ESTIMATION OF BLAST LOADS FOR STUDYING THE DYNAMIC EFFECTS OF COEFFCIENT OF FRICTION ON BURIED PIPES BY SIMULATION

Abstract

In the study of dynamic behavior of buried structures due to blast by simulation, ground media, structures, blast loads, etc. are required. In this study, different types of blast scenarios and blast loads for various explosives were considered using [10]. Consequently, ground movement parameters were estimated and blast load durations for studying the dynamic effects of coefficient of friction on buried pipes due to blast loads by simulation were estimated. Simulated models for ‘slip’ and ‘no-slip’ conditions were analyzed using explicit code in ABAQUS with ‘no-slip’ condition serving as control. Dimensional analysis was used to further process the results. From the results, it was observed that the ground shock parameters attenuate greatly in
ground media as the distance increases. In addition, it was observed that duration of blast play a significant role in the behavior of buried structures while the observed parameters reduced at coefficient of friction of 0.8 compared to the conventional coefficient of friction for static analysis. Parameters thus determined would help in the dynamic behavior study of buried structures due to blast using numerical codes like ABAQUS. This is with a view to designing buried structures like pipes to resist the effects of blast. Consequently, the environmental risk and hazards caused by blasts would be greatly reduced.