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Complete Update regarding the new Input Config

The Configuration File contains all information necessary for the algorithm to run through the optimisation. It is subdivided into different areas regarding the Geometry, Loads and Constraints, Cases (Events) and optimisation parameter. The file is written in JSON file format.

Based on the geometry data and the Configuration File, the algorithm can run fully autonomous and generate the result files in one subfolder each time it is started in the main folder.

The configuration file starts with the creation timestamp and also indicates the used unit system.

applicationRequest

OptimizationLoop

Indicates that the regular optimisation loop is executed

automaticFunctionalFacesDetection.positiveNonDesignDirection

true

Functional Surfaces are automatically detected. These areas grow during an optimisation to guarantee sharp edges and functional surfaces after the intersection.

If all functional surfaces have a Machining Allowance applied to them, this option should be deactivated.

Loads and Constraints

The Loads and Constraints section collects all information regarding the loads and fixations applied to the different geometries.

boundaryCondition.<name>.geometryName

Name of a geometry entry to associate with.

boundaryCondition.<name>.coordinateSystem

Name of a coordinate system described in the same file, used for describing constraints in local coordinates.

boundaryCondition.<name>.load.x

boundaryCondition.<name>.load.y

boundaryCondition.<name>.load.z

x-direction of load

y-direction of load

z-direction of load

boundaryCondition.<name>.displacement.x

boundaryCondition.<name>.displacement.y

boundaryCondition.<name>.displacement.z

x-direction of displacement

y-direction of displacement

z-direction of displacement

boundaryCondition.<name>.moment.x

boundaryCondition.<name>.moment.y

boundaryCondition.<name>.moment.z

x-direction of moment

y-direction of moment

z-direction of moment

boundaryCondition.<name>.acceleration.x

boundaryCondition.<name>.acceleration.y

boundaryCondition.<name>.acceleration.z

x-direction of acceleration

y-direction of acceleration

z-direction of acceleration

boundaryCondition.<name>.pointOfApplication.x

boundaryCondition.<name>.pointOfApplication.y

boundaryCondition.<name>.pointOfApplication.z

x-direction of point of application

y-direction of point of application

z-direction of point of application

boundaryCondition.<name>.pointOfApplication.coordinateSystem

Coordinate system related to the point of application

boundaryCondition.<name>.pressure

value of the pressure force

Example

"boundaryCondition": {
".index": 7,
"ModelConstraintEvent_Constraint_1": {
".index": 4,
"displacement": {
".index": 0,
"x": "0",
"y": "0",
"z": "0"
},
"geometryName": "ModelConstraintEvent_Constraint_1"
},
"ModelLoadEvent_Force_-Moment_1_Force": {
".index": 0,
"coordinateSystem": "CoordSystem_Coordinate_System_1",
"geometryName": "ModelLoadEvent_Force-_Moment_1",
"load": {
".index": 0,
"z": "35598"
},
"pointOfApplication": {
".index": 1,
"x": "-0.0740283",
"y": "-0.0128969",
"z": "0.071124"

Configuration

configuration.symmetry.x

configuration.symmetry.y

configuration.symmetry.z

x-axis as symmetry plane (Y-Z-Plane).

y-axis as symmetry plane (X-Z-Plane).

z-axis as symmetry plane (X-Y-Plane).

configuration.symmetry.coordinateSystem

If the symmetry is to refer to a local coordinate system, the following command must also be entered (Coordinate_system_1 is the name of the local coordinate system and can vary).

configuration.maxConcurrentGPUSolvers

Maximum number of GPUs used by the optimisation (support GPUs: Nvidia Quadro Graphics Cards supported by CUDA Driver)

configuration.buildSpace

Geometry used for the intersection with the Design Space to receive the nominal geometry

configuration.offsetSpace

Geometry used for the intersection with the Design Space to receive the print geometry

configuration.unitSystem

Used unit system

configuration.eigenThreads

Number of CPU threads that can be used to build the matrix. At least two cores should always remain free. We recommend using 2-6 threads.

configuration.complexity

Defines how complex the design is getting. More information here.

configuration.solver.<name>.strategy

InternalCPU: CPU based solver

ExternLegacy: External (GPU) solver

configuration.solver.<name>.host

IP of the external solver, localhost for the same workstation. IP for cloud, for what the matrix is built locally and sent to the calculation unit. Large amounts of data can be moved with a corresponding amount of time.

configuration.solver.<name>.port

Port which is used to access the CudaSolver. This can be selected arbitrarily, according to the specified value when starting the solver. (The default port for the Cuda service is 42001)

Example

"configuration": {
".index": 9,
"buildSpace": "DesignSpace_machiningCut",
"complexity": "14",
"eigenThreads": "4",
"offsetSpace": "DesignSpace_machiningOffset",
"remesher": {
".index": 1,
"designCandidateRemesher": {
".index": 0,
"enabled": "true"
},
"voxelIntersectionRemesher": {
".index": 1,
"enabled": "true"
}
},
"solver": {
".index": 0,
"solver1": {
".index": 0,
"host": "localhost",
"port": "42004",
"strategy": "ExternLegacy"
}
},
"unitSystem": "SI_K"

Coordinate System

coordinateSystem.<name>.alpha

coordinateSystem.<name>.beta

coordinateSystem.<name>.gamma

The coordinate system is located/orientated with coordinate values and Euler angles regarding the global coordinate system.

coordinateSystem.<name>.origin.x

coordinateSystem.<name>.origin.y

coordinateSystem.<name>.origin.z

The coordinate system has a point of origin.

coordinateSystem.<name>.base

Each coordinate system is given a unique name Coordinate_System_1

Example

"coordinateSystem": {
".index": 6,
"CoordSystem_CSYS.0": {
".index": 0,
"alpha": "0",
"beta": "0",
"gamma": "0",
"origin": {
".index": 0,
"x": "0",
"y": "0",
"z": "0"

Design

design.<name>.geometryName

Definition of the Design Space.

design.<name>.materialName

Definition of material for the Design Space.

Example

"design": {
".index": 3,
"DesignSpace_machiningCut": {
".index": 0,
"geometryName": "DesignSpace_machiningCut",
"materialName": "TiAl6V4"

Engine Version

"engine_version": "2021.2",

Event

event.<name>.eventName

Specified name of the event.

event.<name>.safetyFactor

Event specific Safety Factor

Example

"event": {
".index": 8,
"Event_1": {
".index": 0,
"condition": {
".index": 0,
"ModelConstraintEvent_Constraint_1": {
".index": 1
},
"ModelLoadEvent_Force_-_Moment_1_Force": {
".index": 0
}
},
"safetyFactor": "2"

Failure Criterion

Von Mises

failureCriterion.<name>.failureCriterion

Specified name of the Failure Criterion.

failureCriterion.<name>.tensileStrength

Tensile Strength of the material

Example von Mises

"failureCriterion": {
".index": 1,
"Von_Mises": {
".index": 0,
"failureCriterion": "VonMises",
"tensileStrength": "6e+08"

Tsai Hill Failure Criterion

failureCriterion.<name>.failureCriterion

Specified name of the Failure Criterion.

failureCriterion.<name>.x_t

Axial Tensile Strength

failureCriterion.<name>.y_t

Transversal Tensile Strength

failureCriterion.<name>.x_c

Axial Compression Strength (3D Orthotropic Material)

failureCriterion.<name>.y_c

Transversal Compression Strength (3D Orthotropic Material)

failureCriterion.<name>.s

Shear Strength

Example Tsai Hill

Tsai Wu Failure Criterion

failureCriterion.<name>.failureCriterion

Specified name of the Failure Criterion.

failureCriterion.<name>.x_t

Tensile Strength x

failureCriterion.<name>.y_t

Tensile Strength y

failureCriterion.<name>.z_t

Tensile Strength z (3D Orthotropic Material)

failureCriterion.<name>.x_c

Compression Strength x

failureCriterion.<name>.y_c

Compression Strength y

failureCriterion.<name>.z_c

Compression Strength z (3D Orthotropic Material)

failureCriterion.<name>.s_xy

Shear Strength in XY

failureCriterion.<name>.s_yz

Shear Strength in YZ (3D Orthotropic Material)

failureCriterion.<name>.s_zx

Shear Strength in ZX (3D Orthotropic Material)

Example Tsai Wu

Geometry

In the Geometry section, all geometries and their paths are defined. For each geometry used in the optimisation an STL-file needs to be available in the optimisation folder.

geometry.<name>.isOpenSurface

geometry.<name>.useSurfaceOnly

geometry.<name>.useSurfaceCentroid

Indicates that the geometry is a surface and not a volume.

geometry.<name>.path

Path to the geometry file

Example

"geometry": {
".index": 2,
"DesignSpace_machiningCut": {
".index": 0,
"path": "DesignSpace_machiningCut.stl"

Machining Allowance

The Machining Allowances section collects all information regarding the Machining Allowances and the Design Space including the Machining Allowances to guarantee a correct intersection.

machiningOffset.<name>.geometryName

Specified name of the Machining Allowance reference geometry.

machiningOffset.<name>.offset

Defines the thickness of the Machining Allowance in the chosen unit.

Example

"machiningOffset": {
".index": 5,
"machOffset_MachiningAllowance_Machining_Allowance_1": {
".index": 0,
"geometryName": "MachiningAllowance_Machining_Allowance_1",
"offset": "0.001"

In the Geometry section, all geometries and their paths are defined. For each geometry used in the optimisation an STL-file needs to be saved in the optimisation folder.

Material

material.<name>.failureCriterionName

Name of the Failure Criterion

material.<name>.density

Material density

material.<name>.coordinateSystem

Coordinate system related to the material

Isotropic Material

material.<name>.elementMode

Specified material name

material.<name>.young

Young’s modulus

material.<name>.poisson

Poisson ratio

Example Isotropic Material

"material": {
".index": 0,
"TiAl6V4": {
".index": 0,
"density": "4481.87",
"elementMode": "Isotropic",
"failureCriterionName": "Von_Mises",
"material": "",
"poisson": "0.26",
"young": "1.15617e+11"

3D Transversely Isotropic Material

material.<name>.elementMode

Specified material name

material.<name>.exx

material.<name>.eyy

Axial Young’s Modulus x

Transversal Young’s modulus yz

material.<name>.gxy

Shear modulus of parallel planes.

material.<name>.vxy

material.<name>.vyz

Axial Poisson ratio

Transversal Poisson ratio

Example 3D Transversely Isotropic Material

"material": {
".index": 0,
"TiAl6V4": {
".index": 0,
"density": "4481.87",
"elementMode": "Isotropic",
"failureCriterionName": "Von_Mises",
"material": "",
"poisson": "0.26",
"young": "1.15617e+11"

3D Orthotropic Material

material.<name>.elementMode

Specified material name

material.<name>.exx

material.<name>.eyy

material.<name>.ezz

Young’s modulus x

Young’s modulus y

Young’s modulus z

material.<name>.gxy

material.<name>.gxz

material.<name>.gyz

Shear modulus of xy plane

Shear modulus of xz plane

Shear modulus of yz plane

material.<name>.vxy

material.<name>.vyx

material.<name>.vxz

material.<name>.vzx

material.<name>.vyz

material.<name>.vzy

xy component of Poisson ratio tensor

yx component of Poisson ratio tensor

xz component of Poisson ratio tensor

zx component of Poisson ratio tensor

yz component of Poisson ratio tensor

zy component of Poisson ratio tensor

Example 3D Orthotropic Material

"material": {
".index": 0,
"TiAl6V4": {
".index": 0,
"density": "4481.87",
"elementMode": "Isotropic",
"failureCriterionName": "Von_Mises",
"material": "",
"poisson": "0.26",
"young": "1.15617e+11"

Non-Design Spaces

nonDesign.<name>.geometryName

Specified geometry name

nonDesign.<name>.preserveGeometry

The volume cannot be removed during the optimisation and will keep a connection to the rest of the design.

nonDesign.<name>.retainedVolume

A Retained Volumes specifies an area of the optimisation model which is included in the analysis but not in the design.

Example

"nonDesign": {
".index": 4,
"MachiningAllowance_Machining_Allowance_1": {
".index": 11,
"geometryName": "MachiningAllowance_Machining_Allowance_1"

Schedule

Example

"schedule": {
".index": 10,
"prefabricated": {
".index": 0,
"shapeQuality": "balanced",
"strutDensity": "medium"

Advanced User Settings

Have a look here for more information and commands that can be used.

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