def map_forces(self,
aero_kstep,
structural_kstep,
unsteady_forces_coeff=1.0):
# set all forces to 0
structural_kstep.steady_applied_forces.fill(0.0)
structural_kstep.unsteady_applied_forces.fill(0.0)
# aero forces to structural forces
struct_forces = mapping.aero2struct_force_mapping(
aero_kstep.forces, self.data.aero.struct2aero_mapping,
aero_kstep.zeta, structural_kstep.pos, structural_kstep.psi,
self.data.structure.node_master_elem, self.data.structure.master,
structural_kstep.cag())
dynamic_struct_forces = unsteady_forces_coeff * mapping.aero2struct_force_mapping(
aero_kstep.dynamic_forces, self.data.aero.struct2aero_mapping,
aero_kstep.zeta, structural_kstep.pos, structural_kstep.psi,
self.data.structure.node_master_elem, self.data.structure.master,
structural_kstep.cag())
# prescribed forces + aero forces
structural_kstep.steady_applied_forces = (
(struct_forces +
self.data.structure.ini_info.steady_applied_forces).astype(
dtype=ct.c_double, order='F', copy=True))
structural_kstep.unsteady_applied_forces = ((
dynamic_struct_forces + self.data.structure.dynamic_input[max(
self.data.ts - 1, 0)]['dynamic_forces']).astype(
dtype=ct.c_double, order='F', copy=True))
def map_forces(self,
aero_kstep,
structural_kstep,
unsteady_forces_coeff=1.0):
# set all forces to 0
structural_kstep.steady_applied_forces.fill(0.0)
structural_kstep.unsteady_applied_forces.fill(0.0)
# aero forces to structural forces
struct_forces = mapping.aero2struct_force_mapping(
aero_kstep.forces, self.data.aero.struct2aero_mapping,
aero_kstep.zeta, structural_kstep.pos, structural_kstep.psi,
self.data.structure.node_master_elem,
self.data.structure.connectivities, structural_kstep.cag(),
self.data.aero.aero_dict)
dynamic_struct_forces = unsteady_forces_coeff * mapping.aero2struct_force_mapping(
aero_kstep.dynamic_forces, self.data.aero.struct2aero_mapping,
aero_kstep.zeta, structural_kstep.pos, structural_kstep.psi,
self.data.structure.node_master_elem,
self.data.structure.connectivities, structural_kstep.cag(),
self.data.aero.aero_dict)
if self.correct_forces:
struct_forces = self.correct_forces_function(self.data,
aero_kstep,
structural_kstep,
struct_forces,
rho=self.get_rho())
# dynamic_struct_forces = self.correct_forces_function(self.data,
# aero_kstep,
# structural_kstep,
# dynamic_struct_forces)
# prescribed forces + aero forces
try:
structural_kstep.steady_applied_forces = (
(struct_forces +
self.data.structure.ini_info.steady_applied_forces).astype(
dtype=ct.c_double, order='F', copy=True))
structural_kstep.unsteady_applied_forces = ((
dynamic_struct_forces + self.data.structure.dynamic_input[max(
self.data.ts - 1, 0)]['dynamic_forces']).astype(
dtype=ct.c_double, order='F', copy=True))
except KeyError:
structural_kstep.steady_applied_forces = (
(struct_forces +
self.data.structure.ini_info.steady_applied_forces).astype(
dtype=ct.c_double, order='F', copy=True))
structural_kstep.unsteady_applied_forces = dynamic_struct_forces
def run(self):
cout.cout_wrap('Running static coupled solver...', 1)
for i_step in range(self.settings['n_load_steps'].value):
# load step coefficient
if not self.settings['n_load_steps'].value == 0:
load_step_multiplier = (
i_step + 1.0) / self.settings['n_load_steps'].value
else:
load_step_multiplier = 1.0
# new storage every load step
if i_step > 0:
self.increase_ts()
for i_iter in range(self.settings['max_iter'].value):
cout.cout_wrap('i_step: %u, i_iter: %u' % (i_step, i_iter))
# run aero
self.data = self.aero_solver.run()
print('Beam last node: ')
print(
self.data.structure.timestep_info[self.data.ts].pos[20, :])
# map force
struct_forces = mapping.aero2struct_force_mapping(
self.data.aero.timestep_info[self.data.ts].forces,
self.data.aero.struct2aero_mapping,
self.data.aero.timestep_info[self.data.ts].zeta,
self.data.structure.timestep_info[self.data.ts].pos,
self.data.structure.timestep_info[self.data.ts].psi,
self.data.structure.node_master_elem,
self.data.structure.master,
algebra.quat2rot(self.data.structure.timestep_info[
self.data.ts].quat).T)
if not self.settings['relaxation_factor'].value == 0.:
if i_iter == 0:
self.previous_force = struct_forces.copy()
temp = struct_forces.copy()
struct_forces = (
(1.0 - self.settings['relaxation_factor'].value) *
struct_forces +
self.settings['relaxation_factor'].value *
self.previous_force)
self.previous_force = temp
# copy force in beam
temp1 = load_step_multiplier * struct_forces
self.data.structure.timestep_info[
self.data.ts].steady_applied_forces = temp1.astype(
dtype=ct.c_double, order='F')
# update gravity direction
# TODO
# run beam
self.data = self.structural_solver.run()
# update grid
self.aero_solver.update_step()
# convergence
if self.convergence(i_iter, i_step):
break
# for i_step in range(self.settings['n_load_steps']):
# coeff = ct.c_double((i_step + 1.0)/(self.settings['n_load_steps']))
# for i_iter in range(self.settings['max_iter']):
# cout.cout_wrap('Iter: %u, step: %u' % (i_iter, i_step), 2)
#
# self.aero_solver.initialise(self.data, update_flightcon=False, quiet=True)
# self.data = self.aero_solver.run()
#
# struct_forces = mapping.aero2struct_force_mapping(
# self.data.grid.timestep_info[self.ts].forces,
# self.data.grid.struct2aero_mapping,
# self.data.grid.timestep_info[self.ts].zeta,
# self.data.beam.timestep_info[self.ts].pos_def,
# self.data.beam.timestep_info[self.ts].psi_def,
# self.data.beam.node_master_elem,
# self.data.beam.master,
# self.data.grid.inertial2aero)
#
# if self.relaxation_factor > 0.0:
# struct_forces = ((1.0 - self.relaxation_factor)*struct_forces +
# self.relaxation_factor*self.previous_forces)
#
# self.previous_forces = struct_forces
# self.data.beam.update_forces(struct_forces)
# self.structural_solver.initialise(self.data)
# self.data = self.structural_solver.run(coeff)
#
# if self.convergence(i_iter):
# self.data.flightconditions['FlightCon']['u_inf'] = self.original_u_inf
# self.aero_solver.initialise(self.data, quiet=True)
# self.data = self.aero_solver.run()
# if i_step == self.settings['n_load_steps'] - 1:
# cout.cout_wrap('Converged in %u iterations' % (i_iter + 1), 2)
# break
cout.cout_wrap('...Finished', 1)
return self.data
def run(self):
for i_step in range(self.settings['n_load_steps'].value + 1):
if (i_step == self.settings['n_load_steps'].value
and self.settings['n_load_steps'].value > 0):
break
# load step coefficient
if not self.settings['n_load_steps'].value == 0:
load_step_multiplier = (
i_step + 1.0) / self.settings['n_load_steps'].value
else:
load_step_multiplier = 1.0
# new storage every load step
if i_step > 0:
self.increase_ts()
for i_iter in range(self.settings['max_iter'].value):
# run aero
self.data = self.aero_solver.run()
# map force
struct_forces = mapping.aero2struct_force_mapping(
self.data.aero.timestep_info[self.data.ts].forces,
self.data.aero.struct2aero_mapping,
self.data.aero.timestep_info[self.data.ts].zeta,
self.data.structure.timestep_info[self.data.ts].pos,
self.data.structure.timestep_info[self.data.ts].psi,
self.data.structure.node_master_elem,
self.data.structure.connectivities,
self.data.structure.timestep_info[self.data.ts].cag(),
self.data.aero.aero_dict)
if not self.settings['relaxation_factor'].value == 0.:
if i_iter == 0:
self.previous_force = struct_forces.copy()
temp = struct_forces.copy()
struct_forces = (
(1.0 - self.settings['relaxation_factor'].value) *
struct_forces +
self.settings['relaxation_factor'].value *
self.previous_force)
self.previous_force = temp
# copy force in beam
old_g = self.structural_solver.settings['gravity'].value
self.structural_solver.settings[
'gravity'] = old_g * load_step_multiplier
temp1 = load_step_multiplier * (
struct_forces +
self.data.structure.ini_info.steady_applied_forces)
self.data.structure.timestep_info[
self.data.ts].steady_applied_forces[:] = temp1
# run beam
self.data = self.structural_solver.run()
self.structural_solver.settings['gravity'] = ct.c_double(old_g)
(self.data.structure.timestep_info[
self.data.ts].total_forces[0:3],
self.data.structure.timestep_info[self.data.ts].
total_forces[3:6]) = (self.extract_resultants(
self.data.structure.timestep_info[self.data.ts]))
# update grid
self.aero_solver.update_step()
# convergence
if self.convergence(i_iter, i_step):
# create q and dqdt vectors
self.structural_solver.update(
self.data.structure.timestep_info[self.data.ts])
self.cleanup_timestep_info()
break
return self.data
def run(self):
# Include the rbm
# print("ts", self.data.ts)
self.data.structure.timestep_info[
-1].for_vel = self.data.structure.dynamic_input[0]['for_vel']
for i_step in range(self.settings['n_load_steps'].value + 1):
if (i_step == self.settings['n_load_steps'].value
and self.settings['n_load_steps'].value > 0):
break
# load step coefficient
if not self.settings['n_load_steps'].value == 0:
load_step_multiplier = (
i_step + 1.0) / self.settings['n_load_steps'].value
else:
load_step_multiplier = 1.0
# new storage every load step
if i_step > 0:
self.increase_ts()
for i_iter in range(self.settings['max_iter'].value):
if self.settings['print_info'].value:
cout.cout_wrap('i_step: %u, i_iter: %u' % (i_step, i_iter))
# run aero
self.data = self.aero_solver.run()
# map force
struct_forces = mapping.aero2struct_force_mapping(
self.data.aero.timestep_info[self.data.ts].forces,
self.data.aero.struct2aero_mapping,
self.data.aero.timestep_info[self.data.ts].zeta,
self.data.structure.timestep_info[self.data.ts].pos,
self.data.structure.timestep_info[self.data.ts].psi,
self.data.structure.node_master_elem,
self.data.structure.connectivities,
self.data.structure.timestep_info[self.data.ts].cag())
if not self.settings['relaxation_factor'].value == 0.:
if i_iter == 0:
self.previous_force = struct_forces.copy()
temp = struct_forces.copy()
struct_forces = (
(1.0 - self.settings['relaxation_factor'].value) *
struct_forces +
self.settings['relaxation_factor'].value *
self.previous_force)
self.previous_force = temp
# copy force in beam
with_gravity_setting = True
try:
old_g = self.structural_solver.settings['gravity'].value
self.structural_solver.settings[
'gravity'] = old_g * load_step_multiplier
except KeyError:
with_gravity_setting = False
temp1 = load_step_multiplier * (
struct_forces +
self.data.structure.ini_info.steady_applied_forces)
self.data.structure.timestep_info[
self.data.ts].steady_applied_forces[:] = temp1
# run beam
prev_quat = self.data.structure.timestep_info[
self.data.ts].quat.copy()
self.data = self.structural_solver.run()
# The following line removes the rbm
self.data.structure.timestep_info[
self.data.ts].quat = prev_quat.copy()
if with_gravity_setting:
self.structural_solver.settings['gravity'] = ct.c_double(
old_g)
# update grid
self.aero_solver.update_step()
# print("psi[-1]", self.data.structure.timestep_info[-1].psi[-1,1,:])
# convergence
if self.convergence(i_iter):
# create q and dqdt vectors
self.structural_solver.update(
self.data.structure.timestep_info[self.data.ts])
self.data = self.aero_solver.run()
self.cleanup_timestep_info()
break
if self.settings['print_info']:
resultants = self.extract_resultants()
cout.cout_wrap('Resultant forces and moments: ' + str(resultants))
return self.data