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# Amira Abdel-Rahman
# (c) Massachusetts Institute of Technology 2020
######################### 1. Voxel Design ###########################
setup = Dict()
### 1.b Draw Lattice
rhino=true
name="auxetic_v"
voxelSize=75
latticeSizeX=1
latticeSizeY=1
latticeSizeZ=1
gridSize=10
setup["gridSize"]=gridSize
setup["rhino"]=rhino
setup["rhinoFileName"]="./julia/examples/CAD_Rhino/trial.3dm";
setup["layerIndex"]="12";
setup["useVoxelList"]=false
setup["latticeSizeX"]=latticeSizeX
setup["latticeSizeY"]=latticeSizeY
setup["latticeSizeZ"]=latticeSizeZ
######################### 2. Boundary Conditions #########################
######################### 2.a. Global Settings #########################
#scaling params
setup["voxelSize"]=voxelSize; #voxel size
setup["scale"]=0.5; #scale for visualization
setup["hierarchical"]=false; #hierachical simualtion
#simulation params
setup["numTimeSteps"]=20000; #num of saved timesteps for simulation
setup["poisson"]=false; # account for poisson ration (only for hierarchical)
setup["linear"]=true; # linear vs non-linear
setup["thermal"]=false; #if there is change in temperature
setup["globalDamping"]=0.05; # (usually from 0.1 to 0.4)
#visualization params
setup["maxNumFiles"]=100; #num of saved timesteps for visualization, make sure it's bigger than numTimeSteps
######################### 2.b. Materials #########################
#default material
material1= Dict()
material1["area"]=2.38*2.38
material1["density"]=0.028
material1["stiffness"]=2000.0
material1["poissonRatio"]=0.0
material1["cTE"]=0.0 #coefficient of thermal expansion
#large bounding box for default material
boundingBoxMaterial1=Dict()
boundingBoxMaterial1["min"]=Dict()
boundingBoxMaterial1["max"]=Dict()
boundingBoxMaterial1["min"]["x"]=-voxelSize*gridSize;
boundingBoxMaterial1["min"]["y"]=-voxelSize*gridSize;
boundingBoxMaterial1["min"]["z"]=-voxelSize*gridSize;
boundingBoxMaterial1["max"]["x"]= voxelSize*gridSize;
boundingBoxMaterial1["max"]["y"]= voxelSize*gridSize;
boundingBoxMaterial1["max"]["z"]= voxelSize*gridSize;
setup["materials"]=[
[boundingBoxMaterial1,material1]
];
######################### 2.c. Supports #########################
#x,y,z,rx,ry,rz (default is pinned joing i.e [false,false,false,true,true,true])
dof=[true,true,true,true,true,true]
boundingBoxSupport1=Dict()
boundingBoxSupport1["min"]=Dict()
boundingBoxSupport1["max"]=Dict()
boundingBoxSupport1["min"]["x"]=-voxelSize/2.0;
boundingBoxSupport1["min"]["y"]=-voxelSize/2.0;
boundingBoxSupport1["min"]["z"]=-voxelSize/2.0;
boundingBoxSupport1["max"]["x"]= voxelSize*(latticeSizeX)+voxelSize/2.0;
boundingBoxSupport1["max"]["y"]= voxelSize/8;
boundingBoxSupport1["max"]["z"]= voxelSize*(latticeSizeZ*5)+voxelSize/2.0;
setup["supports"]=[
[boundingBoxSupport1,dof]
];
######################### 2.d. Loads #########################
#### 2.d.1 Static Loads
load1=Dict()
load1["x"]=0.0
load1["y"]=-10
load1["z"]=0.0
boundingBoxLoad1=Dict()
boundingBoxLoad1["min"]=Dict()
boundingBoxLoad1["max"]=Dict()
boundingBoxLoad1["min"]["x"]=-voxelSize/2.0;
boundingBoxLoad1["min"]["y"]=voxelSize*(latticeSizeY)-voxelSize/8;
boundingBoxLoad1["min"]["z"]=-voxelSize/2.0;
boundingBoxLoad1["max"]["x"]=voxelSize*(latticeSizeX)+voxelSize/2.0;
boundingBoxLoad1["max"]["y"]=voxelSize*(latticeSizeY)+voxelSize/2.0;
boundingBoxLoad1["max"]["z"]=voxelSize*(latticeSizeZ*5)+voxelSize/2.0;
setup["loads"]=[
[boundingBoxLoad1,load1]
];
#### 2.d.2 Fixed Displacements
dis1=Dict()
dis1["x"]=0.0
dis1["y"]=-5e-3
dis1["z"]=0.0
boundingBoxDis1=Dict()
boundingBoxDis1["min"]=Dict()
boundingBoxDis1["max"]=Dict()
boundingBoxDis1["min"]["x"]=-voxelSize/2.0;
boundingBoxDis1["min"]["y"]=voxelSize*(latticeSizeY)-voxelSize/8;
boundingBoxDis1["min"]["z"]=-voxelSize/2.0;
boundingBoxDis1["max"]["x"]=voxelSize*(latticeSizeX)+voxelSize/2.0;
boundingBoxDis1["max"]["y"]=voxelSize*(latticeSizeY)+voxelSize/2.0;
boundingBoxDis1["max"]["z"]=voxelSize*(latticeSizeZ*5)+voxelSize/2.0;
setup["fixedDisplacements"]=[
# [boundingBoxDis1,dis1]
];
#### 2.d.3 Dynamic Loads
function floorEnabled()
return false
end
function gravityEnabled()
return false
end
function externalDisplacement(currentTimeStep,N_position,N_fixedDisplacement)
if currentTimeStep<10000
return N_fixedDisplacement
else
return Vector3(0,0,0)
end
end
function externalForce(currentTimeStep,N_position,N_force)
return N_force
end
function updateTemperature(currentRestLength,currentTimeStep,mat)
# @cuprintln("currentRestLength $currentRestLength")
return currentRestLength
end
###########################################################################