OpenSees.exe User Requirements
Implemented Requirements
Element
- Command_Manual
- Tcl Commands
- Modeling_Commands
- model
- uniaxialMaterial
- ndMaterial
- frictionModel
- section
- geometricTransf
- element
- node
- sp commands
- mp commands
- timeSeries
- pattern
- mass
- block commands
- region
- rayleigh
- Analysis Commands
- Output Commands
- Misc Commands
- DataBase Commands
- Zero-Length Elements
- Truss Elements
- Beam-Column Elements
- Elastic Beam Column Element
- Elastic Beam Column Element with Stiffness Modifiers
- Elastic Timoshenko Beam Column Element
- Beam With Hinges Element
- Displacement-Based Beam-Column Element
- Force-Based Beam-Column Element
- Flexure-Shear Interaction Displacement-Based Beam-Column Element
- MVLEM - Multiple-Vertical-Line-Element-Model for RC Walls
- SFI_MVLEM - Cyclic Shear-Flexure Interaction Model for RC Walls
- Joint Elements
- Link Elements
- Bearing Elements
- Elastomeric Bearing (Plasticity) Element
- Elastomeric Bearing (Bouc-Wen) Element
- Flat Slider Bearing Element
- Single Friction Pendulum Bearing Element
- TFP Bearing
- Triple Friction Pendulum Element
- MultipleShearSpring Element
- KikuchiBearing Element
- YamamotoBiaxialHDR Element
- ElastomericX
- LeadRubberX
- HDR
- RJ-Watson EQS Bearing Element
- FPBearingPTV
- Quadrilateral Elements
- Triangular Elements
- Brick Elements
- Tetrahedron Elements
- u-p Elements
- UC San Diego u-p element (saturated soil)
- Twenty Node Brick u-p Element
- Brick Large Displacement u-p Element
- SSPquadUP Element
- SSPbrickUP Element
- Contact Elements
- Cable Elements
Section
- Command_Manual
- Tcl Commands
- Modeling_Commands
- model
- uniaxialMaterial
- ndMaterial
- frictionModel
- section
- geometricTransf
- element
- node
- sp commands
- mp commands
- timeSeries
- pattern
- mass
- block commands
- region
- rayleigh
- Analysis Commands
- Output Commands
- Misc Commands
- DataBase Commands
- Elastic Section
- Fiber Section
- NDFiber Section
- Wide Flange Section
- RC Section
- Parallel Section
- Section Aggregator
- Uniaxial Section
- Elastic Membrane Plate Section
- Plate Fiber Section
- Bidirectional Section
- Isolator2spring Section
uniaxialMaterial
- Command_Manual
- Tcl Commands
- Modeling_Commands
- model
- uniaxialMaterial
- ndMaterial
- frictionModel
- section
- geometricTransf
- element
- node
- sp commands
- mp commands
- timeSeries
- pattern
- mass
- block commands
- region
- rayleigh
- Analysis Commands
- Output Commands
- Misc Commands
- DataBase Commands
- Steel & Reinforcing-Steel Materials
- Steel01 Material
- Steel02 Material -- Giuffré-Menegotto-Pinto Model with Isotropic Strain Hardening
- Steel4 Material
- Hysteretic Material
- Reinforcing Steel Material
- Dodd Restrepo
- RambergOsgoodSteel Material
- SteelMPF - Menegotto and Pinto (1973) Model Extended by Filippou et al. (1983)
- UVCuniaxial (Updated Voce-Chaboche)
- Concrete Materials
- Concrete01 Material -- Zero Tensile Strength
- Concrete02 Material -- Linear Tension Softening
- Concrete04 Material -- Popovics Concrete Material
- Concrete06 Material
- Concrete07 – Chang & Mander’s 1994 Concrete Model
- Concrete01 Material With Stuff in the Cracks
- ConfinedConcrete01 Material
- ConcreteD
- FRPConfinedConcrete
- ConcreteCM - Complete Concrete Model by Chang and Mander (1994)
- Some Standard Uniaxial Materials
- Other Uniaxial Materials
- CastFuse Material
- ViscousDamper Material
- BilinearOilDamper Material
- Modified Ibarra-Medina-Krawinkler Deterioration Model with Bilinear Hysteretic Response (Bilin Material)
- Modified Ibarra-Medina-Krawinkler Deterioration Model with Peak-Oriented Hysteretic Response (ModIMKPeakOriented Material)
- Modified Ibarra-Medina-Krawinkler Deterioration Model with Pinched Hysteretic Response (ModIMKPinching Material)
- SAWS Material
- BARSLIP Material
- Bond_SP01 - - Strain Penetration Model for Fully Anchored Steel Reinforcing Bars
- Fatigue Material
- Hardening Material
- Impact Material
- Hyperbolic Gap Material
- Limit State Material
- MinMax Material
- ElasticBilin Material
- ElasticMultiLinear Material
- MultiLinear Material
- Initial Strain Material
- Initial Stress Material
- PathIndependent Material
- Pinching4 Material
- Engineered Cementitious Composites Material
- SelfCentering Material
- Viscous Material
- BoucWen Material
- BWBN Material (Pinching Hysteretic Bouc-Wen Material)
- PyTzQz uniaxial materials for p-y, t-z and q-z elements for modeling soil-structure interaction through the piles in a structural foundation
- KikuchiAikenHDR Material
- KikuchiAikenLRB Material
- AxialSp Material
- AxialSpHD Material
- Pinching Limit State Material
- CFSWSWP Wood-Sheathed Cold-Formed Steel Shear Wall Panel
- CFSSSWP Steel-Sheathed Cold-formed Steel Shear Wall Panel
nDMaterial
- Command_Manual
- Tcl Commands
- Modeling_Commands
- model
- uniaxialMaterial
- ndMaterial
- frictionModel
- section
- geometricTransf
- element
- node
- sp commands
- mp commands
- timeSeries
- pattern
- mass
- block commands
- region
- rayleigh
- Analysis Commands
- Output Commands
- Misc Commands
- DataBase Commands
- Elastic Isotropic Material
- Elastic Orthotropic Material
- J2 Plasticity Material
- Drucker Prager Material
- Concrete Damage Model
- Plane Stress Material
- Plane Strain Material
- Multi Axial Cyclic Plasticity
- Bounding Surface Cam Clay Material
- Plate Fiber Material
- Plane Stress Concrete Materials
- FSAM - 2D RC Panel Constitutive Behavior
- Tsinghua Sand Models
- Manzari Dafalias Material
- J2CyclicBoundingSurface Material
- PM4Sand Material
- PM4Silt Material (Beta)
- Stress Density Material
- Materials for Modeling Concrete Walls
- Contact Materials for 2D and 3D
- Wrapper material for Initial State Analysis
- UC San Diego soil models (Linear/Nonlinear, dry/drained/undrained soil response under general 2D/3D static/cyclic loading conditions (please visit UCSD for examples)
- UC San Diego Saturated Undrained soil
- Misc.
- Steel & Reinforcing-Steel Materials
Output
Recorder
- Command_Manual
- Tcl Commands
- Modeling_Commands
- model
- uniaxialMaterial
- ndMaterial
- frictionModel
- section
- geometricTransf
- element
- node
- sp commands
- mp commands
- timeSeries
- pattern
- mass
- block commands
- region
- rayleigh
- Analysis Commands
- Output Commands
- Misc Commands
- DataBase Commands
- Node
- Element/Section/Fiber
- Graphics
Basic Visualization
- Display Recorder
- Plot Recorder
- playback Command
Domain Data
- Print Command
- print element data
- print node data
- print all domain-object data
- Print Command
Other
- Input Motion
- Input displacement history in UniformExcitation Pattern Command
- Input acceleration history in MultipleSupport Pattern Command
Under-Development Requirements
Element
- 2D/3D Wall Elements
- 3d nonlinear frame element with full interaction
- axial
- flexure
- torsion
- shear
Section
Material
- Improved concrete materials
- Improved reinforcing-steel materials
Output
Other
To-Be-Developed Requirements
Element
- Buckling-Brace Elements
- Flexible Diaphragm
- 2D & 3D Isolators
- 2d Timoshenko beam element
- 3d frame element with bond-slip of reinforcing steel
- 3d frame element with slip between components, e.g. composite beam, composite column
- 3d concentrated plasticity element with return map algorithm
- 2d SIZE (spreading inelastic zone) beam element
- Nonlinear geometry developments
- Extension of corotational theory to membranes and shells
- Reformulation of 3d frame nonlinear geometry such that any element can take advantage of nonlinear transformation (currently not the case); quaternions vs. rotation nodal variables require either a change in global solution strategy or the mapping back and forth between quaternions and node rotations.
- The following elements include linear or corotational geometry for membranes and shells under large displacements
- 3 to 6 node triangle
- 4 to 9 node quad
- 4 node quad with incompatible modes
- 4 to 9 node RC panel (quad)
- 4 to 9 node Mindlin layer plate/shell
- 4 to 9 node Mindlin RC layer plate/shell
- Discrete Kirchoff triangle plate/shell element
Section
- 2d normal and shear stress interaction
Material
- 3d J2 plasticity with kinematic and isotropic hardening
- 3d plastic-damage concrete constitutive model Lee-Fenves
Output
- Specify recorder to save only every Nth timestep (specifying dT only works for time-history analyses)
- EnvelopeDrift Node recorder
Other
- improved domain-data output
Continual-Development Requirements
Documentation
- Validation with experimental data
- Materials
- Graphical demonstration of input-arguments
- Examples manual
- Practical Examples
- Theoretical Background
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