters()
      • MaterialSolid.get_properties()
      • MaterialSolid.get_property()
      • MaterialSolid.ident
      • MaterialSolid.modified
      • MaterialSolid.mtype
      • MaterialSolid.set_properties()
      • MaterialSolid.stype
      • MaterialSolid.title
    • MaterialLaminate
      • MaterialLaminate.nlayers
      • MaterialLaminate.get_layer_angle()
      • MaterialLaminate.angles
      • MaterialLaminate.get_layer_ident()
      • MaterialLaminate.idents
      • MaterialLaminate.get_layer_ply_group()
      • MaterialLaminate.get_layer_thickness()
      • MaterialLaminate.thicknesses
      • MaterialLaminate.thickness
      • MaterialLaminate.format()
      • MaterialLaminate.show()
      • MaterialLaminate.Failure
      • MaterialLaminate.failure_criterion
      • MaterialLaminate.get_parameters()
      • MaterialLaminate.get_properties()
      • MaterialLaminate.get_property()
      • MaterialLaminate.ident
      • MaterialLaminate.modified
      • MaterialLaminate.mtype
      • MaterialLaminate.set_properties()
      • MaterialLaminate.stype
      • MaterialLaminate.title
    • FailureVonMises
      • FailureVonMises.get_R()
      • FailureVonMises.R
      • FailureVonMises.get_findex()
      • FailureVonMises.get_sigmav()
      • FailureVonMises.Material
      • FailureVonMises.fcriterion
      • FailureVonMises.get_material()
      • FailureVonMises.modified
      • FailureVonMises.ncomp
  • 2.8. Properties
    • Property
      • Property.get_property()
      • Property.get_properties()
      • Property.get_parameters()
      • Property.set_properties()
      • Property.ptype
      • Property.ident
      • Property.modified
      • Property.format()
      • Property.get_bcs()
      • Property.has_bcs()
      • Property.Material
      • Property.tomdl()
  • 2.9. Data Formatters
    • FormatSummary
      • FormatSummary.extract()
    • FormatNodeElementSet
    • FormatMeshConnectivity
    • FormatEpatch
    • FormatNodeParameters
    • FormatElementParameters
    • FormatFIELDS
    • FormatMatProp
    • FormatBoundaryConditions
    • FormatCaseStage
    • FormatRTable
    • FormatBucklingLoads
    • FormatBucklingLoad
    • FormatEigenfrequencies
    • FormatTransformations
    • FormatArray
    • FormatElements
      • FormatElements.extract()
    • FormatNodes
      • FormatNodes.extract()
    • FormatDofField
      • FormatDofField.extract()
      • FormatDofField.extract_and_format()
    • FormatSamplingPointField
      • FormatSamplingPointField.extract()
      • FormatSamplingPointField.extract_and_format()
  • 2.10. Beam Cross-Sections
    • Point
      • Point.yz
      • Point.t
    • BeamCrossSection
      • BeamCrossSection.compute_properties()
    • BeamCrossSectionBox
      • BeamCrossSectionBox.compute_properties()
    • BeamCrossSectionL
      • BeamCrossSectionL.compute_properties()
    • BeamCrossSectionT2
      • BeamCrossSectionT2.compute_properties()
    • BeamCrossSectionTube
      • BeamCrossSectionTube.compute_properties()
    • BeamCrossSectionBar
      • BeamCrossSectionBar.compute_properties()
    • BeamCrossSectionRod
      • BeamCrossSectionRod.compute_properties()
    • BeamCrossSectionI
      • BeamCrossSectionI.compute_properties()
    • BeamCrossSectionC
      • BeamCrossSectionC.compute_properties()
    • BeamCrossSectionConstants
      • BeamCrossSectionConstants.compute_properties()
    • BeamCrossSectionSectionproperties
  • 2.11. Graphs
    • Graph2
      • Graph2.get_plt
      • Graph2.get_figure
      • Graph2.get_axes
      • Graph2.axes_minmax_x
      • Graph2.axes_minmax_y
      • Graph2.axes_label_x
      • Graph2.axes_labelsize_x
      • Graph2.axes_ticksize_x
      • Graph2.axes_tickformat_x
      • Graph2.axes_label_y
      • Graph2.axes_labelsize_y
      • Graph2.axes_ticksize_y
      • Graph2.axes_tickformat_y
      • Graph2.grid_linewidth_x
      • Graph2.grid_linewidth_y
      • Graph2.grid_framelinewidth
      • Graph2.grid
      • Graph2.title
      • Graph2.title_fontsize
      • Graph2.legend_visible
      • Graph2.legend_fontsize
      • Graph2.close()
      • Graph2.get_size()
      • Graph2.add_line()
      • Graph2.add_line_xy()
      • Graph2.add_line_arr()
      • Graph2.add_legend()
      • Graph2.save()
      • Graph2.show()
      • Graph2.swap()
    • Line2
  • 2.12. Modal Transient Solver
    • ModalSolver
      • ModalSolver.show()
      • ModalSolver.integrate()
      • ModalSolver.back_transform_dof_time_history()
      • ModalSolver.back_transform_step_db()
  • 2.13. Utility Classes and Functions
    • 2.13.1. Version
      • get_version()
      • get_version_long()
    • 2.13.2. Curve Interpolation
      • BezierCurve
      • BSplinePCurve
    • 2.13.3. Mesh Extract Utilities
      • ExtractMesh
      • print_set()
    • 2.13.4. Compare and Check Functions
    • 2.13.5. Unit Conversions
    • 2.13.6. Misc
    • 2.13.7. Transformations
  • 2.14. Helper Classes and Functions
    • 2.14.1. Named Tuple Helper Classes
      • ArrayN2
      • BeamElementStresses
      • BucklingLoad
      • Eigenfrequencies
      • FromCSV
      • MeshElementConnectivity
      • MeshPointSet
      • StepInfo
  • 2.15. B2000++ FE Input Generator
  • 2.16. Modeler Classes
    • 2.16.1. Points
      • CPoint
    • 2.16.2. Edges
      • EdgeBSpline
      • EdgeCircularArc
      • EdgeStraightLine
    • 2.16.3. Surfaces
      • SurfaceCoons
• 3. Simples Applications
  • 3.1. Python 3 Simples Interpreter
  • 3.2. b2dofinit
  • 3.3. b2modal
  • 3.4. b2plot_csv
  • 3.5. b2plot_stack
  • 3.6. b2print_buckling_loads
  • 3.7. b2print_dataset
  • 3.8. b2print_eigenfrequencies
  • 3.9. b2print_elements
  • 3.10. b2print_mesh
  • 3.11. b2print_nodes
  • 3.12. b2print_solutions
  • 3.13. b2print_stack
  • 3.14. b2print_steps
• 4. Using Simples Classes
  • 4.1. The Model
  • 4.2. Solution Cases
  • 4.3. Boundary Conditions
  • 4.4. Solution Fields
    • 4.4.1. Node or DOF Fields
    • 4.4.2. Element Fields
    • 4.4.3. Sampling Point Fields
      • SamplingPointField
    • 4.4.4. Beam Stress Fields
      • BeamStressField
  • 4.5. Formatting Data
  • 4.6. Beam Cross Sections
  • 4.7. Create Graphs
  • 4.8. The FE Modeler
  • 4.9. Utilities
    • 4.9.1. The Modal Solver
    • 4.9.2. Interpolation of Curves
  • 4.10. Data Extraction Utilities
  • 4.11. Modeler
• 5. Additional Notes
• 6. Verification and Examples
  • 6.1. B2000++ Tests
    • 6.1.1. NBC Generation
    • 6.1.2. Section Stress Test
    • 6.1.3. Section Properties Calculation Tests
  • 6.2. Interpolation Tests
    • 6.2.1. Spline Interpolation tests
  • 6.3. Utilities Tests
    • 6.3.1. Compare Curve Test
    • 6.3.2. Compare Floats Test
  • 6.4. Minimodeler Examples
    • 6.4.1. Cook Membrane Problem (Modeler)
    • 6.4.2. Axially Compressed Cylinder
    • 6.4.3. Beam with pin-joint
    • 6.4.4. Plate under normal pressure
    • 6.4.5. Tensile Strip with Hole
• 7. Bibliograpy
• 8. Updates
  • 8.1. Version 2.5.4 (February 2026)
    • 8.1.1. Modules
    • 8.1.2. Applications
  • 8.2. Version 2.5.3 (January 2026)
    • 8.2.1. Modules
    • 8.2.2. Documentation
  • 8.3. Version 2.5.2 (December 2025)
    • 8.3.1. Applications
    • 8.3.2. Modules
    • 8.3.3. Tests and Examples
    • 8.3.4. Documentation
  • 8.4. Version 2.5.1 (November 2025)
    • 8.4.1. Applications
    • 8.4.2. Modules
  • 8.5. Version 2.5.0 (September 2025)
    • 8.5.1. Applications
    • 8.5.2. Modules
    • 8.5.3. Tests
    • 8.5.4. Examples
  • 8.6. Version 2.4.5 (June 2025)
    • 8.6.1. Applications
    • 8.6.2. Build
    • 8.6.3. Modules
  • 8.7. Version 2.4.4 (May 2025)
    • 8.7.1. Modules
• Index

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