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Information × Registration Number 0221U107199, 0121U112251 , R & D reports Title Experimental-computational study of the high-strength materials behavior in static and dynamic punching of thin plates, taking into account the strain rate popup.stage_title Head Kravchuk Roman V., Registration Date 29-12-2021 Organization GS Pisarenko Institute of Strength Problems of the National Academy of Sciences of Ukraine popup.description2 Based on the analysis of literature sources, the expediency of researching the behavior of high-strength materials not only under static but also dynamic punching is shown, and approaches to the numerical simulation of such processes are determined. Computational models have been built to simulate the behavior of a high-strength material Armox 500T during static and dynamic punching tests. The Johnson-Cook material model was used. Calculations were made for three types of punches: hemispherical, flat and conical. A series of calculations was carried out using FE models with different sizes of finite elements - 50 μm, 100 μm and 200 μm to analyze the convergence of the results obtained. Based on the results of the calculations, it was found that with an increase in the speed of punch movement from 0.05 m/s to 1 m/s, the maximum load and punching depth before destruction increase when all types of punches are used. Test tests for static punching of plate specimens made of high-strength steel Armox 500T have been carried out. The obtained results are comparable with the results of numerical calculations. It is shown that additional experimental and computational studies are required to refine the parameters of the Johnson-Cook material model.  Product Description popup.authors popup.nrat_date 2022-03-09 Close