Characterization and Modeling of Aluminum Extrusion Damage Under Crash Loading

A Shear Compression Disk Specimen with Controlled Stress Triaxiality under Quasi-Static Loading

“…4. A "ductile failure" [1] criterion is added to the numerical analysis and the resulting numerical d-P curves are compared to the experimental ones. The value of the equivalent plastic strain which, when used with the "ductile failure" criterion, causes fracture at the same point observed in the experimental d-P curve is identified as the fracture strain.…”

“…These requirements pose a great challenge for a sophisticated characterization of plasticity and failure of materials under complex loading. In particular, most of "high performance" applications expose the materials to extreme conditions requiring an accurate material characterization taking into account the stress triaxiality and strain rate effects (e.g., [1]). It is well accepted that the common criteria for yield (e.g., Tresca or von-Mises) and ductile fracture (e.g., Gurson), which are all used to transpose the one-dimensional experimental results to triaxial conditions, are only rough approximations for material plasticity and fracture [2].…”

“…These experiments are used to extract a variety of properties including plastic behavior and fracture strain. Some of the specimens are used also under dynamic loading [1,21]. An authoritative review of results of these investigations can be found in Lewandowski and Lowhaphandu [22].…”

Parameters identification in strain-rate and thermal sensitive visco-plastic material model for an alumina dispersion strengthened copper

“…One of the most important works on this topic is [1]. A specific treatment was developed according to the choice of the material model [2,3], the type of the experimental tests [4,5], the FEM code for the numerical solution and the algorithm on which the optimization was based on [6,7]. A lot of these works are related with the solution of problems in which the dynamic component could be relevant.…”

Analysis of circular bond-type anchorages for prestressing composite rods under quasi-static, fatigue and time-dependent loads

“…This concept was first developed by Gurson [46], where a yield criterion and flow rule for a material containing a given volume fraction of voids was proposed and, later, extended by Tvergaard and Needleman [47] who included void nucleation and growth. Efforts were made to extend this approach in order to model the continuum damage response with the finite element method (FEM) [48][49][50][51]. Recently, Hua et al [52] proposed a continuum damage model to undertake progressive damage modelling in adhesive joint systems.…”