Global sensitivity analysis of fractional-order viscoelasticity models

Paul R. Miles; Graham T. Pash; Ralph C. Smith; William S. Oates

doi:10.1117/12.2514160

29 March 2019 Global sensitivity analysis of fractional-order viscoelasticity models

Paul R. Miles, Graham T. Pash, Ralph C. Smith, William S. Oates

Proceedings Volume 10968, Behavior and Mechanics of Multifunctional Materials XIII; 1096806 (2019) https://doi.org/10.1117/12.2514160
Event: SPIE Smart Structures + Nondestructive Evaluation, 2019, Denver, Colorado, United States

Abstract

In this paper, we investigate hyperelastic and viscoelastic model parameters using Global Sensitivity Analysis (GSA). These models are used to characterize the physical response of many soft-elastomers, which are used in a wide variety of smart material applications. Recent research has shown the effectiveness of using fractionalorder calculus operators in modeling the viscoelastic response. The GSA is performed using parameter subset selection (PSS), which quantifies the relative parameter contributions to the linear and nonlinear, fractionalorder viscoelastic models. Calibration has been performed to quantify the model parameter uncertainty; however, this analysis has led to questions regarding parameter sensitivity and whether or not the parameters can be uniquely identified given the available data. By performing GSA we can determine which parameters are most influential in the model, and fix non-influential parameters at a nominal value. The model calibration can then be performed to quantify the uncertainty of the influential parameters.

Citation Download Citation

Paul R. Miles, Graham T. Pash, Ralph C. Smith, and William S. Oates "Global sensitivity analysis of fractional-order viscoelasticity models", Proc. SPIE 10968, Behavior and Mechanics of Multifunctional Materials XIII, 1096806 (29 March 2019); https://doi.org/10.1117/12.2514160

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available