Abstract
In the work, as a research object, a protective device of a domed form is used which is used by pyrotechnic units to localize an emergency situation in the event of an explosion inside a small hazardous object. It is noted that one of the most problematic places of its application is the development of recommendations, implementation of which should ensure the prevention of the development of an emergency event up to a level of emergency on such priority effects as the number of victims and the number of victims. It is shown that the definition of such recommendations, providing localization of the consequences of an emergency in the case of an explosion of a small explosive object inside a specialized protective device, requires the obtaining of a mathematical model of localization of the focal point of an emergency. This model should provide an assessment of the strength of the technical means of localization of fragments and become the basis for the correction of existing operational procedures in the case of its application by pyrotechnic units. In the course of the study, the Eulerian-Lagrangian approach is used, which would allow obtaining a mathematical model of localization with the help of a dome-shaped form of the consequences of emergency situations in the event of an explosion inside a small-sized dangerous object. In practice, a mathematical model is implemented in a finite element packet using the library of the ANSYS/AUTODYN computer system. This allows not to create an actual new package of applications every time, as was done before to describe similar models. Due to this, an assessment of the strength of the technical means of localization of fragments is provided. In comparison with similar well-known models, the developed mathematical model allows to estimate the size of the minimum thickness of the protective device. It allows to withstand the explosion of a small-sized explosive object and to determine the minimum mass of the protective equipment taking into account the operational capabilities of the combat calculation of the pyrotechnic unit.
Highlights
Pyrotechnic units of the civil defense operational and rescue service are engaged in cleaning up the facilities and terrain of Ukraine from explosive remnants of wars that have occurred in the past and are currently taking place
One of the directions of this activity is the localization of small-sized explosive objects [1]
The object of research is a dome-shaped protective device, which is used by pyrotechnic units to localize an emergency in the event of a small dangerous object exploding inside it
Summary
Pyrotechnic units of the civil defense operational and rescue service are engaged in cleaning up the facilities and terrain of Ukraine from explosive remnants of wars that have occurred in the past and are currently taking place. Increasing the operational readiness of pyrotechnics requires an improvement in their technical equipment. One of the directions of this activity is the localization of small-sized explosive objects [1]. The lack of appropriate scientific support hinders the creat ion of new types of protective devices, and their implementation in practice. The study of a perspective dome-shaped protective device, which should provide localization of an emergency situation in the event of an explosion of a smallsized dangerous object inside it, is relevant
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
