Abstract
The aluminum alloys (AA) are among the most utilized materials in engineering structures, which induces the need for careful investigation, testing, and possibilities for accurate simulation of the structure’s response. AA 5083-H111 specimens were used to investigate the possibility of employing a Phase-Field Damage Model (PFDM) for the simulation of AA structures’ behavior. The specimens were mechanically tested by uniaxial tensile loading tests. Based on the obtained results, the PFDM was employed with a von Mises plasticity model, implemented in the Finite Element Method software. The plasticity model was extended by modification of the hardening function defined in two-intervals: a linear hardening and a Simo-type hardening. An excellent superposition of the simulation and experimental force-displacement response was recorded. These findings suggest that the AA structures’ response can be successfully simulated in the elastic-plastic domain, as well as its failure by damage being controlled.
Highlights
Steel is the most represented metal material in engineering structures due to its high strength, Aluminum Alloys (AA) are strong materials that are opening up possibilities in the engineering design of advanced structures
Lee and Basaran, in [7], offered a review of degradation, damage evolution, and fatigue models for various metals. They discussed various approaches, including, among others, a possibility to simulate the behavior of AA5083 by using the Phase-Field Damage Model (PFDM)
As can be observed in this short literature overview, AA5083 is very interesting to researchers, and many publications have explored its behavior by experimental testing or Finite Element Method (FEM) simulations
Summary
Steel is the most represented metal material in engineering structures due to its high strength, Aluminum Alloys (AA) are strong materials that are opening up possibilities in the engineering design of advanced structures. A few years later, Zhou et al, in [5], investigated plastic behavior and a ductile fracture of AA5083 by experimental tests and FEM analyses They used a specific I1–J2–J3 plasticity model to simulate the plastic response. It was based on non-associative plasticity equations for simulation of the anisotropic behavior of AA5083 They investigated the AA5083 material by a uniaxial tensile test. In this article, the necessary modifications will be presented along with the theoretical background to show the possibility of using a PFDM coupled with von Mises plasticity, with a modification of the hardening function for the AA5083 behavior simulation. The experimental testing results and simulation results obtained by the proposed coupling of the PFDM and the von Mises plasticity phenomenological (macro) model and modified twointervals hardening function were compared, and the verification was successfully done. In the Nomenclature section, the nomenclature of the variables used in the algorithms is given
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