.. DO NOT EDIT. .. THIS FILE WAS AUTOMATICALLY GENERATED BY SPHINX-GALLERY. .. TO MAKE CHANGES, EDIT THE SOURCE PYTHON FILE: .. "examples\02-Performance-Improvements\01-mesh-external-layer.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_02-Performance-Improvements_01-mesh-external-layer.py: .. _ref_mesh_external_layer_example: Reduce Model Size by using Mesh External Layer for Result and Mesh extraction ============================================================================= **通过使用网格外层进行结果和网格提取来减少模型大小** 本例显示了静态分析中网格外层的后处理。外层是实体单元，其中至少有一个面朝向几何体外部。 该功能适用于所有类型的 Mechanical simulation，允许您缩小网格和提取数据的大小，以提高处理性能。 由于较大的应力和应变通常位于模型的表层，因此在大多数情况下，计算外层的结果可获得等效的最大值。 .. GENERATED FROM PYTHON SOURCE LINES 15-18 Perform required imports ------------------------ **执行所需的导入** .. GENERATED FROM PYTHON SOURCE LINES 20-21 本示例使用了一个提供的文件，您可以通过导入 DPF ``examples`` 包获得该文件。 .. GENERATED FROM PYTHON SOURCE LINES 21-25 .. code-block:: Python from ansys.dpf import post from ansys.dpf.post import examples .. GENERATED FROM PYTHON SOURCE LINES 26-29 Get ``Simulation`` object ---------------------------- **将结果文件加载到允许访问结果的 ``Simulation`` 对象中。** .. GENERATED FROM PYTHON SOURCE LINES 31-32 必须使用结果文件的路径实例化 ``Simulation`` 对象。例如，Windows 下为 ``"C:/Users/user/my_result.rst"`` 或 Linux 下为 ``"/home/user/my_result.rst"`` 。 .. GENERATED FROM PYTHON SOURCE LINES 32-43 .. code-block:: Python example_path = examples.download_crankshaft() # 自动检测模拟类型，请使用 simulation = post.load_simulation(example_path) # 要启用自动完成功能，请使用等效的命令： simulation = post.StaticMechanicalSimulation(example_path) # 打印 simulation，了解可用内容的概况 print(simulation) .. rst-class:: sphx-glr-script-out .. code-block:: none Static Mechanical Simulation. Data Sources ------------------------------ C:\Users\ff\AppData\Roaming\Python\Python310\site-packages\ansys\dpf\core\examples\result_files\crankshaft\crankshaft.rst DPF Model ------------------------------ Static 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 - structural_temperature: ElementalNodal Temperature ------------------------------ DPF Meshed Region: 69762 nodes 39315 elements Unit: m With solid (3D) elements ------------------------------ DPF Time/Freq Support: Number of sets: 3 Cumulative Time (s) LoadStep Substep 1 1.000000 1 1 2 2.000000 1 2 3 3.000000 1 3 .. GENERATED FROM PYTHON SOURCE LINES 44-47 Extract displacement data ------------------------- **提取位移数据** .. GENERATED FROM PYTHON SOURCE LINES 49-50 提取外部图层的位移数据。 .. GENERATED FROM PYTHON SOURCE LINES 50-61 .. code-block:: Python displacement_ext = simulation.displacement( external_layer=True ) # 默认该参数 `external_layer=False` displacement_ext.plot() print( f"`external_layer=True` 的节点数： {len(displacement_ext.index.mesh_index)}" ) print(f"`external_layer=False` 的节点数： {len(simulation.mesh.node_ids)}") .. image-sg:: /examples/02-Performance-Improvements/images/sphx_glr_01-mesh-external-layer_001.png :alt: 01 mesh external layer :srcset: /examples/02-Performance-Improvements/images/sphx_glr_01-mesh-external-layer_001.png :class: sphx-glr-single-img .. rst-class:: sphx-glr-script-out .. code-block:: none `external_layer=True` 的节点数： 64079 `external_layer=False` 的节点数： 69762 .. GENERATED FROM PYTHON SOURCE LINES 62-65 Extract stress/strain data -------------------------- **提取应力/应变数据** .. GENERATED FROM PYTHON SOURCE LINES 67-68 提取外层的应力或弹性应变数据。由于外层单元的连续性保持不变，因此可以在外层轻松完成平均值和不变量的计算。 .. GENERATED FROM PYTHON SOURCE LINES 68-86 .. code-block:: Python elemental_stress_ext = simulation.stress_principal_elemental( components=[1], external_layer=True ) elemental_stress_ext.plot() print( f"`external_layer=True` 的节点数： {len(elemental_stress_ext.index.mesh_index)}" ) print( f"`external_layer=False` 的节点数： {len(simulation.mesh.element_ids)}" ) elastic_strain_eqv_ext = simulation.elastic_strain_eqv_von_mises_nodal( external_layer=True ) elastic_strain_eqv_ext.plot() .. rst-class:: sphx-glr-horizontal * .. image-sg:: /examples/02-Performance-Improvements/images/sphx_glr_01-mesh-external-layer_002.png :alt: 01 mesh external layer :srcset: /examples/02-Performance-Improvements/images/sphx_glr_01-mesh-external-layer_002.png :class: sphx-glr-multi-img * .. image-sg:: /examples/02-Performance-Improvements/images/sphx_glr_01-mesh-external-layer_003.png :alt: 01 mesh external layer :srcset: /examples/02-Performance-Improvements/images/sphx_glr_01-mesh-external-layer_003.png :class: sphx-glr-multi-img .. rst-class:: sphx-glr-script-out .. code-block:: none `external_layer=True` 的节点数： 31374 `external_layer=False` 的节点数： 39315 .. GENERATED FROM PYTHON SOURCE LINES 87-90 Extract the external layer on a selection of elements ----------------------------------------------------- **提取选定单元上的外部图层** .. GENERATED FROM PYTHON SOURCE LINES 90-98 .. code-block:: Python all_elements = simulation.mesh.element_ids elements = [] for i in range(0, int(all_elements.size / 2)): elements.append(all_elements[i]) elemental_stress_ext = simulation.stress_principal_elemental(external_layer=elements) elemental_stress_ext.plot() .. image-sg:: /examples/02-Performance-Improvements/images/sphx_glr_01-mesh-external-layer_004.png :alt: 01 mesh external layer :srcset: /examples/02-Performance-Improvements/images/sphx_glr_01-mesh-external-layer_004.png :class: sphx-glr-single-img .. GENERATED FROM PYTHON SOURCE LINES 99-102 Extract the external layer on a selection of elements for nodal results ----------------------------------------------------------------------- **在所选单元上提取外部图层以获得节点结果** .. GENERATED FROM PYTHON SOURCE LINES 102-108 .. code-block:: Python elastic_strain_eqv_ext = simulation.elastic_strain_eqv_von_mises_nodal( external_layer=elements ) elastic_strain_eqv_ext.plot() .. image-sg:: /examples/02-Performance-Improvements/images/sphx_glr_01-mesh-external-layer_005.png :alt: 01 mesh external layer :srcset: /examples/02-Performance-Improvements/images/sphx_glr_01-mesh-external-layer_005.png :class: sphx-glr-single-img .. GENERATED FROM PYTHON SOURCE LINES 109-112 Extract the external layer on a selection of elements and scope results ----------------------------------------------------------------------- **提取选定单元上的外部图层并确定结果范围** .. GENERATED FROM PYTHON SOURCE LINES 112-120 .. code-block:: Python sub_elements = [] for i in range(0, int(len(elements) / 2)): sub_elements.append(elements[i]) elemental_stress_ext = simulation.stress_principal_elemental( external_layer=elements, element_ids=sub_elements ) elemental_stress_ext.plot() .. image-sg:: /examples/02-Performance-Improvements/images/sphx_glr_01-mesh-external-layer_006.png :alt: 01 mesh external layer :srcset: /examples/02-Performance-Improvements/images/sphx_glr_01-mesh-external-layer_006.png :class: sphx-glr-single-img .. rst-class:: sphx-glr-timing **Total running time of the script:** (0 minutes 6.251 seconds) .. _sphx_glr_download_examples_02-Performance-Improvements_01-mesh-external-layer.py: .. only:: html .. container:: sphx-glr-footer sphx-glr-footer-example .. container:: sphx-glr-download sphx-glr-download-jupyter :download:`Download Jupyter notebook: 01-mesh-external-layer.ipynb <01-mesh-external-layer.ipynb>` .. container:: sphx-glr-download sphx-glr-download-python :download:`Download Python source code: 01-mesh-external-layer.py <01-mesh-external-layer.py>` .. only:: html .. rst-class:: sphx-glr-signature `Gallery generated by Sphinx-Gallery `_