.. _user_guide_accessing_file_metadata:

**********************
Browse result metadata
**********************

除了 :class:`Simulation <ansys.dpf.post.simulation.Simulation>` 对象是浏览结果文件内容的入口外，它还提供了重要的元数据（metadata），如分析类型和可用结果。

以下是浏览结果元数据的方法：

.. code:: python

    # 实例化仿真对象

    >>> from ansys.dpf import post
    >>> from ansys.dpf.post import examples
    >>> simulation = post.load_simulation(examples.multishells_rst)

    # 浏览结果元数据

    >>> print(simulation)
    Static Mechanical Simulation.


    Data Sources
    ------------------------------
    DPF  DataSources:
      Result files:
         result key: rst and path: d:\ansysdev\sandbox\pydpf-core\src\ansys\dpf\core\examples\model_with_ns.rst
      Secondary files:


    DPF Model
    ------------------------------
    Static analysis
    Unit system: MKS: m, kg, N, s, V, A, degC(摄氏度)
    Physics Type: Mechanical
    Available results:
         -  displacement: Nodal Displacement
         -  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:
      7079 nodes
      4220 elements
      Unit: m
      With solid (3D) elements, shell (2D) elements, shell (3D) elements
    ------------------------------
    DPF  Time/Freq Support:
      Number of sets: 1
    Cumulative     Time (s)       LoadStep       Substep
    1              1.000000       1              1


PyDPF-Post 支持四种不同的力学结果分析类型：

* Static analysis 静态分析
* Modal analysis 模态分析
* Harmonic analysis 谐波分析
* Transient analysis 瞬态分析

传统 ``Solution`` 对象还支持热力学结果和电学结果。

Mesh
----
您还可以从 ``Simulation`` 对象访问网格数据：

.. code:: python

    # 实例化仿真对象

    >>> from ansys.dpf import post
    >>> from ansys.dpf.post import examples
    >>> simulation = post.load_simulation(examples.multishells_rst)

    # Access the mesh

    >>> mesh = simulation.mesh
    >>> print(mesh)
    DPF  Mesh:
      7079 nodes
      4220 elements
      Unit: m
      With solid (3D) elements, shell (2D) elements, shell (3D) elements