Analysis on an exponential attenuation factor in the modified Friedlander equation by overpressure tests

CHENG Xiang; YANG Ming; GUO Ya-li; HAN Yan

doi:10.11883/1001-1455(2009)04-0425-04

Volume 29 Issue 4

Sep. 2014

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CHENG Xiang, YANG Ming, GUO Ya-li, HAN Yan. Analysis on an exponential attenuation factor in the modified Friedlander equation by overpressure tests[J]. Explosion And Shock Waves, 2009, 29(4): 425-428. doi: 10.11883/1001-1455(2009)04-0425-04

Citation:

CHENG Xiang, YANG Ming, GUO Ya-li, HAN Yan. Analysis on an exponential attenuation factor in the modified Friedlander equation by overpressure tests[J]. Explosion And Shock Waves, 2009, 29(4): 425-428. doi: 10.11883/1001-1455(2009)04-0425-04

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Analysis on an exponential attenuation factor in the modified Friedlander equation by overpressure tests

doi: 10.11883/1001-1455(2009)04-0425-04

1.
National Defense Key Laboratory of Electronic Testing Technology, North University of China, Taiyuan 030051, Shanxi, China;
2.
School of Science, North University of China, Taiyuan 030051, Shanxi, China

Publish Date: 2009-07-25

Abstract

Abstract

The modified Friedlander equation was introduced to analyze the explosive shock-wave overpressure transmission varied with time in air. The logarithm of the logarithm of the exponential attenuation factor in the equation was found as a linear function of time. By using the found linear relationship, a new mathematical model was presented to describe the shock-wave overpressure evolution. Comparisons of the fitted overpressures by the presented model with the recorded ones in experiments reveal that the new mathematical model is precise, universal and applicable.
- mechanics of explosion,
- exponential attenuation factor,
- overpressure test,
- Friedlander formula,
- air explosion,
- overpressure