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Search Publications by Mark Iadicola

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Displaying 1 - 25 of 42

Influence of Drawbeads in Deep Drawing of Plane-Strain Channel Sections

October 12, 2021
D E. Green, T B. Stoughton, Thomas H. Gnaupel-Herold, Mark Iadicola, Timothy J. Foecke
The Numisheet 2005 Benchmark 3 consisted of forming four different automotive sheet materials in a two-stage process. The first stage consisted of forming channel sections in an industrial-scale channel draw die in which material flow is controlled by

Two Stage Forming: Experimental and FE Analysis

October 12, 2021
M C. Oliveira, A J. Baptista, J L. Alves, L F. Menezes, D E. Green, Thomas H. Gnaupel-Herold, Mark Iadicola, Timothy J. Foecke, T B. Stoughton
One of the present challenges in sheet metal forming is to simulate sequential production stages, from the initial blank sheet to the final part ready for assembly. In this context, it is fundamental to evaluate the forming characteristics of the materials

2020 Numisheet benchmark study uniaxial tensile tests summary

April 29, 2020
Evan Rust, William E. Luecke, Mark Iadicola
This report describes the test equipment, process, analysis, and data file formats for the 2020 Numisheet benchmark study tensile testing of the four materials associated with the Numisheet conference benchmarks. The four materials include two steel alloys

Insights into Cruciform Sample Design

January 30, 2017
Adam A. Creuziger, Mark A. Iadicola, Timothy J. Foecke, Evan Rust, Dilip K. Banerjee
Four different cruciform sample designs, based on the work of Abu-Farha et al, were studied in this paper. The original design of Abu-Farha was validated at room temperature for a thicker sample, and two modified sample geometries that would permit thinner

Crystal Plasticity Analysis of Constitutive Behavior of 5754 Aluminum Sheet

June 30, 2016
Minh-Son Pham, Anthony D. Rollett, Adam Abel Creuziger, Mark Iadicola, Timothy J. Foecke
Crystal plasticity constitutive equations for the multi-axial stress-strain behavior of aluminum alloy 5754 sheets have been developed. A Taylor model, a self-consistent visco-plastic model and an N-site model based on the Fast Fourier Transform were used

FEA parameter verification for strain localization experiments

June 6, 2016
Mark A. Iadicola, Dilip K. Banerjee, Adam A. Creuziger
Multi-axial specimen geometry optimization through finite element analysis requires robust models that incorporate the critical physics of the experiment as well as a sufficiently robust constitutive law. This can be difficult even at low nominal strain

Thermally-activated constitutive model including dislocation interactions, aging and recovery for strain path dependence of solid solution strengthened alloys: Application to AA5754-O

December 1, 2015
Minh-Son Pham, Mark A. Iadicola, Adam A. Creuziger, Lin Hu, Anthony D. Rollett
A thermally-activated constitutive model is developed based on dislocation interactions, crystallographic orientations and microstructural evolution to describe the elasto-plastic stress-strain behavior during multi-axial loading. The aim is to contribute

Constitutive Modeling based on Evolutionary Multi-junctions of Dislocations

May 7, 2014
Minh-Son Pham, Adam A. Creuziger, Mark A. Iadicola, Timothy J. Foecke, A.D. Rollett
A latent hardening model based on the binary junction-induced hardening can effectively describe the plastic anisotropic response. However, this approach still has some descriptive and predictive limitations. Recent findings show that binary junctions

Advanced Biaxial Cruciform Testing at the NIST Center for Automotive Lightweighting

January 1, 2014
Mark A. Iadicola, Adam A. Creuziger, Timothy J. Foecke
Modeling of sheet metal forming operations requires mechanical properties data at very large tensile strains and various biaxial strain paths. Typically these data are developed along strain ratio paths that are linear and monotonic, but actual forming