Community documentation for Grasshopper add-ons & plugins
Karamba3D
ADDON. Version 1.3.2. Released on 2019-Sep-18. Provides 81 components. Created by Clemens Preisinger. Features 4 video tutorials.
Karamba3D is a parametric structural engineering tool which provides accurate analysis of spatial trusses, frames and shells. Karamba3D is fully embedded in the parametric design environment of Grasshopper, a plug-in for the 3d modeling tool Rhinoceros. This makes it easy to combine parameterized geometric models, finite element calculations and optimization algorithms like Galapagos. It lets you analyze the response of 3-dimensional beam and shell structures under arbitrary loads.
8.Utilities
| Element Felting Felts elements of a model. | |
| User Iso-Lines Returns iso-lines at intersection point of given line with shell based on user supplied values. | |
| User Stream-Lines Returns stream lines at intersection point of given line with shell based on user supplied tangent vectors. | |
| Closest Points Connects each node to a given number of nearest neighbor nodes or neighbors within a specified distance. | |
| Closest Points Multi-Dimensional Performs a multidimensional neighborhood search on a set of vectors. | |
| Detect Collision Returns number of collisions between given mesh and model. | |
| Line-Line Intersection Intersects given lines and returns resulting end-points and pieces. | |
| LocalVector Transforms a vector from the global to a local coordinate system given by a plane. | |
| Mesh Breps Meshes multiple Breps. Allows to include manifold edges and points. | |
| Principal States Transformation Transforms given principal vectors of stresses, moments or in-plane forces to an arbitrary direction. | |
| Remove Duplicate Lines Eliminates identical lines from the given set of lines. | |
| Remove Duplicate Points Eliminates identical points from the given set of points. | |
| Simplify Model Simplifies a model by straightening the connecting elements between nodes that connect to more than two neighbor nodes. | |
| Cull Curves Remove curves from the branch of a data tree which are closer than LDist to a curve from another branch. | |
| Get Cells from Lines Get closed cells from a set of lines | |
| Interpolate Shapes Interpolates between a base geometry (0.0) and given shape(s) (1.0). | |
| Mapper Applies mappings (like Simple Stitch) to a model. | |
| Stitches Creates all types of stitches that connect beam sets by a preset number of elements. |
1.Model
| Connectivity to Beam Creates beams with default properties from given connectivity diagram | |
| Disassemble Element Decomposes beams and shells into their components. | |
| Make Element-Set Puts elements designated by their element identifier into a group. | |
| Index to Beam Creates beams with default properties from given node indexes. | |
| Line to Beam Geometry is assumed to be given in [m] | |
| Mesh to Shell Geometry is assumed to be given in [m] | |
| Modify Element Modifies all types of elements or creates element modifiers that do this when the model is assembled. | |
| Orientate Elem Sets the local coordinate system of elements. | |
| Point-Mass Attaches a point mass to a node of given index or position. Does not result in additional weight, only inertia! | |
| Select Element Selects elements according to given criteria and puts all incoming beams in two groups: selected or rejected. | |
| Assemble Model Creates a finite element model from given entities (points, beams, supports, loads, cross sections, materials,... ). | |
| Connected Parts Lists the connected parts of the active line elements of a model. | |
| Disassemble Model Decomposes a model into its components | |
| Element Activation Activates the elements of a model according to the activation list. Uses soft kill approach for inactive elements. | |
| Modify Model Modifies a finite element model according to given entities (points, beams, supports, loads, cross sections, materials,... ). | |
| Support Creates supports at nodes of given node-indexes or node-coordinates. Lets you select translations/rotations which should be zero. |
6.Results
| Beam View Lets you set the display properties of beams and trusses. Plug it into the definition after a ModelView-component so that you can fine-tune the model display with it. | |
| Model View Lets you inspect the current state of the model. Plug it into the data pipeline in front of 'Beam View' or 'Shell View' to control the overall model display. | |
| Shell View Lets you inspect the current state of the shells in a model. Plug it into the definition after a ModelView-component so that you can fine-tune the model display with it. | |
| Principal Strains Approximation Approximates the principal strain directions from the model deformation at arbitrary points. | |
| Beam Displacements Returns displacements along beams: translations/rotations in global x-, y-, and z-direction; rotations about global x-, y- and z-axis. | |
| Beam Forces Retrieves section forces for all beam elements of the model. | |
| Beam Resultant Forces Retrieves maximum resultant section forces for all beam elements of the model. | |
| Deformation-Energy Retrieves deformation energies of the elements of the model. | |
| Nodal Displacements Returns nodal displacements: translations/rotations in global x-, y-, and z-direction; rotations about global x-, y- and z-axis. | |
| Reaction Forces Returns reaction forces and moments at supports. | |
| Shell Forces Retrieves section forces for all shell elements of the model. | |
| Line Results on Shells Returns results as lines painted on the shell mesh. The considered loadcase is that set at the nearest upstream ModelView-component. | |
| Result Vectors on Shells Returns results as vectors. The considered loadcase is that set at the nearest upstream ModelView-component. | |
| Utilization of Elements Returns the utilization of beams or shells for each load case according to Eurocode 3 |
5.Algorithms
| Analyze Calculates the deflections of a given model using first order theory for small deflections. | |
| AnalyzeThII Calculates the deflections of a given model using second order theory for small deflections. | |
| BESO for Beams Bidirectional Evolutionary Structural Optimization for beam structures. | |
| BESO for Shells Bidirectional Evolutionary Structural Optimization for shell structures. | |
| Buckling Modes Calculates the buckling modes of the given model under a specified load case and the buckling load factors. Returns positive buckling load factors only. | |
| Eigen Modes Calculates the eigen modes of the given model according to the special eigenvalue problem. | |
| Large Deformation Analysis Does incremental geometrically non-linear analysis for loads in load case zero. | |
| Natural Vibrations Calculates the natural vibrations of the given model. | |
| Analyze Nonlinear WIP Calculates the nonlinear response of the model. Is work in progress (WIP) | |
| Optimize Cross Section Selects optimum cross sections for beams and shells in the model according to EC3 (EN 1993-1-1) for steel structures. For beams the procedure of annex B is applied. | |
| Optimize Reinforcement Selects optimum reinforcement for shells according to the approach proposed by Marti (see Marti, P | |
| Tension/Compression Eliminator Removes elements under axial tension or compression. By default compression members will be removed. |
3.Cross Section
| Cross Section Creates all types of cross sections. | |
| Disassemble Cross Section Retrieves properties of a cross section. | |
| Eccentricity on Cross Section Sets the eccentricity of a cross section relative to the element axis in local beam coordinates. | |
| Beam-Joints Add hinges at the end-points of beams. | |
| Cross Section Matcher Returns for a cross section the best fitting cross section contained in a given list. The matched cross section is equal or better in all mechanical aspects at minimum weight. | |
| Modify Cross Section Modifies all types of cross sections. | |
| Cross Section Selector Lets you select cross sections by name or regular expression from a list of cross sections. | |
| Cross Section Range Selector Lets you select cross sections by country, shape, family or maximum depth or width. | |
| Read Cross Section Table from File Reads cross section data from a csv-file. | |
| Generate Cross Section Table Converts a list of cross sections into a string which can be streamed as a csv-file and used as a cross section table | |
| Beam-Joint-Agent Sets a hinge at the connection of a beam to another element or node. | |
| Eccentricity on Beam Sets the eccentricity of a cross section relative to the element axis in global coordinates. |
4.Material
| Disassemble Material Retrieves properties of a material. | |
| Read Material Table from File Reads a list of materials from a table given in csv-format. | |
| Material Properties Sets the characteristic parameters of a material. | |
| Material Selection Lets you select a materials by name or regular expression from a list of materials. |
2.Load
| Disassemble Mesh Load Converts mesh-loads to point- and element-loads. | |
| Loads Creates all types of loads for a structural model. | |
| Prescribed Displacement Prescribes displacements at nodes of given node-indexes or node-coordinates |
7.Export
| Export Model to DStV Exports model to DStV file. A DStV-file is a STEP-derivative issued by the 'Deutscher Stahlbau-Verband'. Can be imported by e.g. RStab. |
License
| License Informs you about and lets you manage your current license. Right-click on the icon and you can save your machine-id or load a license via the context menu. |
Site design © Robin Rodricks.
Co-created by Andrew Heumann.
Karamba3D and associated data © 2022 Clemens Preisinger.
Rhinoceros and Grasshopper are registered trademarks of Robert McNeel & Associates.
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