Hello,
When defining the profile for a generalized beam element in Abaqus, it asks for J. In the documentation, J is defined as torsional rigidity. However, from mechanics torsional rigidity is the product of the polar moment of inertia and the shear modulus, GJ. Does the program need J or GJ...
In section IEC 61400-1, on p. 45 Table 1 specifies Vref (10 min. avg, at hub height) for wind turbines, based on class. Later throughout chapter 6, the speed Vhub is used. How are these two speeds related? I cannot seem to find a definition of Vhub (only that it is velocity at hub height).
