Examining material constitutive response under dynamic compression and large plastic strains using in situ imaging of hole closure

This work presents a novel sensitivity approach that quantifies sensitivity to regimes of a model’s state variables rather than constitutive model parameters. This Physical Regime Sensitivity (PRS) determines which regimes of a model’s independent variables have the biggest influence on an experiment or application. PRS analysis is demonstrated on a strength model used in the simulation of a copper Taylor cylinder. In a series of simulations, the strength model was perturbed sequentially in local regimes of plastic strain, plastic strain rate, temperature and pressure, and then the prediction of cylinder shape was compared to unperturbed calculations. Results show, for example, that the deformed length of the cylinder was most sensitive to strength at a strain rate of 1.0 × 104/sec., but the deformed footprint radius was most sensitive to strength at a strain rate of about 4.0 × 104/sec. Compared to current histogram approaches, PRS can be used to design or interpret integrated experiments by identifying not just which regimes are accessed somewhere in the experiment but the causality question of which regimes actually affect the measured data. PRS should allow one to focus experimental and modeling efforts where they are most needed and to better interpret experiments.

show abstract

Physical Regime Sensitivity

Prime

Merson

Chen

2023

J. dynamic behavior mater.

View full text Add to dashboard Cite

show abstract

Shear localization as a damage mechanism in pore collapse under shock compression

Lovinger,

Kositski

2024

International Journal of Impact Engineering

View full text Add to dashboard Cite

Modeling shock-induced void collapse in single-crystal Ta systems at the mesoscales

Galitskiy

Mishra

Dongare

2023

International Journal of Plasticity

View full text Add to dashboard Cite

scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.

Contact Info

customersupport@researchsolutions.com

10624 S. Eastern Ave., Ste. A-614

Henderson, NV 89052, USA

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

Blog Terms and Conditions API Terms Privacy Policy Contact Cookie Preferences Do Not Sell or Share My Personal Information

Made with 💙 for researchers

Part of the Research Solutions Family.

Examining material constitutive response under dynamic compression and large plastic strains using in situ imaging of hole closure

Cited by 9 publications

References 20 publications

Physical Regime Sensitivity

Physical Regime Sensitivity

Shear localization as a damage mechanism in pore collapse under shock compression

Modeling shock-induced void collapse in single-crystal Ta systems at the mesoscales

Contact Info

Product

Resources

About