.. _sphx_glr_api_gallery_structural_engineering_energy:

Energy methods
--------------

Deflections from strain energy.


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    <div class="sphx-glr-thumbcontainer" tooltip="In his 1873 engineering thesis at Turin, extended into a book in 1879, Alberto Castigliano showed that the partial derivative of the strain energy with respect to a load is the displacement at that load, in its direction: \delta = \partial U/\partial P. For a beam in bending,">

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  .. image:: /api/gallery/structural_engineering/energy/images/thumb/sphx_glr_plot_01_castigliano_thumb.png
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  :doc:`/api/gallery/structural_engineering/energy/plot_01_castigliano`

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      <div class="sphx-glr-thumbnail-title">Castigliano's theorem (1879)</div>
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    </div>


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   :hidden:

   /api/gallery/structural_engineering/energy/plot_01_castigliano