Anglin et al. Integrating Materials and Manufacturing Innovation (2016) 5:11 DOI 10.1186/s40192-016-0053-4
Integrating Materials and Manufacturing Innovation
RESEARCH
Open Access
Developing constitutive model parameters via a multi-scale approach B. S. Anglin1*, B. T. Gockel2,3 and A. D. Rollett3 * Correspondence:
[email protected] 1 Materials Response and Design Branch, US Army Research Laboratory, 4600 Deer Creek Loop, Aberdeen Proving Ground, MD 21005, USA Full list of author information is available at the end of the article
Abstract Computing the mechanical response of materials requires accurate constitutive descriptions, especially their plastic behavior. Furthermore, the ability of a model to be used as a predictive, rather than a descriptive, tool motivates the development of physically based constitutive models. This work investigates combining a homogenized viscoplastic self-consistent (VPSC) approach to reduce the development time for a high-resolution viscoplastic model based on the fast Fourier transform (FFT). An optimization scheme based on a least-squares algorithm is presented. The constitutive responses of copper, interstitial-free steel, and pearlite are investigated, and the model parameters are presented. Optimized parameters from the low-fidelity model provide close agreement (
