Transient Simulation with Animation#

In this script transient simulation is processed to extract results like stress, strain, displacement. Extracting data for chosen time steps and animating is also displayed.

Perform required imports#

Perform required imports. # This example uses a supplied file that you can get by importing the DPF examples package.

from ansys.dpf import post
from ansys.dpf.post import examples

Get Simulation object#

Get the Simulation object that allows access to the result. The Simulation object must be instantiated with the path for the result file. For example, "C:/Users/user/my_result.rst" on Windows or "/home/user/my_result.rst" on Linux.

example_path = examples.find_msup_transient()
# to automatically detect the simulation type, use:
simulation = post.load_simulation(example_path)

# to enable auto-completion, use the equivalent:
simulation = post.TransientMechanicalSimulation(example_path)

# print the simulation to get an overview of what's available
print(simulation)
Transient Mechanical Simulation.


Data Sources
------------------------------
/opt/hostedtoolcache/Python/3.10.14/x64/lib/python3.10/site-packages/ansys/dpf/core/examples/result_files/msup_transient_plate1.rst

DPF Model
------------------------------
Transient analysis
Unit system: MKS: m, kg, N, s, V, A, degC
Physics Type: Mechanical
Available results:
     -  displacement: Nodal Displacement
     -  velocity: Nodal Velocity
     -  acceleration: Nodal Acceleration
     -  reaction_force: Nodal Force
     -  stress: ElementalNodal Stress
     -  elemental_volume: Elemental Volume
     -  stiffness_matrix_energy: Elemental Energy-stiffness matrix
     -  artificial_hourglass_energy: Elemental Hourglass Energy
     -  thermal_dissipation_energy: Elemental thermal dissipation energy
     -  kinetic_energy: Elemental Kinetic Energy
     -  co_energy: Elemental co-energy
     -  incremental_energy: Elemental incremental energy
     -  elastic_strain: ElementalNodal Strain
------------------------------
DPF  Meshed Region:
  393 nodes
  40 elements
  Unit: m
  With solid (3D) elements
------------------------------
DPF  Time/Freq Support:
  Number of sets: 20
Cumulative     Time (s)       LoadStep       Substep
1              0.010000       1              1
2              0.020000       1              2
3              0.030000       1              3
4              0.040000       1              4
5              0.050000       1              5
6              0.060000       1              6
7              0.070000       1              7
8              0.080000       1              8
9              0.090000       1              9
10             0.100000       1              10
11             0.110000       1              11
12             0.120000       1              12
13             0.130000       1              13
14             0.140000       1              14
15             0.150000       1              15
16             0.160000       1              16
17             0.170000       1              17
18             0.180000       1              18
19             0.190000       1              19
20             0.200000       1              20

Extract displacement at all times or on a selection#

# query the displacement vectorial field for all times
displacement = simulation.displacement(all_sets=True)
print(displacement)
# animation shows the norm of vectorial fields with several components
displacement.animate(deform=True, title="U")


# get specific components with "components"
x_displacement = simulation.displacement(all_sets=True, components=["X"])
print(x_displacement)
x_displacement.animate(deform=True, title="UX")


# get the norm of a vectorial result with "norm=True"
displacement_norm = simulation.displacement(all_sets=True, norm=True)
print(displacement_norm)
displacement_norm.animate(deform=True, title="U norm")

# get the available time set ids in the simulation
print(simulation.set_ids)

# extract displacement on given time steps or select the times steps from the already evaluated
# displacement DataFrame
displacement = simulation.displacement(set_ids=simulation.set_ids[5:])
displacement = displacement.select(set_ids=simulation.set_ids[5:])
print(displacement)
  • 03 transient simulation
  • 03 transient simulation
  • 03 transient simulation
             results      U (m)                                                             ...
             set_ids          1           2           3           4           5           6 ...
 node_ids components                                                                        ...
        9          X 1.6236e-14  8.6224e-14  2.1451e-13  3.6103e-13  4.9262e-13  5.7822e-13 ...
                   Y 1.4763e-04  5.8099e-04  1.2121e-03  1.9949e-03  2.7524e-03  3.1675e-03 ...
                   Z 1.9644e-06  9.6317e-06  2.2793e-05  3.8222e-05  5.2323e-05  6.1003e-05 ...
       96          X 2.6765e-08 -4.9606e-08 -3.7405e-07 -6.8920e-07 -8.8899e-07 -1.1142e-06 ...
                   Y 1.4776e-04  5.8073e-04  1.2102e-03  1.9914e-03  2.7480e-03  3.1619e-03 ...
                   Z 1.9663e-06  9.6467e-06  2.2825e-05  3.8272e-05  5.2398e-05  6.1085e-05 ...
      ...        ...        ...         ...         ...         ...         ...         ... ...


  results     U_X (m)                                                             ...
  set_ids           1           2           3           4           5           6 ...
 node_ids                                                                         ...
        9  1.6236e-14  8.6224e-14  2.1451e-13  3.6103e-13  4.9262e-13  5.7822e-13 ...
       96  2.6765e-08 -4.9606e-08 -3.7405e-07 -6.8920e-07 -8.8899e-07 -1.1142e-06 ...
       95  2.9067e-08 -2.1748e-08 -3.0981e-07 -5.8388e-07 -7.3503e-07 -9.4097e-07 ...
       10  1.9354e-14  1.0285e-13  2.5600e-13  4.3087e-13  5.8790e-13  6.9009e-13 ...
       30  1.3959e-14  7.4010e-14  1.8369e-13  3.0883e-13  4.2175e-13  4.9490e-13 ...
       68 -2.6765e-08  4.9606e-08  3.7405e-07  6.8920e-07  8.8899e-07  1.1142e-06 ...
      ...         ...         ...         ...         ...         ...         ... ...


  results    U_N (m)                                                        ...
  set_ids          1          2          3          4          5          6 ...
 node_ids                                                                   ...
        9 1.4764e-04 5.8107e-04 1.2123e-03 1.9952e-03 2.7529e-03 3.1680e-03 ...
       96 1.4777e-04 5.8081e-04 1.2104e-03 1.9918e-03 2.7485e-03 3.1625e-03 ...
       95 1.6695e-04 6.7794e-04 1.4446e-03 2.3856e-03 3.2866e-03 3.7912e-03 ...
       10 1.6681e-04 6.7805e-04 1.4462e-03 2.3885e-03 3.2903e-03 3.7959e-03 ...
       30 1.4764e-04 5.8107e-04 1.2123e-03 1.9952e-03 2.7529e-03 3.1680e-03 ...
       68 1.4777e-04 5.8081e-04 1.2104e-03 1.9918e-03 2.7485e-03 3.1625e-03 ...
      ...        ...        ...        ...        ...        ...        ... ...

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20]

             results       U (m)                                                             ...
             set_ids           6           7           8           9          10          11 ...
 node_ids components                                                                         ...
        9          X  5.7822e-13  5.9149e-13  5.3316e-13  4.1647e-13  2.7073e-13  1.3329e-13 ...
                   Y  3.1675e-03  3.2277e-03  2.9633e-03  2.3102e-03  1.5053e-03  8.1690e-04 ...
                   Z  6.1003e-05  6.2516e-05  5.6466e-05  4.4106e-05  2.8780e-05  1.4367e-05 ...
       96          X -1.1142e-06 -1.1700e-06 -9.7434e-07 -7.7403e-07 -5.1423e-07 -1.5231e-07 ...
                   Y  3.1619e-03  3.2218e-03  2.9585e-03  2.3064e-03  1.5027e-03  8.1613e-04 ...
                   Z  6.1085e-05  6.2600e-05  5.6545e-05  4.4166e-05  2.8819e-05  1.4388e-05 ...
      ...        ...         ...         ...         ...         ...         ...         ... ...

Extract strain at all times or on a selection#

strain = simulation.elastic_strain_nodal(all_sets=True)
print(strain)

strain = simulation.elastic_strain_nodal(set_ids=simulation.set_ids[10:])
print(strain)
            results        EPEL                                                             ...
            set_ids           1           2           3           4           5           6 ...
node_ids components                                                                         ...
       9         XX -5.1055e-07  1.0529e-06  7.5275e-06  1.3842e-05  1.7878e-05  2.2371e-05 ...
                 YY -5.8226e-07  8.7907e-07  7.4010e-06  1.3689e-05  1.7612e-05  2.2143e-05 ...
                 ZZ  1.8693e-06 -3.1040e-06 -2.4796e-05 -4.5782e-05 -5.8972e-05 -7.4037e-05 ...
                 XY  1.1102e-16  2.2812e-16  4.7184e-16  7.9103e-16  1.3323e-15  1.2212e-15 ...
                 YZ -3.7610e-09 -5.8703e-08 -1.2875e-07 -2.0941e-07 -3.1235e-07 -3.4685e-07 ...
                 XZ -1.0658e-14 -5.6843e-14 -1.1369e-13 -1.7053e-13 -3.4106e-13 -3.4106e-13 ...
     ...        ...         ...         ...         ...         ...         ...         ... ...


            results        EPEL                                                             ...
            set_ids          11          12          13          14          15          16 ...
node_ids components                                                                         ...
       9         XX  3.1091e-06 -1.7232e-07 -5.0382e-07 -3.0068e-08  4.7140e-06  1.1642e-05 ...
                 YY  2.9312e-06 -2.7887e-07 -5.6070e-07 -1.7267e-07  4.5633e-06  1.1516e-05 ...
                 ZZ -9.9484e-06  8.2313e-07  1.8122e-06  4.3304e-07 -1.5362e-05 -3.8511e-05 ...
                 XY  4.7184e-16  3.6082e-16  1.1102e-16  4.0246e-16  4.6491e-16  7.3552e-16 ...
                 YZ -8.3922e-08 -2.5142e-08  6.5868e-09 -3.7990e-08 -9.8658e-08 -1.7393e-07 ...
                 XZ -8.5265e-14 -2.1316e-14 -6.6613e-15 -4.2633e-14 -1.1369e-13 -1.7053e-13 ...
     ...        ...         ...         ...         ...         ...         ...         ... ...

Animate strain eqv over all times#

strain_eqv = simulation.elastic_strain_eqv_von_mises_nodal(all_sets=True)
strain_eqv.animate(deform=True, title="E_eqv")
03 transient simulation

Total running time of the script: (0 minutes 3.802 seconds)

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