Dynamic response of a plate laying on elastic base during the impact of a conical indenter

Abstract

The article presents an analytical and numerical study of a dynamic conical indentation during impact process. The circular plate laying on the elastic base is subjected to impact load by the conical indenter. Local deformations in imprint zone are considered as elastic-plastic and general plate deformations are only elastic. According to Timoshenko method, the general plate displacement is considered as the sum of the elastic-plastic displacement of the indenter and the elastic displacement of the plate at the impact point. The solution is constructed with Fourier transforms and the Green function of the dynamic process is obtained. The numerical study of impact indentation is received by FEM method. The dependences of displacements, velocities, and accelerations of the plate on time is obtained during impact. The experimental data obtained with the special device is compared with the results of the numerical analysis. The method of an assessment of the mechanical characteristics of steel is proposed on the basis of the research. Analysis of the dynamic response and non-stationary effects on structural elements is carried out on the base of the calculated impact process.

Analysis of neural network results based on experimental data during indentation

“…Analysis of literature sources in this area [9,10,11,12,13,14,15], allows us to conclude that it is advisable to use a neural network algorithm to determine the properties of materials in the process of shock indentation. The aim of the study is static processing of data obtained during the experiment, investigation of the dependencies of the material characteristics of metals, selection of optimal parameters of the neural network.…”