Compute Strain and Stress in Spherical Coordinates
In theory of elastic media, the stress of the material is a contraction of the rank-4 stiffness tensor (a property of the material) and the rank-2 strain (a property of its deformation). The strain is the symmetrized gradient of the deformation field.
In[1]:=1

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https://wolfram.com/xid/0bxaafn49t8py4gop4m5mpsagpbvvd0y83hdbiu-5umy70
In[2]:=2

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https://wolfram.com/xid/0bxaafn49t8py4gop4m5mpsagpbvvd0y83hdbiu-j5lejj
Out[2]=2

In[3]:=3

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https://wolfram.com/xid/0bxaafn49t8py4gop4m5mpsagpbvvd0y83hdbiu-zou3c
Out[3]=3

Out[3]=3
