Open AccessESTIMATION OF THE RESISTANCE OF A THREE-LAYERED STRUCTURE WITH A PYRAMID DISCONTINUOUS FILLER TO DYNAMIC STRESS USING THE FINITE ELEMENT METHOD
Author(s) -
О. М. Устарханов,
H. M. Musеlеmov,
M. S. Abakarov,
М. С. Алибеков
Publication year - 2019
Publication title -
vestnik dagestanskogo gosudarstvennogo tehničeskogo universiteta. tehničeskie nauki
Language(s) - English
Resource type - Journals
eISSN - 2542-095X
pISSN - 2073-6185
DOI - 10.21822/2073-6185-2019-46-3-167-176
Subject(s) - finite element method , pyramid (geometry) , filler (materials) , materials science , stress (linguistics) , composite material , structural engineering , computer science , mathematics , engineering , geometry , linguistics , philosophy
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%.