harmonic vibration การใช้

• Tuned mass dampers stabilize against violent motion caused by harmonic vibration.
• The speed led to harmonic vibrations that caused the trouble.
• :Sound is simply harmonic vibrations occuring in a substance.
• The uneven firing intervals resulted in rough-running engines with unpleasant harmonic vibrations at certain engine speeds.
• The frequencies of their fundamental and harmonic vibrations are subject to the same inharmonicity as strings.
• Beginning in 1965, the 200 engines were upgraded to seven main bearings to reduce harmonic vibrations and increase durability.
• This uneven firing caused harmonic vibrations in the drive train that were perceived as a rough-running engine by the buyers.
• The process required high rotational speeds, but at certain speeds harmonic vibrations developed that threatened to tear the machinery apart.
• Either by the sheer power of it or by creating some kind of harmonic vibration that will shake the body apart?
• Another problem encountered in previous Mercury-Redstone flights were harmonic vibrations induced by aerodynamic stress in the topmost section of the elongated Redstone.
• However, sub-harmonic vibrations, which can create annoying audible noise, may be caused in larger parts near the machine due to the ultrasonic welding frequency.
• Also, the " nonspeaking " string length is increased, which may have an effect on the strings'harmonic vibration ( " see sympathetic resonance " ).
• Does that goofy background music set up some sort of harmonic vibration in their brain that causes them to forget the things they learned in first grade?
• The Foxtrot class was designed to replace the earlier Zulu class, which suffered from structural weaknesses and harmonic vibration problems that limited its operational depth and submerged speed.
• Also, due to the even number of power strokes per revolution, the straight-8 does not produce unpleasant odd-order harmonic vibration in the vehicle's driveline at low engine speeds.
• He speculates the blast may have created " harmonic vibrations " in the building's concrete columns that persisted a few seconds after the blast and protracted the ground tremors.
• We suggested several cures, but Rich from Newton e-mailed us this info : " Could the hum be caused by a harmonic vibration in the spring balances of the windows?
• 2 ) So as you go further along the Fibonacci sequence the deviation gets smaller and smaller but it never disappears, and it actually fluctuates like a damped harmonic vibration.
• The oscillation in the tailplane spar was overlapped by harmonic vibrations from the engine; the combined effect being enough to cause structural failure at the rear fuselage / fin attachment point.
• The floating barrel increased the accuracy of the rifle by allowing it to vibrate freely and consistently, whereas wooden forends in contact with barrels, if not properly fitted, affected the harmonic vibrations of the barrel.