def ops_cyclic():
ops.remove('recorders')
ops.wipeAnalysis()
ops.loadConst('-time', 0.0)
# set hysteresis
ops.recorder('Node', '-file', f'output\\cyclic_81_disp_{argv[0]}.out',
'-time', '-node', 81, '-dof', 1, 'disp')
ops.recorder('Node', '-file', f'output\\cyclic_81_rea_{argv[0]}.out',
'-time', '-nodeRange', 1, 8, '-dof', 1, 'reaction')
# ops.timeSeries("Path", 2, '-dt', 0.1, '-filePath', 'disp.txt')
ops.timeSeries('Linear', 2)
ops.pattern('Plain', 2, 2)
# ops.sp(81, 1, 1)
ops.load(81, 1, 0, 0, 0, 0, 0)
# ops.constraints('Penalty', 1e20, 1e20)
# ops.numberer('RCM')
# ops.system('BandGeneral')
# ops.test('NormDispIncr', 1e-4, 1e6, 2)
# ops.algorithm('KrylovNewton')
# ops.integrator('LoadControl', 0.1)
# ops.analysis('Static')
# # ops.analyze(12961)
# with open('disp.txt', 'r') as f:
# i = 1
# lines = f.readlines()
# count = len(lines)
# for line in lines:
# logger.info(
# 'position = {} line = {} and {:3%}'.format(line[:-1], i, i/count))
# ops.analyze(1)
# i = i + 1
CyclicDisplace(1e-3, 80, 1e-3, 81, 1, 1e-6, 1e6)
def ops_cyclic():
ops.remove('recorders')
ops.wipeAnalysis()
ops.loadConst('-time', 0.0)
# set hysteresis
ops.recorder('Node', '-file', 'output\\cyclic_657.out',
'-time', '-node', 651, '-dof', 1, 'disp')
ops.pattern('Plain', 2, 1)
ops.load(651, 1, 0, 0, 0, 0, 0)
CyclicDisplace(1e-3, 80, 1e-3, 651, 1, 1, 1e6)
def analisis_opensees(path, permutaciones): #helper, #win
ops.wipe()
# bucle para generar los x análisis
for i in range(len(permutaciones)):
perfil = str(permutaciones[i][0])
nf = permutaciones[i][2]
amort = permutaciones[i][3]
den = permutaciones[i][4]
vel = permutaciones[i][5]
capas = len(permutaciones[i][6])
nstep = permutaciones[i][30]
dt = float(permutaciones[i][31])
# creación de elementos
sElemX = permutaciones[i][1] # elementos en X
sElemZ = permutaciones[i][46] # espesor en Z
# =============================================================================
# ######## geometría de la columna ######
# =============================================================================
# límite entre capas
limite_capa = []
anterior = 0
for j in range(capas):
espesor = permutaciones[i][8][j]
limite_capa.append(espesor + anterior)
anterior = limite_capa[j]
print('Límite de capa: ' + str(limite_capa[j]))
# creación de elementos y nodos en x
nElemX = 1 # elementos en x
nNodeX = 2 * nElemX + 1 # nodos en x
# creación de elementos y nodos para z
nElemZ = 1
# creación de elementos y nodos en Y y totales
nElemY = [] # elementos en y
sElemY = [] # dimension en y
nElemT = 0
for j in range(capas):
espesor = permutaciones[i][8][j]
nElemY.append(2 * espesor)
nElemT += nElemY[j]
print('Elementos en capa ' + str(j + 1) + ': ' + str(nElemY[j]))
sElemY.append(permutaciones[i][8][j] / nElemY[j])
print('Tamaño de los elementos en capa ' + str(j + 1) + ': ' +
str(sElemY[j]) + '\n')
# number of nodes in vertical direction in each layer
nNodeY = [] # dimension en y
nNodeT = 0
s = 0
for j in range(capas - 1):
nNodeY.append(4 * nElemY[j])
nNodeT += nNodeY[j]
s += 1
print('Nodos en capa ' + str(j + 1) + ': ' + str(nNodeY[j]))
nNodeY.append(4 * (nElemY[-1] + 1))
nNodeT += nNodeY[-1]
print('Nodos en capa ' + str(s + 1) + ': ' + str(nNodeY[s]))
print('Nodos totales: ' + str(nNodeT))
#win.ui.progressBar.setValue(15)
# =============================================================================
# ######### Crear nodos del suelo ##########
# =============================================================================
# creación de nodos de presión de poros
ops.model('basic', '-ndm', 3, '-ndf', 4)
with open(path + '/Post-proceso/' + perfil + '/ppNodesInfo.dat',
'w') as f:
count = 0.0
yCoord = 0.0
nodos = []
dryNode = []
altura_nf = 10 - nf
for k in range(capas):
for j in range(0, int(nNodeY[k]), 4):
ops.node(j + count + 1, 0.0, yCoord, 0.0)
ops.node(j + count + 2, 0.0, yCoord, sElemZ)
ops.node(j + count + 3, sElemX, yCoord, sElemZ)
ops.node(j + count + 4, sElemX, yCoord, 0.0)
f.write(
str(int(j + count + 1)) + '\t' + str(0.0) + '\t' +
str(yCoord) + '\t' + str(0.0) + '\n')
f.write(
str(int(j + count + 2)) + '\t' + str(0.0) + '\t' +
str(yCoord) + '\t' + str(sElemZ) + '\n')
f.write(
str(int(j + count + 3)) + '\t' + str(sElemX) + '\t' +
str(yCoord) + '\t' + str(sElemZ) + '\n')
f.write(
str(int(j + count + 4)) + '\t' + str(sElemX) + '\t' +
str(yCoord) + '\t' + str(0.0) + '\n')
nodos.append(str(j + count + 1))
nodos.append(str(j + count + 2))
nodos.append(str(j + count + 3))
nodos.append(str(j + count + 4))
#designate node sobre la superficie de agua
if yCoord >= altura_nf:
dryNode.append(j + count + 1)
dryNode.append(j + count + 2)
dryNode.append(j + count + 3)
dryNode.append(j + count + 4)
yCoord = (yCoord + sElemY[k])
count = (count + nNodeY[k])
print("Finished creating all soil nodes...")
# =============================================================================
# ####### Condiciones de contorno en la base de la columna #########
# =============================================================================
ops.fix(1, *[0, 1, 1, 0])
ops.fix(2, *[0, 1, 1, 0])
ops.fix(3, *[0, 1, 1, 0])
ops.fix(4, *[0, 1, 1, 0])
ops.equalDOF(1, 2, 1)
ops.equalDOF(1, 3, 1)
ops.equalDOF(1, 4, 1)
print('Fin de creación de nodos de la base de la columna\n\n')
# =============================================================================
# ####### Condiciones de contorno en los nudos restantes #########
# =============================================================================
count = 0
for k in range(5, int(nNodeT + 1), 4):
ops.equalDOF(k, k + 1, *[1, 2, 3])
ops.equalDOF(k, k + 2, *[1, 2, 3])
ops.equalDOF(k, k + 3, *[1, 2, 3])
print('Fin de creación equalDOF para nodos de presión de poros\n\n')
for j in range(len(dryNode)):
ops.fix(dryNode[j], *[0, 0, 0, 1])
print("Finished creating all soil boundary conditions...")
# =============================================================================
# ####### crear elemento y material de suelo #########
# =============================================================================
cargas = []
for j in range(capas):
pendiente = permutaciones[i][9][j]
slope = math.atan(pendiente / 100)
tipo_suelo = permutaciones[i][6][j]
rho = permutaciones[i][10][j]
Gr = permutaciones[i][12][j]
Br = permutaciones[i][13][j]
fric = permutaciones[i][15][j]
refpress = permutaciones[i][18][j]
gmax = permutaciones[i][19][j]
presscoef = permutaciones[i][20][j]
surf = permutaciones[i][21][j]
ev = permutaciones[i][22][j]
cc1 = permutaciones[i][23][j]
cc3 = permutaciones[i][24][j]
cd1 = permutaciones[i][25][j]
cd3 = permutaciones[i][26][j]
ptang = permutaciones[i][27][j]
coh = permutaciones[i][28][j]
if tipo_suelo == 'No cohesivo':
if float(surf) > 0:
ops.nDMaterial('PressureDependMultiYield02', j + 1, 3.0,
rho, Gr, Br, fric, gmax, refpress,
presscoef, ptang, cc1, cc3, cd1, cd3,
float(surf), 5.0, 3.0, *[1.0, 0.0], ev,
*[0.9, 0.02, 0.7, 101.0])
else:
ops.nDMaterial('PressureDependMultiYield02', j + 1, 3.0,
rho, Gr, Br, fric, gmax, refpress,
presscoef, ptang, cc1, cc3, cd1, cd3,
float(surf), *permutaciones[i][29][j], 5.0,
3.0, *[1.0,
0.0], ev, *[0.9, 0.02, 0.7, 101.0])
cargas.append(
[0.0, -9.81 * math.cos(slope), -9.81 * math.sin(slope)])
print('Fin de la creación de material de suelo\n\n')
#-----------------------------------------------------------------------------------------
# 5. CREATE SOIL ELEMENTS
#-----------------------------------------------------------------------------------------
count = 0
alpha = 1.5e-6
with open(path + '/Post-proceso/' + perfil + '/ppElemInfo.dat',
'w') as f:
# crear elemento de suelo
for k in range(capas):
for j in range(int(nElemY[k])):
nI = 4 * (j + count + 1) - 3
nJ = nI + 1
nK = nI + 2
nL = nI + 3
nM = nI + 4
nN = nI + 5
nO = nI + 6
nP = nI + 7
f.write(
str(j + count + 1) + '\t' + str(nI) + '\t' + str(nJ) +
'\t' + str(nK) + '\t' + str(nL) + '\t' + str(nM) +
'\t' + str(nN) + '\t' + str(nO) + '\t' + str(nP) +
'\n')
Bc = permutaciones[i][14][k]
ev = permutaciones[i][22][k]
ops.element('SSPbrickUP', (j + count + 1),
*[nI, nJ, nK, nL, nM, nN, nO,
nP], (k + 1), float(Bc), 1.0, 1.0, 1.0, 1.0,
float(ev), alpha, cargas[k][0], cargas[k][1],
cargas[k][2])
count = (count + int(nElemY[k]))
print('Fin de la creación del elemento del suelo\n\n')
#win.ui.progressBar.setValue(25)
# =============================================================================
# ######### Amortiguamiento de Lysmer ##########
# =============================================================================
ops.model('basic', '-ndm', 3, '-ndf', 3)
# definir nodos y coordenadas del amortiguamiento
dashF = nNodeT + 1
dashX = nNodeT + 2
dashZ = nNodeT + 3
ops.node(dashF, 0.0, 0.0, 0.0)
ops.node(dashX, 0.0, 0.0, 0.0)
ops.node(dashZ, 0.0, 0.0, 0.0)
# definir restricciones para los nodos de amortiguamiento
ops.fix(dashF, 1, 1, 1)
ops.fix(dashX, 0, 1, 1)
ops.fix(dashZ, 1, 1, 0)
# definir equalDOF para el amortiguamiento en la base del suelo
ops.equalDOF(1, dashX, 1)
ops.equalDOF(1, dashZ, 3)
print(
'Fin de la creación de condiciones de contorno de los nodos de amortiguamiento\n\n'
)
# definir el material de amortiguamiento
colArea = sElemX * sElemZ
dashpotCoeff = vel * den * colArea
ops.uniaxialMaterial('Viscous', capas + 1, dashpotCoeff, 1.0)
# definir el elemento
ops.element('zeroLength', nElemT + 1, *[dashF, dashX], '-mat',
capas + 1, '-dir', *[1])
ops.element('zeroLength', nElemT + 2, *[dashF, dashZ], '-mat',
capas + 1, '-dir', *[3])
print('Fin de la creación del elemento de amortiguamiento\n\n')
#-----------------------------------------------------------------------------------------
# 9. DEFINE ANALYSIS PARAMETERS
#-----------------------------------------------------------------------------------------
# amortiguamiento de Rayleigh
# frecuencia menor
omega1 = 2 * math.pi * 0.2
# frecuencia mayor
omega2 = 2 * math.pi * 20
a0 = 2.0 * (amort / 100) * omega1 * omega2 / (omega1 + omega2)
a1 = 2.0 * (amort / 100) / (omega1 + omega2)
print('Coeficientes de amortiguamiento' + '\n' + 'a0: ' +
format(a0, '.6f') + '\n' + 'a1: ' + format(a1, '.6f') + '\n\n')
#win.ui.progressBar.setValue(35)
# =============================================================================
# ######## Determinación de análisis estático #########
# =============================================================================
#---DETERMINE STABLE ANALYSIS TIME STEP USING CFL CONDITION
# se determina a partir de un análisis transitorio de largo tiempo
duration = nstep * dt
# tamaño mínimo del elemento y velocidad máxima
minSize = sElemY[0]
vsMax = permutaciones[i][11][0]
for j in range(1, capas):
if sElemY[j] < minSize:
minSize = sElemY[j]
if permutaciones[i][11][j] > vsMax:
vsMax = permutaciones[i][11][j]
# trial analysis time step
kTrial = minSize / (vsMax**0.5)
# tiempo de análisis y pasos de tiempo
if dt <= kTrial:
nStep = nstep
dT = dt
else:
nStep = int(math.floor(duration / kTrial) + 1)
dT = duration / nStep
print('Número de pasos en el análisis: ' + str(nStep) + '\n')
print('Incremento de tiempo: ' + str(dT) + '\n\n')
#----------------------------------------------------------------------------------------
# 7. GRAVITY ANALYSIS
#-----------------------------------------------------------------------------------------
ops.model('basic', '-ndm', 3, '-ndf', 4)
ops.updateMaterialStage('-material', int(k + 1), '-stage', 0)
# algoritmo de análisis estático
ops.constraints(permutaciones[i][32][0],
float(permutaciones[i][32][1]),
float(permutaciones[i][32][2]))
ops.test(permutaciones[i][34][0], float(permutaciones[i][34][1]),
int(permutaciones[i][34][2]), int(permutaciones[i][34][3]))
ops.algorithm(permutaciones[i][38][0])
ops.numberer(permutaciones[i][33][0])
ops.system(permutaciones[i][36][0])
ops.integrator(permutaciones[i][35][0], float(permutaciones[i][35][1]),
float(permutaciones[i][35][2]))
ops.analysis(permutaciones[i][37][0])
print('Inicio de análisis estático elástico\n\n')
ops.start()
ops.analyze(20, 5.0e2)
print('Fin de análisis estático elástico\n\n')
#win.ui.progressBar.setValue(40)
# update materials to consider plastic behavior
# =============================================================================
ops.updateMaterialStage('-material', int(k + 1), '-stage', 1)
# =============================================================================
# plastic gravity loading
print('Inicio de análisis estático plástico\n\n')
ok = ops.analyze(40, 5.0e-2)
if ok != 0:
error = 'Error de convergencia en análisis estático de modelo' + str(
perfil) + '\n\n'
print(error)
break
print('Fin de análisis estático plástico\n\n')
#-----------------------------------------------------------------------------------------
# 11. UPDATE ELEMENT PERMEABILITY VALUES FOR POST-GRAVITY ANALYSIS
#-----------------------------------------------------------------------------------------
ini = 1
aum = 0
sum = 0
for j in range(capas):
#Layer 3
ops.setParameter(
'-val', permutaciones[i][16][j],
['-eleRange',
int(ini + aum),
int(nElemY[j] + sum)], 'xPerm')
ops.setParameter(
'-val', permutaciones[i][17][j],
['-eleRange',
int(ini + aum),
int(nElemY[j] + sum)], 'yPerm')
ops.setParameter(
'-val', permutaciones[i][16][j],
['-eleRange',
int(ini + aum),
int(nElemY[j] + sum)], 'zPerm')
ini = nElemY[j] + sum
sum += nElemY[j]
aum = 1
print("Finished updating permeabilities for dynamic analysis...")
# =============================================================================
# ########### Grabadores dinámicos ##########
# =============================================================================
ops.setTime(0.0)
ops.wipeAnalysis()
ops.remove('recorders')
# tiempo de la grabadora
recDT = 10 * dt
path_acel = path + '/Post-proceso/' + perfil + '/dinamico/aceleraciones/'
ops.recorder('Node', '-file', path_acel + 'accelerationx.out', '-time',
'-dT', recDT, '-node', *nodos, '-dof', 1, 'accel')
print('Fin de creación de grabadores\n\n')
#win.ui.progressBar.setValue(50)
# =============================================================================
# ######### Determinación de análisis dinámico ##########
# =============================================================================
# objeto de serie temporal para el historial de fuerza
path_vel = path + '/Pre-proceso/' + perfil + '/TREASISL2.txt'
ops.timeSeries('Path', 1, '-dt', dt, '-filePath', path_vel, '-factor',
dashpotCoeff)
ops.pattern('Plain', 10, 1)
ops.load(1, *[1.0, 0.0, 0.0, 0.0]) #CAMBIO REALIZADO OJO
print('Fin de creación de carga dinámica\n\n')
# algoritmo de análisis dinámico
ops.constraints(permutaciones[i][39][0],
float(permutaciones[i][39][1]),
float(permutaciones[i][39][2]))
ops.test(permutaciones[i][41][0], float(permutaciones[i][41][1]),
int(permutaciones[i][41][2]), int(permutaciones[i][41][3]))
ops.algorithm(permutaciones[i][45][0])
ops.numberer(permutaciones[i][40][0])
ops.system(permutaciones[i][43][0])
ops.integrator(permutaciones[i][42][0], float(permutaciones[i][42][1]),
float(permutaciones[i][42][2]))
ops.analysis(permutaciones[i][44][0])
# =============================================================================
# ops.rayleigh(a0, a1, 0.0, 0.0)
# =============================================================================
print('Inicio de análisis dinámico\n\n')
#win.ui.progressBar.setValue(85)
ok = ops.analyze(nStep, dT)
if ok != 0:
error = 'Error de convergencia en análisis dinámico de modelo' + str(
permutaciones[i][0]) + '\n\n'
print(error)
curTime = ops.getTime()
mTime = curTime
print('cursTime:' + str(curTime))
curStep = (curTime / dT)
print('cursStep:' + str(curStep))
rStep = (nStep - curStep) * 2.0
remStep = int(nStep - curStep) * 2.0
print('remSTep:' + str(curStep))
dT = (dT / 2)
print('dT:' + str(dT))
ops.analyze(remStep, dT)
if ok != 0:
error = 'Error de convergencia en análisis dinámico de modelo' + str(
permutaciones[i][0]) + '\n\n'
print(error)
curTime = ops.getTime()
print('cursTime:' + str(curTime))
curStep = (curTime - mTime) / dT
print('cursStep:' + str(curStep))
remStep = int(rStep - curStep) * 2
print('remSTep:' + str(curStep))
dT = (dT / 2)
print('dT:' + str(dT))
ops.analyze(remStep, dT)
print('Fin de análisis dinámico\n\n')
ops.wipe()
logger.info("load node = %d and load = [%f, %f, %f, %f, %f, %f]",
i * 1000 + 8, *load)
# opsplt.createODB("ShearWall", 'LoadCaseName')
# load analyze
ops.constraints('Plain')
ops.numberer('Plain')
ops.system('BandGen')
ops.test('NormDispIncr', 1.0e-6, 200)
ops.algorithm('Newton')
ops.integrator('LoadControl', 0.01)
ops.analysis('Static')
ok = ops.analyze(100)
logger.info("gravity analyze result is %s", ok == 0)
ops.remove('recorders')
ops.wipeAnalysis()
ops.loadConst('-time', 0.0)
# set hysteresis
ops.recorder('Node', '-file', 'output\\node1008.out', '-time', '-node', 1008,
'-dof', 1, 'disp')
ops.pattern('Plain', 2, 1)
ops.load(1008, 1, 0, 0, 0, 0, 0)
lib.CyclicDisplace(1e-3, 80, 5e-4, 1008, 1, 1, 1e5)
# disp = lib.full(0, 5, 1e-2)
# ops.system("SparseGeneral", "-piv") # Overkill, but may need the pivoting!
# ops.test("NormUnbalance", 1.0e-2, 100000, 0)
# ops.numberer("Plain")
ops.numberer("RCM")
ops.constraints("Plain")
ops.system("SparseGeneral", "-piv")
ops.analysis("Static")
ops.analyze(5)
# ---------------------------------------
# Create and Perform the dynamic analysis
# ---------------------------------------
# Remove the static analysis & reset the time to 0.0
ops.wipeAnalysis()
ops.setTime(0.0)
# Now remove the loads and let the beam vibrate
ops.remove("loadPattern", 1)
ModelName = '3D_Shell'
LoadCaseName = 'Transient'
opp.createODB(ModelName, LoadCaseName, Nmodes=3)
LoadCaseName2 = 'Transient_2ms'
opp.createODB(ModelName, LoadCaseName2, deltaT=1 / 24, Nmodes=3)
# Create the transient analysis
ops.test("EnergyIncr", 1.0E-10, 20, 0)
ops.algorithm("Newton")
ops.numberer("RCM")
ops.constraints("Plain")
ops.system("SparseGeneral", "-piv")
ops.integrator("Newmark", 0.50, 0.25)
def test_DynAnal_BeamWithQuadElements():
ops.wipe() # clear opensees model
# create data directory
# file mkdir Data
#-----------------------------
# Define the model
# ----------------------------
# Create ModelBuilder with 2 dimensions and 2 DOF/node
ops.model('BasicBuilder', '-ndm', 2, '-ndf', 2)
# create the material
ops.nDMaterial('ElasticIsotropic', 1, 1000.0, 0.25, 3.0)
# set type of quadrilateral element (uncomment one of the three options)
Quad = 'quad'
#set Quad bbarQuad
#set Quad enhancedQuad
# set up the arguments for the three considered elements
if Quad == "enhancedQuad":
eleArgs = "PlaneStress2D 1"
if Quad == "quad":
eleArgs = "1 PlaneStress2D 1"
if Quad == "bbarQuad":
eleArgs = "1"
# set up the number of elements in x (nx) and y (ny) direction
nx = 16 # NOTE: nx MUST BE EVEN FOR THIS EXAMPLE
ny = 4
# define numbering of node at the left support (bn), and the two nodes at load application (l1, l2)
bn = nx + 1
l1 = int(nx / 2 + 1)
l2 = int(l1 + ny * (nx + 1))
# create the nodes and elements using the block2D command
ops.block2D(nx, ny, 1, 1, Quad, 1., 'PlaneStress2D', 1, 1, 0., 0., 2, 40.,
0., 3, 40., 10., 4, 0., 10.)
# define boundary conditions
ops.fix(1, 1, 1)
ops.fix(bn, 0, 1)
# define the recorder
#---------------------
# recorder Node -file Data/Node.out -time -node l1 -dof 2 disp
# define load pattern
#---------------------
ops.timeSeries('Linear', 1)
ops.pattern('Plain', 1, 1)
ops.load(l1, 0.0, -1.0)
ops.load(l2, 0.0, -1.0)
# --------------------------------------------------------------------
# Start of static analysis (creation of the analysis & analysis itself)
# --------------------------------------------------------------------
# Load control with variable load steps
# init Jd min max
ops.integrator('LoadControl', 1.0, 1, 1.0, 10.0)
# Convergence test
# tolerance maxIter displayCode
ops.test('EnergyIncr', 1.0e-12, 10, 0)
# Solution algorithm
ops.algorithm('Newton')
# DOF numberer
ops.numberer('RCM')
# Cosntraint handler
ops.constraints('Plain')
# System of equations solver
ops.system('ProfileSPD')
# Type of analysis analysis
ops.analysis('Static')
# Perform the analysis
ops.analyze(10)
# --------------------------
# End of static analysis
# --------------------------
# -------------------------------------
# create display for transient analysis
#--------------------------------------
# windowTitle xLoc yLoc xPixels yPixels
# recorder display "Simply Supported Beam" 10 10 800 200 -wipe
# prp 20 5.0 1.0 # projection reference point (prp) defines the center of projection (viewer eye)
# vup 0 1 0 # view-up vector (vup)
# vpn 0 0 1 # view-plane normal (vpn)
# viewWindow -30 30 -10 10 # coordiantes of the window relative to prp
# display 10 0 5
# the 1st arg. is the tag for display mode
# the 2nd arg. is magnification factor for nodes, the 3rd arg. is magnif. factor of deformed shape
# ---------------------------------------
# Create and Perform the dynamic analysis
# ---------------------------------------
#define damping
evals = ops.eigen(1)
ops.rayleigh(0., 0., 0., 2 * 0.02 / sqrt(evals[0]))
# Remove the static analysis & reset the time to 0.0
ops.wipeAnalysis()
ops.setTime(0.0)
# Now remove the loads and let the beam vibrate
ops.remove('loadPattern', 1)
uy1 = ops.nodeDisp(9, 2)
print("uy(9) = ", uy1)
# Create the transient analysis
ops.test('EnergyIncr', 1.0e-12, 10, 0)
ops.algorithm('Newton')
ops.numberer('RCM')
ops.constraints('Plain')
ops.integrator('Newmark', 0.5, 0.25)
ops.system('BandGeneral')
ops.analysis('Transient')
# Perform the transient analysis (50 sec)
ops.analyze(1500, 0.5)
uy2 = ops.nodeDisp(9, 2)
print("uy(9) = ", uy2)
assert abs(uy1 + 0.39426414168933876514) < 1e-12 and abs(
uy2 + 0.00736847273806807632) < 1e-12
print("========================================")
def RunAnalysis():
# ----------------------------
# Start of model generation
# ----------------------------
# remove existing model
ops.wipe()
ops.model("BasicBuilder", "-ndm", 3, "-ndf", 6)
# set default units
ops.defaultUnits("-force", "kip", "-length", "in", "-time", "sec", "-temp",
"F")
# Define the section
# ------------------
# secTag E nu h rho
ops.section("ElasticMembranePlateSection", 1, 3.0E3, 0.25, 1.175, 1.27)
# Define geometry
# ---------------
# these should both be even
nx = 10
ny = 2
# loaded nodes
mid = int(((nx + 1) * (ny + 1) + 1) / 2)
side1 = int((nx + 2) / 2)
side2 = int((nx + 1) * (ny + 1) - side1 + 1)
# generate the nodes and elements
# numX numY startNode startEle eleType eleArgs? coords?
ops.block2D(nx, ny, 1, 1, "ShellMITC4", 1, 1, -20.0, 0.0, 0.0, 2, -20.0,
0.0, 40.0, 3, 20.0, 0.0, 40.0, 4, 20.0, 0.0, 0.0, 5, -10.0,
10.0, 20.0, 7, 10.0, 10.0, 20.0, 9, 0.0, 10.0, 20.0)
# define the boundary conditions
ops.fixZ(0.0, 1, 1, 1, 0, 1, 1)
ops.fixZ(40.0, 1, 1, 1, 0, 1, 1)
ops.mass(20, 10.0, 10.0, 10.0, 0.0, 0.0, 0.0)
# create a Linear time series
ops.timeSeries("Linear", 1)
# add some loads
ops.pattern("Plain", 1, 1, "-fact", 1.0)
ops.load(mid, 0.0, -0.50, 0.0, 0.0, 0.0, 0.0)
ops.load(side1, 0.0, -0.25, 0.0, 0.0, 0.0, 0.0)
ops.load(side2, 0.0, -0.25, 0.0, 0.0, 0.0, 0.0)
# ------------------------
# Start of static analysis
# ------------------------
# Load control with variable load steps
# init Jd min max
ops.integrator("LoadControl", 1.0, 1, 1.0, 10.0)
ops.test("EnergyIncr", 1.0E-10, 20, 0)
ops.algorithm("Newton")
ops.numberer("RCM")
ops.constraints("Plain")
ops.system("SparseGeneral", "-piv")
ops.analysis("Static")
ops.analyze(5)
# ---------------------------------------
# Create and Perform the dynamic analysis
# ---------------------------------------
# Remove the static analysis & reset the time to 0.0
ops.wipeAnalysis()
ops.setTime(0.0)
# Now remove the loads and let the beam vibrate
ops.remove("loadPattern", 1)
Model = 'test'
LoadCase = 'Transient'
LoadCase2 = 'Transient_5s'
opp.createODB(Model, LoadCase, Nmodes=3, recorders=[])
opp.createODB(Model, LoadCase2, Nmodes=3, deltaT=5., recorders=[])
# Create the transient analysis
ops.test("EnergyIncr", 1.0E-10, 20, 0)
ops.algorithm("Newton")
ops.numberer("RCM")
ops.constraints("Plain")
ops.system("SparseGeneral", "-piv")
ops.integrator("Newmark", 0.50, 0.25)
ops.analysis("Transient")
# Perform the transient analysis (20 sec)
ops.analyze(100, 0.2)
