Naslov
Numerical Modelling of Damage Accumulation in Cortical Bone Tissue

Autori
Lovrenić-Jugović, Martina ; Tonković, Zdenko ; Skozrit, Ivica

Izvornik
Tehnicki Vjesnik-Technical Gazette (1330-3651) 19 (2012), 1; 83-91

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
cortical bone; creep; damage; finite element modelling; recovery; viscoelasticity

Sažetak
This paper describes the numerical implementation and validation of a constitutive model for simulating the mechanical behaviour of human cortical bone tissue. The model incorporates linear viscoelasticity coupled with damage to predict the creep and creep-recovery responses, respectively. The material parameters are determined by fitting the experimental results reported in the published literature. A computational algorithm for the integration of the proposed constitutive model at the material point level is derived. The derived algorithm in conjunction with the tangent stiffness matrix is implemented in the finite element code ABAQUS. The model predictions are found to be in good agreement with the experimental data presented in literature.

Izvorni jezik
Engleski

Znanstvena područja
Strojarstvo

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