Structural identifiability of parameters of Anand material model

被引:0
作者
Rojicek, Jaroslav [1 ]
Cienciala, Jakub [1 ]
Fusek, Martin [1 ]
机构
[1] Tech Univ Ostrava, Fac Mech Engn, VSB, 17 Listopadu 2172-15, Ostrava 70800, Czech Republic
关键词
Tension test; Finite element method updating; Anand material model; Calibration; Validation; INSTRUMENTED INDENTATION; CONSTITUTIVE MODEL; PLASTIC PROPERTIES; METALS; SIMULATION;
D O I
10.1038/s41598-025-89360-y
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
This article explores the structural identifiability of parameters within non-linear physical models, focussing specifically on the Anand material model. The proposed procedure is structured in two key steps: first, a local analysis identifies the most suitable parameters for testing. Subsequently, these selected parameters, along with their admissible value intervals, are evaluated for global structural dependence. Our innovative numerical approach systematically reduces the parameter count by substituting selected parameters with frozen values (constants). The study employs simulations of the finite element method of a simplified tensile test, utilising the Anand material model. The independent parameters identified through this method are then validated against a tensile test dataset. The validation results indicate a high probability that the use of a reduced parameter set yields unique values for the Anand model parameters in the tensile tests, underscoring the efficacy of our approach.
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页数:23
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