Bulk and shear elastic moduli

In our treatment of high-pressure mechanical properties, we assume that the bcc solid is subject to a stress tensor of the general form 

Dislocations and Plasticity in bcc Transition Metals at High Pressure 

Observed equation of state (EOS) and elasticity properties in Ta, Mo, and V at their respective equilibrium volumes [58], with volume in atomic units (a.u.) and stress values in GPa 

Note These data are fully reflected in the present MGPT potentials. 

Of special interest here to bcc screw dislocation motion is the effective shear modulus along the 111 slip direction, 

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