Modification and evaluation of a FRF-based model updating method for identification of viscoelastic constitutive models for a nonlinear polyurethane adhesive in a bonded joint

• Published in: International journal of adhesion and adhesives Vol. 74; pp. 181 - 193
• Main Authors: Najib, Mehdi F., Nobari, Ali S., Nikbin, Kamran
• Format: Journal Article
• Language: English
• Published: Kidlington Elsevier Ltd 01.04.2017; Elsevier BV
• Subjects: Adhesion tests; Adhesive bonding; Adhesive joints; Adhesives; Bonded joints; Constitutive models; Dynamic mechanical properties; Elastic modulus (D); Finite element method; Frequency response functions; High frequencies; Loss modulus; Mathematical models; Mechanical properties; Mechanical properties of adhesives (D); Model updating; Polyurethane; Polyurethane (A); Polyurethane resins; Random excitation; Sensitivity analysis; Stiffness; Storage modulus; Viscoelasticity; Viscoelasticity (D); ACC; Mechanical properties of adhesives (D); FRAC; IEM; Elastic modulus (D); SCC; OELF; Viscoelasticity (D); EMA; RFM; FRF; SLS; Polyurethane (A); FE

In this study, a Frequency Response Function (FRF) -based model updating method, was modified for the purpose of the identification of viscoelastic constitutive models. A steel beam, bonded to a heavy rigid steel block by a layer of Sikaflex-252 polyurethane adhesive, was employed as the test setup....