<abstract xmlns="http://www.w3.org/1999/xhtml"><p>This paper presents the dynamic mechanical properties of austenitic steel with improved durability, which is used in the construction of hulls of minesweepers, mine destroyers, submarines and other naval vessels. Dynamic tensile tests performed on the steel samples using a rotary hammer with a strain rate of up to 1000 s-1 allowed determination of elastic-plastic characteristics of the material in the form of a polynomial of Johnson-Cook constitutive model, taking into account the influence of strain rate and temperature. A characteristic of this type is utilized in numerical calculations in the CAE software. The obtained characteristics were experimentally verified by bending tests of flat samples with a drop-weight type impact hammer. Simultaneously numerical calculations were performed in order to compare the deformation state.</p></abstract>

This paper presents the dynamic mechanical properties of austenitic steel with improved durability, which is used in the construction of hulls of minesweepers, mine destroyers, submarines and other naval vessels. Dynamic tensile tests performed on the steel samples using a rotary hammer with a strain rate of up to 1000 s-1 allowed determination of elastic-plastic characteristics of the material in the form of a polynomial of Johnson-Cook constitutive model, taking into account the influence of strain rate and temperature. A characteristic of this type is utilized in numerical calculations in the CAE software. The obtained characteristics were experimentally verified by bending tests of flat samples with a drop-weight type impact hammer. Simultaneously numerical calculations were performed in order to compare the deformation state.

Determination of Dynamic Characteristics of Austenitic Steel to be Utilized in Fem Simulation and its Verification

Polish Naval Academy, Faculty of Mechanical and Electrical Engineering

Maritime Technical Journal

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

This paper presents the dynamic mechanical properties of austenitic steel with improved durability, which is used in the construction of hulls of minesweepers,...

Determination of Dynamic Characteristics of Austenitic Steel to be Utilized in Fem Simulation and its Verification

Publié en ligne: 29 juin 2018

Pages: 35 - 42

Reçu: 27 mars 2018

Accepté: 26 juin 2018

DOI: https://doi.org/10.2478/sjpna-2018-0011

Mots clés
dynamic characteristics of material, drop-weight type impact hammer, rotary hammer, Johnson-Cook constitutive model

© 2018 Bogdan Szturomski et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Determination of Dynamic Characteristics of Austenitic Steel to be Utilized in Fem Simulation and its Verification

Publié en ligne: 29 juin 2018

Pages: 35 - 42

Reçu: 27 mars 2018

Accepté: 26 juin 2018

DOI: https://doi.org/10.2478/sjpna-2018-0011

Mots clésdynamic characteristics of material, drop-weight type impact hammer, rotary hammer, Johnson-Cook constitutive model

© 2018 Bogdan Szturomski et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Mots clés
dynamic characteristics of material, drop-weight type impact hammer, rotary hammer, Johnson-Cook constitutive model