This in turn will change the harmonic vibration
pattern of your barrel.
During the tilting of the tower before it fell on the ground, a significant harmonic vibration
was recorded on four seismic stations at a distance of 70 m to 120 m from the tower.
The small print on the box says: "This revolutionary training technique delivers harmonic vibration
to the body, stimulating a natural reflex.
The fans and motors were put through a harmonic vibration
check to determine if any speeds needed to be locked out of the system between 1800 and 3600 rpm (VFD frequency between 30 and 60 Hz).
Single point or frequency sweep loading is available, and techniques are also available to equivalence random vibration to harmonic vibration
It is known that a harmonic vibration
of frequency co and displacement amplitude [d.
In sections on vibrations systems, principles and guidelines for damping control, and the design of supplemental damping, they discuss such topics as the free and harmonic vibration
of single-degree-of-freedom systems, linear proportionally damped multi-degree-of-freedom systems, principles of damper design, and nonlinear damping.
This set up a nice harmonic vibration
in the ground which was recorded in our nearby borehole seismometers.
Features of the 70-400 series include laser cut bodies for accurate cutting, laser cut expansion slots to reduce harmonic vibration
, and a laser cut and polished bore for true centering of the blade.
Both barrels should be stiff enough to overcome much of the harmonic vibration
caused when firing a .
The sections are further equipped with braces to ensure strength and eliminate harmonic vibration
A fine thread adjustment permits users to tune out harmful harmonic vibration
in the field.