.. DO NOT EDIT. .. THIS FILE WAS AUTOMATICALLY GENERATED BY SPHINX-GALLERY. .. TO MAKE CHANGES, EDIT THE SOURCE PYTHON FILE: .. "examples\01-twin_examples\00-coupledClutches.py" .. LINE NUMBERS ARE GIVEN BELOW. .. only:: html .. note:: :class: sphx-glr-download-link-note :ref:`Go to the end ` to download the full example code .. rst-class:: sphx-glr-example-title .. _sphx_glr_examples_01-twin_examples_00-coupledClutches.py: .. _ref_example_coupledClutches: Twin evaluation --------------- This example shows how you can use PyTwin to load and evaluate a twin model. The model consists of three coupled clutches. It has four inputs (applied torque and the three clutch openings) and three outputs (the computed torque on each clutch). .. GENERATED FROM PYTHON SOURCE LINES 11-14 .. image:: /_static/coupledClutches.png :width: 400pt :align: center .. GENERATED FROM PYTHON SOURCE LINES 14-17 .. code-block:: Python # sphinx_gallery_thumbnail_path = '_static/coupledClutches.png' .. GENERATED FROM PYTHON SOURCE LINES 18-22 Perform required imports ~~~~~~~~~~~~~~~~~~~~~~~~ Perform required imports, which include downloading and importing the input files. .. GENERATED FROM PYTHON SOURCE LINES 22-32 .. code-block:: Python import matplotlib.pyplot as plt import pandas as pd from pytwin import TwinModel, download_file, load_data twin_file = download_file("CoupledClutches_23R1_other.twin", "twin_files", force_download=True) csv_input = download_file("CoupledClutches_input.csv", "twin_input_files", force_download=True) twin_config = download_file("CoupledClutches_config.json", "twin_input_files", force_download=True) .. GENERATED FROM PYTHON SOURCE LINES 33-37 Define auxiliary functions ~~~~~~~~~~~~~~~~~~~~~~~~~~ Define auxiliary functions for comparing and plotting the results from different simulations executed on the same twin model. .. GENERATED FROM PYTHON SOURCE LINES 37-86 .. code-block:: Python def plot_result_comparison(step_by_step_results: pd.DataFrame, batch_results: pd.DataFrame): """Compare the results obtained from two different simulations executed on the same twin model. The two results datasets are provided as Pandas dataframes. The function plots the results for all the outputs.""" pd.set_option("display.precision", 12) pd.set_option("display.max_columns", 20) pd.set_option("display.expand_frame_repr", False) # Plot the runtime outputs columns = step_by_step_results.columns[1::] result_sets = 2 # Results from only step-by-step, batch_mode fig, ax = plt.subplots(ncols=result_sets, nrows=len(columns), figsize=(18, 7)) if len(columns) == 1: single_column = True else: single_column = False fig.subplots_adjust(hspace=0.5) fig.set_tight_layout({"pad": 0.0}) for ind, col_name in enumerate(columns): # Plot runtime results if single_column: axes0 = ax[0] axes1 = ax[1] else: axes0 = ax[ind, 0] axes1 = ax[ind, 1] step_by_step_results.plot(x=0, y=col_name, ax=axes0, ls=":", color="g", title="Twin Runtime - Step by Step") axes0.legend(loc=2) axes0.set_xlabel("Time [s]") # Plot twin results in CSV file in batch mode batch_results.plot(x=0, y=col_name, ax=axes1, ls="-.", color="g", title="Twin Runtime - Batch Mode") axes1.legend(loc=2) axes1.set_xlabel("Time [s]") if ind > 0: axes0.set_title("") axes1.set_title("") # Show plot plt.show() .. GENERATED FROM PYTHON SOURCE LINES 87-90 Load the twin runtime and external CSV file ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Load the twin runtime and instantiate it. .. GENERATED FROM PYTHON SOURCE LINES 90-97 .. code-block:: Python print("Loading model: {}".format(twin_file)) twin_model = TwinModel(twin_file) twin_model_input_df = load_data(csv_input) data_dimensions = twin_model_input_df.shape number_of_datapoints = data_dimensions[0] - 1 .. rst-class:: sphx-glr-script-out .. code-block:: none Loading model: C:\Users\ansys\AppData\Local\Temp\TwinExamples\twin_files\CoupledClutches_23R1_other.twin .. GENERATED FROM PYTHON SOURCE LINES 98-102 Define the initial inputs of the twin model and initialize it ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Define the inputs of the twin model, initialize it, and collect the output values. .. GENERATED FROM PYTHON SOURCE LINES 102-108 .. code-block:: Python twin_model.initialize_evaluation(json_config_filepath=twin_config) outputs = [twin_model.evaluation_time] for item in twin_model.outputs: outputs.append(twin_model.outputs[item]) .. GENERATED FROM PYTHON SOURCE LINES 109-113 Simulate the twin in step by step mode ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Loop over all inputs, simulating the twin at each time step and collecting the corresponding output values. .. GENERATED FROM PYTHON SOURCE LINES 113-131 .. code-block:: Python sim_output_list_step = [outputs] data_index = 0 while data_index < number_of_datapoints: # Gets the stop time of the current simulation step time_end = twin_model_input_df.iloc[data_index + 1][0] step = time_end - twin_model.evaluation_time inputs = dict() for column in twin_model_input_df.columns[1::]: inputs[column] = twin_model_input_df[column][data_index] twin_model.evaluate_step_by_step(step_size=step, inputs=inputs) outputs = [twin_model.evaluation_time] for item in twin_model.outputs: outputs.append(twin_model.outputs[item]) sim_output_list_step.append(outputs) data_index += 1 results_step_pd = pd.DataFrame(sim_output_list_step, columns=["Time"] + list(twin_model.outputs), dtype=float) .. GENERATED FROM PYTHON SOURCE LINES 132-137 Simulate the twin in batch mode ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Reset/re-initialize the twin and run the simulation in batch mode, which passes all the input data, simulates all the data points, and collects all the outputs at once. .. GENERATED FROM PYTHON SOURCE LINES 137-148 .. code-block:: Python data_index = 0 inputs = dict() for column in twin_model_input_df.columns[1::]: inputs[column] = twin_model_input_df[column][data_index] twin_model.initialize_evaluation(inputs=inputs, json_config_filepath=twin_config) outputs = [twin_model.evaluation_time] for item in twin_model.outputs: outputs.append(twin_model.outputs[item]) results_batch_pd = twin_model.evaluate_batch(twin_model_input_df) .. GENERATED FROM PYTHON SOURCE LINES 149-152 Plot results ~~~~~~~~~~~~ Plot the results and save the images on disk. .. GENERATED FROM PYTHON SOURCE LINES 152-154 .. code-block:: Python plot_result_comparison(results_step_pd, results_batch_pd) .. image-sg:: /examples/01-twin_examples/images/sphx_glr_00-coupledClutches_001.png :alt: Twin Runtime - Step by Step, Twin Runtime - Batch Mode :srcset: /examples/01-twin_examples/images/sphx_glr_00-coupledClutches_001.png :class: sphx-glr-single-img .. rst-class:: sphx-glr-timing **Total running time of the script:** (0 minutes 6.178 seconds) .. _sphx_glr_download_examples_01-twin_examples_00-coupledClutches.py: .. only:: html .. container:: sphx-glr-footer sphx-glr-footer-example .. container:: sphx-glr-download sphx-glr-download-jupyter :download:`Download Jupyter notebook: 00-coupledClutches.ipynb <00-coupledClutches.ipynb>` .. container:: sphx-glr-download sphx-glr-download-python :download:`Download Python source code: 00-coupledClutches.py <00-coupledClutches.py>` .. only:: html .. rst-class:: sphx-glr-signature `Gallery generated by Sphinx-Gallery `_