Development of a Damage-dependent Modified Material Model for Enhanced Description of Transient Material Behavior
Year: 2025
Type: article
Abstract: The growing popularity of electromobility is opening up new fields of application for various materials. For example, the aluminum alloy EN AW-1050A H24 is now of greater interest due to its good conductive properties. As a result, the material behavior of EN AW-1050A H24 must be accurately understood and described to properly assess fatigue life. To describe the cyclic material behavior of EN AW-1050A H24 special consideration should be given to the non-stabilizing cyclic softening. That leads to a significant mismatch of the experimental and simulated hysteresis loops using the Chaboche combined hardening model. In this study a new, Damage-dependent Modified Material Model is developed to fix this mismatch by calibrating the kinematic hardening parameters on experimental data in dependence to damage. As a result, the simulated hysteresis loops can precisely map the experimentally determined cyclic material behavior even without cyclic stabilization.
Source: Procedia Structural Integrity
Authors: T. Korschinsky, B. Möller, M. Kiel, M. Hecht
Language: English
Subfield: Mechanics of Materials
Field: Engineering
Domain: Physical Sciences
Open Access status: diamond
OpenAlex ID: W4412436503