Influence of the stress-strain state, arising up at dynamic loadings on safe external of helmet environments.

Authors

  • А. S. Byelikov Department of Life Safety, State Higher Education Establishment “Pridneprovsk State Academy of Civil Engineering and Architecture”, 24-A, Chernishevskogo st., Dnipropetrovsk 49600, Ukraine., Ukraine https://orcid.org/0000-0001-5822-9682
  • О. А. Sabitova Department of Life Safety, State Higher Education Establishment “Pridneprovsk State Academy of Civil Engineering and Architecture”, 24-A, Chernishevskogo st., Dnipropetrovsk 49600, Ukraine., Ukraine https://orcid.org/0000-0001-5552-4512
  • А. S. Chaplyhin Kominternovskiy District Department of the Main Directorate DSNS Ukraine in Kharkiv region, st. Grain 4-а, 61124, Kharkiv, 61046, Ukraine., Ukraine https://orcid.org/0000-0002-3213-8210
  • N. V. Dolhopolova The A.N. Podgorny Institute for Mechanical Engineering Problems of the National Academy of Sciences of Ukraine, 2/10 Dm. Pozharsky st.,Kharkiv, 61046, Ukraine., Ukraine https://orcid.org/0000-0002-4326-2284

Keywords:

accident recovery and repair construction works, safety of work, protective helmets and visor, curvature radius and thickness of monolithic glazing visor, the calculation of strength.

Abstract

Purpose. Due to modernization of construction of monolithic panel of glazing took away the increase of safety of leadthrough of emergency-restoration and repair-build works workers of the special divisions. Methodology. Application of the special hardwares for providing of safety of the specialized subdivisions in case of occurring of extraordinary situations. Findings. The paper deals with the ensure the safety employees who perform emergency repair and Repair construction works under extreme conditions. The authors propose the construction of helmet with visor, which is protected by patent Ukraine. Models for the calculation of the stress-strain state (SSS) of multilayer protective visor are mathematically justified. The strength calculation technique of monolithic panel protective visor under contact with fragments of building structures is developed. It is agreed with the methods of testing according to ISO fire helmets. The stresses in the monolith safe visor made as cylindrical panel from polycarbonate are determined. This is the first step of pre-strength calculations at impulse impact to the outer surface protective visor as a cylindrical surface. The paper considers the behavior of polycarbonate sheets which are produced with a nominal thickness:h0 = 4, 8 & 12 mm. Originality. For a given external impulse loading are received characteristic functions depending on the location
depth of the stress in a protective layer that operate in the fibers protective visor. It’s have a linear form. The calculation data are given. Comparing the calculation results with the basic provisions of elasticity theory of SSS plates and shells are carried out. Practical value. Ways of modernization helmets of fire-rescue and constructive ways of strengthening is planned.

Author Biographies

А. S. Byelikov, Department of Life Safety, State Higher Education Establishment “Pridneprovsk State Academy of Civil Engineering and Architecture”, 24-A, Chernishevskogo st., Dnipropetrovsk 49600, Ukraine.

Dr. Sc. (Tech.), Prof.

О. А. Sabitova, Department of Life Safety, State Higher Education Establishment “Pridneprovsk State Academy of Civil Engineering and Architecture”, 24-A, Chernishevskogo st., Dnipropetrovsk 49600, Ukraine.

Postgraduate.

А. S. Chaplyhin, Kominternovskiy District Department of the Main Directorate DSNS Ukraine in Kharkiv region, st. Grain 4-а, 61124, Kharkiv, 61046, Ukraine.

Cand. Sc. (Tech.).

N. V. Dolhopolova, The A.N. Podgorny Institute for Mechanical Engineering Problems of the National Academy of Sciences of Ukraine, 2/10 Dm. Pozharsky st.,Kharkiv, 61046, Ukraine.

Cand. Sc. (Tech.).

References

Абаимов, С. Г. Статистическая физика сложных систем. От фракталов до скейлинг-поведения / С. Г. Абаимов. – М.: Либроком, 2012. – 388 с. Abaimov, S. G. Statisticheskaya fizika slozhnyih sistem. Ot fraktalov do skeyling-povedeniya / S. G. Abaimov. – M.: Librokom, 2012. – 388 р.

Беликов, А. С. Обеспечение безопасности работающего в экстремальных условиях / А. С. Беликов, О. А. Сабитова, В. А. Голендер, Н. В. Долгополова, А. С. Чаплыгин // Строительство. Материаловедение. Машиностроение. Сб. научн. тр. №76. – Днепропетровск, ГВУЗ Приднепровская государственная академия строительства и архитектуры, 2014. – С. 50–56. Belikov, A. S. Obespechenie bezopasnosti rabotayuschego v ekstremalnyih usloviyah / A. S. Belikov, O. A. Sabitova, V. A. Нolender, N. V. Dolhopolova, A. S. Chaplyihin //

Building, materials sciences, mechanic engineering: Collection of scientific papers Issue№76 – Dnipropetrovs’k, PSАES, 2014. – рp. 50-56.

Беликов, А. С. Прочностные свойства защитных касок для работы на объектах стройиндустрии / А. С. Беликов, О. А. Сабитова, В. А. Голендер, Н. В. Долгополова, А. С. Чаплыгин // Строительство. Материаловедение. Машиностроение. Сб. научн. тр. №71. – Т. 2. – Днепропетровск, ГВУЗ Приднепровская государственная академия строительства и архитектуры,

– С. 24–28. Belikov, A. S. Prochnostnyie svoystva zaschitnyih kasok dlya rabotyi na ob'ektah stroyindustrii / A. S. Belikov, O. A. Sabitova, V. A. Holender, N. V. Dolhopolova, A. S. Chaplyihin // Building, materials sciences, mechanic engineering: Collection of scientific papers Issue№71 – Dnipropetrovs’k, PSАES, 2013. – рp. 24-28.

Ведерников В.А., Савичева Г.В. О конечных группах, близких к вполне факторизуемым / Дискретная математика. – М.: Наука, 2007. – Т. 19, Вып. 2. – С. 78–84. Vedernikov V. A., Savicheva G. V. O konechnyih gruppah, blizkih k vpolne faktorizuemyim / Diskretnaya matematika. – M.: Nauka, 2007. – T. 19, Vyip. 2. – рр. 78–84.

Інженерна техніка та спеціальні машини для ліквідації надзвичайних ситуацій: навч. посіб. / О. М. Ларін, І. М. Грицина, Н. І. Грицина, А. Я. Калиновський. – Х.: НУЦЗУ, КП «Міськдрук», 2012 – 380 с. Inzhenerna tehnika ta spetsialni mashini dlya likvidatsiyi nadzvichaynih situatsiy: navch. posib. / O. M. LarIn, I. M. Gritsina, N. I. Gritsina, A. Ya. Kalinovskiy. – H.: NUTsZU, KP «Miskdruk», 2012 – 380 p.

Никабадзе, М. У., Улуханян, А. Р. Математическое моделирование упругих тонких тел с одним малым размером с помощью систем ортогональных полиномов // Деп. в ВИНИТИ РАН 21.08.2008. № 723-B2008. 65 с. Nikabadze, M. U., Uluhanyan, A. R. Matematicheskoe modelirovanie uprugih tonkih tel s odnim malyim razmerom s pomoschyu sistem ortogonalnyih polinomov // Dep. v VINITI RAN 21.08.2008. № 723-B2008. 65 р.

Рассказов, А. О. Теория и расчет слоистых ортотропных пластин и оболочек / А. О. Рассказов, И. И. Соколовская. – К.: «Вища школа», 1986. – 191 с. Rasskazov, A. O. Teoriya i raschet sloistyih ortotropnyih plastin i obolochek / A. O. Rasskazov, I. I. Sokolovskaya. – K.: «Vischa shkola», 1986. – 191 р.

Mura T. Micromechanics of Defects in Solids. Martinus Nijhoff, 2002. 494 p.

Senashov, V. I. Сharacterizations of Layer-Finite Groups and Their Extensions // J. of Siberian Federal University. Mathematics and Physics. – 2009. – № 2(3). – рр. 279–287.

Shupikov, Aleksander N. Smetankina, Natalia V. and Sheludko, Hely A. Selection of Optimal Parameters of Multilayer Plats at Nonstationary Loading. Meccanica 33: рр. 553-564, 1998. © 1998 Kluwer Academic Publishers. Printed in the Netherlands.

Shupikov, A. N. Ugrimov, S. V. Vibration of multilayer plates under the effect of impulse loads. Tree-dimensional theory. International Journal of Solids and structures 36 (1999) рр. 3391-3402.

The GAP Group GAP – Groups, Algorithms, and Programming, Version 4.4, 2006 (http://www.gap-system.org).

Ulukhanyan A. R. Dynamic Equations of the Theory of Thin Prismatic Bodies with Expansion in the System of Legendre Polynomials // Mechanics of Solids. 2011. Vol. 46, №3, pр. 467-479.

Ulukhanyan A. R. Representation of Solutions to Equations of Hyperbolic Type// Moscow University Mechanics Bulletin. Vol. 65, №. 2, 2010. pр. 47-50.

Published

2015-04-28

Issue

Section

Creating of high-tech ecological complexes of Ukraine based on the concept of balance (stable) development