ESTIMATION OF THE RESISTANCE OF A THREE-LAYERED STRUCTURE WITH A PYRAMID DISCONTINUOUS FILLER TO DYNAMIC STRESS USING THE FINITE ELEMENT METHOD
https://doi.org/10.21822/2073-6185-2019-46-3-167-176
Abstract
Objectives. In this research, we set out to explore the possibility of increasing the resistance of three-layered panels with a pyramid filler filled with fibrous material to dynamic loads. Although issues associated with dynamic impact, penetration of solid bodies and breaking of solid barriers have always been of interest, particularly in military affairs, they are increasingly attracting the attention of researchers investigating various industrial problems.
Method. A calculation was performed using the finite element method (FEM), which is widely used in various areas including construction. The possibility of calculating the movement of a solid body in fibrous material using the FEM, namely using the LIRA-SAPR software, was considered.
Results. From the constructed models, it can be seen how the striker moves inside the fibrous material. Therefore, using the SC LIRA-SAPR allows the work of the filler to be assessed while a solid body moves inside it. The results of the calculation of striker movement in fibrous material depending on the speed of the body (striker) and the density of the filler (fibre) are shown in figures.
Conclusion. The conducted numerical studies showed that a discrepancy between the calculation results for a three-layered structure under dynamic loads using the FEM and analytical dependencies was about 10%.
Supporting agencies: The work was carried out with financial support from the President of the Russian Federation (Grant MK-6112.2018.8).
About the Authors
O. M. Ustarkhanov
Daghestan State Technical University
Russian Federation
Russian Federation
Dr. Sci. (Technical), Prof., Department of Construction Structures and Hydraulic Engineering Structures
70 I. Shamil Ave., Makhachkala 367026
H. M. Muselemov
Daghestan State Technical University
Russian Federation
Russian Federation
Cand. Sci. (Technical), Assoc. Prof., Department of Construction Structures and Hydraulic Engineering Structures
70 I. Shamil Ave., Makhachkala 367026
M. S. Abakarov
Daghestan State Technical University
Russian Federation
Russian Federation
Deputy Head of the Office of the Federal Register for the Republic of Daghestan
70 I. Shamil Ave., Makhachkala 367026
M. S. Alibekov
Daghestan State Technical University
Russian Federation
Russian Federation
Assistant, Department of Construction Structures and Hydraulic Engineering Structures
70 I. Shamil Ave., Makhachkala 367026
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Review
For citations:
Ustarkhanov O.M., Muselemov H.M., Abakarov M.S., Alibekov M.S. ESTIMATION OF THE RESISTANCE OF A THREE-LAYERED STRUCTURE WITH A PYRAMID DISCONTINUOUS FILLER TO DYNAMIC STRESS USING THE FINITE ELEMENT METHOD. Herald of Dagestan State Technical University. Technical Sciences. 2019;46(3):167-176. (In Russ.) https://doi.org/10.21822/2073-6185-2019-46-3-167-176
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