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DETERMINING EFFECTIVE LENGTH FOR 40 HM-T STEEL BY USE OF NON-LOCAL LINE METHOD CONCEPT

Abstract

In the paper, the concept of non-local line method is presented and used for determining the effective length for notched elements. Experimental tests and calculations were performed for 40 HM-T (42CrMo4+QT) steel made specimens of two types, i.e. smooth specimens, and notched specimens with notch radius equal to 0.2 mm, 0.5 mm, 0.8 mm, and 1 mm. The performed FEM calculations took into account the multi-linear hardening model and cyclic material properties. The concept of the presented non-local line method bases on finding the position of critical plane and determining the effective length, meant as the fracture process zone. During numerical stress gradient simulations, also the weight function was implemented. It was observed that the effective length increases as the load increases.

Keywords:

weight function, effective length

Details

Issue
Vol. 25 No. 1(97) (2018)
Section
Latest Articles
Published
11-04-2018
DOI:
https://doi.org/10.2478/pomr-2018-0015
Licencja:
Creative Commons License

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Open Access License

This journal provides immediate open access to its content under the Creative Commons BY 4.0 license. Authors who publish with this journal retain all copyrights and agree to the terms of the CC BY 4.0 license.

 

Authors

  • Grzegorz Robak

    Opole University of Technology
  • Daniel Krzyżak

    Opole University of Technology
  • Artur Cichański

    UTP University of Science and Technology

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