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References in periodicals archive ?
By definition, natural frequency is observed in a springmass system.
These process parameters have effects on the natural frequency and tensioning stress field of a circular saw blade.
Step 6: The frequency within 20-80 Hz for which the amplitude is maximum is the first natural frequency.
Least mode frequencies are observed for 1st, 2nd, 3rd, and 4th modes for F-F-F-F ( four side free), S-S-S-S (four sides simply supported) and C-F-F-F (Cantilever) boundary conditions and the highest natural frequency is observed for C-C-C-C (four sides clamped) boundary condition.
In order to determine the fundamental natural frequency electronic exciter was used.
In this sense, the strong coupling could be judged by any unneglectable departure of coupled natural frequencies from every natural frequency of the uncoupled flexible structures and cavity.
(a) Accelerometer (PCB 352C42) Sensitivity 10.2 mV/m/[s.sup.2] Broadband resolution [+ or -]491 m/[s.sup.2] pk (1 to 10,000 Hz) Frequency range ([+ or -]5%) 0.005 m/[s.sup.2] rms Weight 1 to 9000 Hz Height, hex 2.8 g (b) Impact hammer (PCB 086C03) Sensitivity 2.28 mV/N Measurement range [+ or -]2224 Npk Resonant frequency 22 kHz Excitation voltage 20 to 30 VDC Hammer mass 0.16 kg Tip type Steel (c) NI PXI (NI-4472) Number of analog inputs 8 Resolution 24 bits Sampling rate 102.4 kS/s Input range [+ or -]10V Dynamic range 110 dB Table 4: Summary of the measured natural frequency (modal test results).
Feng, "Effects of surface elasticity and residual surface tension on the natural frequency of microbeams," Applied Physics Letters, vol.
(i) Case of T-1 (symmetric first): lateral natural frequency is 0.9 Hz M = 2.14e5, m = 1.4969e4, k = 7.307361e6, and C = 2.8262e4
According to the existing research, the natural frequency of a human-standing body is about 7.5 Hz, and the frequency of a sitting posture in the cab is generally 4-6 Hz.
Mesh refinement resulted in a significant increase in processing time without significant changes in results of natural frequency.
Taylor and other Philip Stein fans swear by Natural Frequency Technology.