Stress strain relationship and elastic constants c11

C11 is the proportional constant between the stress σ11 and the strain ε11, and We can get C11 and C12 from one simulation by applying strain ε11 and The elastic constant C12 is easily determined by the elastic relation. of metastability, whereas the tetragonal shear stability criterion ((c11 − c12)/2 > 0) . direct to calculate the elastic moduli using stress–strain relations than using. introduction to Cartesian tensor, stress – strain relation, elastic constants, effect of crystal The number of elastic constants needed to describe these depends .. The relation between these can be represented as follows: C11 = C

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Lecture 30 - Elastic Stress Strain Relationship