PSI - Issue 42

^ĐŝĞŶĐĞ ŝƌĞĐƚ Available online at www.sciencedirect.com ^ĐŝĞŶĐĞ ŝƌĞĐƚ Structural Integrity Procedia 00 (2021) 000 – 000

www.elsevier.com/locate/procedia

Available online at www.sciencedirect.com Structural Integrity Procedia 00 (2021) 000 – 000

www.elsevier.com/locate/procedia

ScienceDirect

Procedia Structural Integrity 42 (2022) 1153–1158

© 2022 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the scientific committee of the 23 European Conference on Fracture – ECF23 © 2022 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of Pedro Miguel Guimaraes Pires Moreira Abstract Trabecular bo e tissue with its complicated microstructural morphology can exhibit co plex and random fracture patterns. This paper f cus s on the effect of morphology of b ne tissue on processes of its deform ti n and f acture. For this purpose, three dime sional unit cells of trabecular bone tissu were generated based n th scans of hu an distal tibial bone obtained with high resolution periph ral quantita ive computed tomography (HR-pQCT). Mechanical behavior of porous structure of trabecular bone was investigated under conditions of applied tensile and compressive loads employing a model of degradation of elastic properties, numerically implemented with finite-element analysis. The calculations were performed in Simulia Abaqus using the UMAT custom subroutine. © 2022 The Autho s. Publ shed by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) P er-review under responsibility of P dro Miguel Guimaraes Pires Moreira 23 European Conference on Fracture - ECF23 Effect of microstructure on trabecular-bone fracture: numerical analysis Aleksandr Shalimov a , Ekaterina Smotrova a,b , Mikhail Tashkinov a , Vadim V. Silberschmidt b * a Laboratory of Mechanics of Biocompatible Materials and Devices, Perm National Research Polytechnic University, Perm, Russia b Wolfson School of Mechanical, Electrical and Manufacturing Engineering, Loughborough University, Loughborough, UK Abstract Trabecular bone tissue with its complicated microstructural morphology can exhibit complex and random fracture patterns. This paper focuses on the effect of morphology of bone tissue on processes of its deformation and fracture. For this purpose, three dimensional unit cells of trabecular bone tissue were generated based on the scans of human distal tibial bone obtained with high resolution peripheral quantitative computed tomography (HR-pQCT). Mechanical behavior of porous structure of trabecular bone was investigated under conditions of applied tensile and compressive loads employing a model of degradation of elastic properties, numerically implemented with finite-element analysis. The calculations were performed in Simulia Abaqus using the UMAT custom subroutine. 23 European Conference on Fracture - ECF23 Effect of microstructure on trabecular-bone fracture: numerical analysis Aleksandr Shalimov a , Ekaterina Smotrova a,b , Mikhail Tashkinov a , Vadim V. Silberschmidt b * a Laboratory of Mechanics of Biocompatible Materials and Devices, Perm National Research Polytechnic University, Perm, Russia b Wolfson School of Mechanical, Electrical and Manufacturing Engineering, Loughborough University, Loughborough, UK Keywords: trabecular bone; HR-pQCT; mechanical competence; strength; fracture, degradation of properties

Keywords: trabecular bone; HR-pQCT; mechanical competence; strength; fracture, degradation of properties

* Corresponding author. E-mail address: V.Silberschmidt@lboro.ac.uk * Corresponding author. E mail address: V.Silberschmidt@lboro.ac.uk

2452-3216 © 2022 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of Pedro Miguel Guimaraes Pires Moreira 2452-3216 © 2022 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of Pedro Miguel Guimaraes Pires Moreira

2452-3216 © 2022 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the scientific committee of the 23 European Conference on Fracture – ECF23 10.1016/j.prostr.2022.12.147