- 期刊
- OpenAccess
Comparison of Blast Load Main Parameters Based on Indian and American Standard
摘要
Recently, the terrorist activities are been increased broadly. Any explosion takes place close to any building can cause significant damage of the building, death of people and occupants injuries. While, most of the researches in this field made their conclusions based on Indian Code (IS 4991-1968), therefore, this research will determine the blast load main parameters (peak reflected pressure, peak side-on pressure and positive phase duration) which cover any explosion based on American Code (Unified Facilities Criteria, UFC-2008, (formerly TM 5-1300)) and compare the results with the Indian code. The techniques used in this study for the derivation of the main blast load parameters based on empirical method, which contained equations against experimental data with little physical relationships. The comparison scope in this study covers both spherical (pressure on air) and hemispherical (pressure on ground) with short and long standoff distances. The results of peak reflected pressure and peak side-on pressure variation with standoff distance revealed that the peak pressures based on American standard is about 45% relative to Indian standard for short standoff distance (less than 18 m).While, the difference reach 10% for long standoff distance (more than 36 m). It has been observed that from the variation of positive phase duration with standoff distance of both Codes, the duration based on Indian Standard is significantly less than the duration based on American Standard for short distances and up to 32 m. However, when the distance value increased more than 32 m the duration based on Indian standard lies between hemispherical and spherical waves duration based on American Standard.