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Numerical simulation of the front of an air shock wave in a ground and air explosion in the software package LS-DYNA
- Authors: Mkrtychev O.V1, Savenkov A.Y1
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Affiliations:
- Moscow State University of Civil Engineering (National Research University)
- Issue: Vol 14, No 6 (2018)
- Pages: 467-474
- Section: Analysis and design of building structures
- URL: https://journals.rudn.ru/structural-mechanics/article/view/20424
- DOI: https://doi.org/10.22363/1815-5235-2018-14-6-467-474
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Abstract
Introduction and objectives. When calculating buildings and structures for special combinations of loads caused by the action of air shock waves, it is necessary to determine the main parameters of the actual load. The regulatory approach implemented in modern regulatory documents proposes the use of simplified calculation methods based on the use of equivalent static loads. The aim of the study is to obtain the basic parameters of air shock waves, as well as to consider the nature of the propagation of the shock wave front during an explosion on the ground and in the air, using numerical simulation. Materials and methods. To obtain the basic parameters of air shock waves, high-precision numerical methods implemented in the modern LS-DYNA software package are considered. To describe the explosion process, the LagrangianEulerian approach is used. Results. Isopoles and graphs of excess overpressure Δ Р ф over atmospheric pressure in an air shock wave were obtained when the epicenter of the explosion was located at ground level and in the air, as well as at a distance from the designed structure. Conclusions. The considered method of numerical simulation allows to obtain the main parameters of air shock waves, which can be used for further calculation of building structures.
About the authors
Oleg V Mkrtychev
Moscow State University of Civil Engineering (National Research University)
Author for correspondence.
Email: mkrtychev@yandex.ru
Dr Sci. (Eng.), Professor of the Strength of Materials Department
26 Yaroslavskoye Shosse, Moscow, 129337, Russian FederationAnton Y Savenkov
Moscow State University of Civil Engineering (National Research University)
Email: savenkov.asp@mail.ru
post-graduate student, student of the Strength of Materials Department
26 Yaroslavskoye Shosse, Moscow, 129337, Russian FederationReferences
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