A note on scaling peak acceleration, velocity and displacement of strong earthquake shaking by Modified Mercalli Intensity (MMI) and site soil and geologic conditions

1992 ◽  
Vol 11 (2) ◽  
pp. 101-110 ◽  
Author(s):  
M.D. Trifunac ◽  
V.W. Lee
Keyword(s):  
Strong Earthquake ◽  
Peak Acceleration

FUZZY-BASED CLUSTERING OF EPICENTERS AND STRONG EARTHQUAKE-PRONE AREAS

2013 ◽  
Vol 12 (1) ◽  
pp. 1-10 ◽  
Author(s):  
Mikhail Dobrovolsky ◽  
Alexei Gvishiani ◽  
Sergey Agayan ◽  
Boris Dzeboev
Keyword(s):  
Strong Earthquake

Comparing Shock, Random and Sine Vibration Loads of the Electronic Equipment

2005 ◽  
Author(s):  
Frank Fan Wang
Keyword(s):  
Dynamic Load ◽  
Random Vibration ◽  
Sine Wave ◽  
Electronic Equipment ◽  
Dynamic Loads ◽  
Peak Acceleration ◽  
Maximum Acceleration ◽  
Dynamic Excitations ◽  
Dynamic Damage ◽  
Resonant Point

It is a challenge to correlate different dynamic loads. Often, attempts are made to compare the peak acceleration of sine wave to the root mean square (RMS) acceleration of random vibration and shock. However, peak sine acceleration is the maximum acceleration at one frequency. Random RMS is the square root of the area under a spectral density curve. These are not equivalent. This paper is to discuss a mathematical method to compare different kinds of dynamic damage at the resonant point of the related electronic equipment. The electronic equipment will vibrate at its resonance point when there are dynamic excitations. The alternative excitation at the resonant frequency causes the most damage. This paper uses this theory to develop a method to correlate different dynamic load conditions for electronic equipment. The theory is that if one kind of dynamic load causes the same levels of damaging effects as the other, the levels of vibration can then be related.

Character of geoelectric intermediate term precursory anomaly and judgment for intermediate term tendency of strong earthquake

1999 ◽  
Vol 12 (2) ◽  
pp. 207-214 ◽  
Author(s):  
Zhi-Xian Wang ◽  
Xue-Min Zhang ◽  
Yong-Qing Li ◽  
Yu-Chun Li ◽  
Hong-Liu Li
Keyword(s):  
Strong Earthquake

Martial arts striking hand peak acceleration, accuracy and consistency

2013 ◽  
Vol 13 (6) ◽  
pp. 653-658 ◽  
Author(s):  
Osmar Pinto Neto ◽  
Ana Carolina De Miranda Marzullo ◽  
Richard P. Bolander ◽  
Cynthia A. Bir
Keyword(s):  
Martial Arts ◽  
Peak Acceleration
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