Characterization of the Large Deformation Plasticity of Pure Lithium Foil

2020 ◽  
Author(s):  
Juner Zhu
Keyword(s):  
Large Deformation ◽  
Deformation Plasticity

scholarly journals Large Deformation Characterization of Porcine Thoracic Aortas: Inverse Modeling Fitting of Uniaxial and Biaxial Tests

2015 ◽  
Vol 08 (10) ◽  
pp. 717-732 ◽  
Author(s):  
Jorge O. Virues Delgadillo ◽  
Sebastien Delorme ◽  
Francis Thibault ◽  
Robert DiRaddo ◽  
Savvas G. Hatzikiriakos
Keyword(s):  
Large Deformation ◽  
Inverse Modeling ◽  
Biaxial Tests

Characterization of volume strain at large deformation under uniaxial tension in high-density polyethylene

Polymer ◽  
2006 ◽  
Vol 47 (12) ◽  
pp. 4387-4399 ◽  
Author(s):  
Frederic Addiego ◽  
Abdesselam Dahoun ◽  
Christian G'Sell ◽  
Jean-Marie Hiver
Keyword(s):  
Large Deformation ◽  
Uniaxial Tension ◽  
High Density Polyethylene ◽  
High Density ◽  
Volume Strain

A Large Deformation Plasticity Model With Rate Sensitivity and Thermal Softening

1984 ◽  
Vol 106 (4) ◽  
pp. 388-392
Author(s):  
D. W. Nicholson ◽  
K. C. Kiddy
Keyword(s):  
Large Deformation ◽  
Shear Banding ◽  
Small Deformation ◽  
Rate Sensitivity ◽  
Thermal Softening ◽  
Dynamic Loads ◽  
Extended Model ◽  
Adiabatic Shear Banding ◽  
Deformation Plasticity ◽  
Applied Stresses

In this paper, a previously published small deformation constitutive model with rate sensitive plasticity and thermal softening is extended to large deformation. The extended model appears suitable for describing a deleterious thermoplastic process manifested by adiabatic shear banding in materials such as titanium under severe dynamic loads. The nature of the instability admitted by the model is described. Also, calculations are reported on the rapid extension of a titanium strip. For applied stresses several times the yield stress, a deleterious temperature is attained in times of the order of 10−2 s.

Conservative Formulation of Large Deformation Plasticity

1993 ◽  
Vol 46 (12) ◽  
pp. 519-526 ◽  
Author(s):  
James G. Glimm ◽  
Bradley J. Plohr ◽  
David H. Sharp
Keyword(s):  
High Resolution ◽  
Shear Band ◽  
Large Deformation ◽  
Large Deformations ◽  
Shear Bands ◽  
Shock Capturing ◽  
Jump Discontinuity ◽  
Governing Equations ◽  
Conservative Form ◽  
Deformation Plasticity

We explain several ideas which may, either singly or in combination, help achieve high resolution in simulations of large-deformation plasticity. Because of the large deformations, we work in the Eulerian picture. The governing equations are written in a fully conservative form, which are correct for discontinuous as well as continuous solutions. Models of shear bands are discussed. These models describe the internal dynamics of a developed shear band in terms of time-asymptotic states; in other words, the smooth internal structure is replaced by a jump discontinuity, and the shear band evolution is determined by jump relations. This analysis is useful for high resolution numerical methods, including both shock capturing and shock tracking schemes, as well as for the understanding and validation of computations, independently of the underlying method. Preliminary computations, which illustrate the feasibility of these ideas, are presented.

Characterization of Aluminum Honeycomb Material Failure in Large Deformation Compression, Shear, and Tearing

2002 ◽  
Vol 124 (4) ◽  
pp. 412-420 ◽  
Author(s):  
Qing Zhou ◽  
Robert R. Mayer
Keyword(s):  
Large Deformation ◽  
Material Characterization ◽  
Dynamic Compression ◽  
Crash Test ◽  
Characterization Methods ◽  
Aluminum Honeycomb ◽  
Principal Directions ◽  
Honeycomb Material ◽  
Static Shear

Large deformation failures of aluminum honeycomb materials in dynamic compression, static shear and static tearing are characterized in this comprehensive experimental study. Two low density honeycomb materials that make up the Offset Deformable Barrier (ODB) used in vehicle crash test were tested. Material characterization methods, including one for studying material tearing, have been developed. The honeycomb material data under large deformation, including complete curves of compression and shear stress-strain relations in the three principal directions, are presented and analyzed. Honeycomb material tearing strength, defined as tearing force per unit tearing length, is introduced. Strain-rate dependence of honeycomb materials under dynamic loading is investigated. Local failure mechanisms of honeycombs in compression, shear, and indentation punch tests and their relations with the bulk properties of the materials are studied in detail. The results of this research may be used to improve the material fidelity of finite element simulations of the ODB.

Large-deformation plasticity and fracture behavior of pure lithium under various stress states

2021 ◽  
Vol 208 ◽  
pp. 116730
Author(s):  
Tobias Sedlatschek ◽  
Junhe Lian ◽  
Wei Li ◽  
Menglei Jiang ◽  
Tomasz Wierzbicki ◽  
...  
Keyword(s):  
Large Deformation ◽  
Fracture Behavior ◽  
Deformation Plasticity ◽  
Stress States
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