EPJ Web Conf.
Volume 250, 2021DYMAT 2021 - 13th International Conference on the Mechanical and Physical Behaviour of Materials under Dynamic Loading
|Number of page(s)||6|
|Section||Modelling & Numerical Simulation|
|Published online||09 September 2021|
The research of destruction of functionally-graded materials subjected to impact loading
Tomsk State University, Scientific Research Institute Applied of Mathematics and Mechanics, 36, Lenin Avenue, Tomsk, 634050, Russia
2 Tomsk Polytechnic University, Division for Oil and Gas Engineering, 30, Lenin Avenue, Tomsk, 634050, Russia
Published online: 9 September 2021
A numerical analysis on impact response of multilayer plates and plates with a gradient substrate against steel projectile perforation was made. The shear strength was varied in the substrate within a certain range. The behavior of bodies is modeled by an elastic-plastic, porous, compressible medium, taking into account shock-wave phenomena and fragmentary fracture of materials. A numerical lagrangian method with modified node splitting algorithms was used. Good agreement between the computed and experimental results was obtained. During perforation, pattern of destruction of all plates has been investigated. The results show impact resistance of plates with a gradient substrate was greater than the homogeneous steel one, but less than multilayer ones. However, the impact resistance of multilayer plates is explained by the pinching effect of the layers.
© The Authors, published by EDP Sciences, 2021
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