Ok I wan't to start by saying I'm in a ridiculous solid state physics class where the stuff we are learning is either poorly explained by our text book or even non-existent in the text. My teacher asked me the following question ... A single cube-shaped crystal of a simple cubic metal with face normals [100][010][001] has a value of the elastic stiffness constant c11 = cxx = 293 GPa. Write down the generalized form of Hooke's Law, in the tensor form and in the reduced index (matrix) form.(adsbygoogle = window.adsbygoogle || []).push({});

So I just want to say, outside of this class I've never seen a tensor in my life except in classical dynamics which made sense for rotations. We went over tensors for like 20 minutes, where the basic idea of a tensor was described as being an object that calls a particular value a number of times. I have a somewhat ok idea of what a tensor is, though never in my life have I ever had to use them. I have no idea what my teacher is talking about and I can't find good information on the web or in my horrid little Intro to solids Charles Kittel book.

Apparently hookes law is a fourth rank tensor and I have no freakin clue why that is.

Thanks for the replies

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# Tensor Strains

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