When buildings are subjected to earthquake ground shaking, torsional (rotational) vibration (rotation about the vertical axis) will be produced in addition to translational vibration.
The maximum rotational motion was about 3.8 × 10−5 rad/sec on the EW component at station T1S3R.
For square lattices, this model has rotational symmetry about the center of the lattice and reflection symmetry about four reflection lines.
The frequencies of small vibrations of the fullerenes along the nanotube axis (ν d), rotational vibrations about the nanotube axis (ν z ) and rotational vibrations about two mutually perpendicular lateral axes (ν x, ν y ) are also calculated and listed in Table 1.
At temperatures above the glass transition temperature (Tg) there are two major molecular motions in this copolymer: a backbone motion (the rotational motion about single bonds) and a methyl side group rotation.
In this case the model has two types of planar symmetries: rotational symmetry about the center of the lattice and mirror reflection symmetry about four reflection lines.
Equation of rotational motion about the driftage centroid (8).
However, the rotational freedom about the additional C C bond would lead to altered rigidity of the linkage region.
AsF6− anion exhibits rotational disorder about the three crystallographic directions of which the y-direction is least hindered.
To employ the rotational motion about the Z axis in an H-type stage, a 1-rotational DOF flexure joint is proposed.
