Journal of the Mechanical Behavior of Biomedical Materials This is an RSS file. You can use it to subscribe to this data in your favourite RSS reader or to display this data on your own website or blog.

Size effect in polymeric lattice materials with size-dependent Poisson's ratio caused by Cosserat elasticity
J Mech Behav Biomed Mater. 2024 Apr 3;154:106532. doi: 10.1016/j.jmbbm.2024.106532. Online ahead of print.ABSTRACTPolymeric lattice materials with micro/nano-structures are attractive for applications in a wide range of bioengineering systems. Resent experimental results show that elastic constitutive law of polymer materials is in line with the Cosserat elasticity. In this work, a Cosserat continuum spectral element method is employed to explore the size-dependent mechanical performance of polymer polymeric lattice with horseshoe microstructures, efficiently. The mechanical performance predicted by the proposed method agr...
Source: Journal of the Mechanical Behavior of Biomedical Materials - April 4, 2024 Category: Materials Science Authors: Hongxia Li Xuewen Guo Bao Zhu Source Type: research

Specimen width affects vascular tissue integrity for in-vitro characterisation
J Mech Behav Biomed Mater. 2024 Mar 28;154:106520. doi: 10.1016/j.jmbbm.2024.106520. Online ahead of print.ABSTRACTThe preparation of slender specimens for in-vitro tissue characterisation could potentially alter mechanical tissue properties. To investigate this factor, rectangular specimens were prepared from the wall of the porcine aorta for uniaxial tensile loading. Varying strip widths of 16 mm, 8 mm, and 4 mm were achieved by excising zero, one, and three cuts within the specimen along the loading direction, respectively. While specimens loaded along the vessel's circumferential direction acquired consistent tissue pr...
Source: Journal of the Mechanical Behavior of Biomedical Materials - April 3, 2024 Category: Materials Science Authors: Marta Alloisio Joey J M Wolffs T Christian Gasser Source Type: research

Bone quality in zebrafish vertebrae improves after alendronate administration in a glucocorticoid-induced osteoporosis model
J Mech Behav Biomed Mater. 2024 Mar 24;154:106521. doi: 10.1016/j.jmbbm.2024.106521. Online ahead of print.ABSTRACTGlucocorticoid-induced osteoporosis (GIOP) changes the microarchitecture of bones and often leads to the reduction of bone-mineral density (BMD) and increased fracture rates. Zebrafish has been used as an alternative model for GIOP, however, the interaction of GIOP, and its treatment, with zebrafish bone morphometrics and mechanical properties, remains a challenge. Thus, this study aimed to evaluate the effects of prednisolone and alendronate on the properties of zebrafish vertebrae. Adult 7-month-old zebrafis...
Source: Journal of the Mechanical Behavior of Biomedical Materials - March 31, 2024 Category: Materials Science Authors: Fabio Rocha Bohns Riaz Akhtar Yung-Jen Chuang Po-Yu Chen Source Type: research

Kirchhoff's law-based velocity-controlled motion models to predict real-time cutting forces in minimally invasive surgeries
J Mech Behav Biomed Mater. 2024 Mar 25;154:106523. doi: 10.1016/j.jmbbm.2024.106523. Online ahead of print.ABSTRACTA theoretical framework, united by a "system effect" is formulated to model the cutting/haptic force evolution at the cutting edge of a surgical cutting instrument during its penetration into soft biological tissue in minimally invasive surgery. Other cutting process responses, including tissue fracture force, friction force, and damping, are predicted by the model as well. The model is based on a velocity-controlled formulation of the corresponding equations of motion, derived for a surgical cutting instrumen...
Source: Journal of the Mechanical Behavior of Biomedical Materials - March 30, 2024 Category: Materials Science Authors: Kostyantyn Malukhin Timon Rabczuk Kornel Ehmann Michael J Verta Source Type: research

Effects of fissure length and angle on the fracture modes of 3D printed teeth model: Insights from DIC-based fracture tests and meshless numerical simulations
J Mech Behav Biomed Mater. 2024 Mar 20;154:106512. doi: 10.1016/j.jmbbm.2024.106512. Online ahead of print.ABSTRACTTo investigate the influences of teeth fissure properties on their failure modes, 3D Printing technology is used to prepare the teeth models. The strain distributions of the teeth model surfaces at each moment of the loading processes are obtained by the DIC technique. And the progressive failure processes as well as the stress distributions of the teeth models are simulated by the improved Smoothed Particle Hydrodynamics (SPH) Method. Experimental results show that under the action of the steel ball, the teet...
Source: Journal of the Mechanical Behavior of Biomedical Materials - March 30, 2024 Category: Materials Science Authors: Shuyang Yu Li Ma Yuan Gao Hao Zheng Xueying Hu Runyu Liu Yue Shi Weidong Yin Source Type: research

The effects of different grading approaches in additively manufactured dental implants on peri-implant bone stress: A finite element analysis
This study investigates the effect of different Young's modulus grading approaches on stresses in the peri-implant bone via finite element analysis. The implant geometry was kept constant and in the case of the implant a node-dependent elastic modulus was assigned. In this way, a vertical, a radial and three torus based grading approaches were created and examined. A load was then applied directly to the occlusal surface of the implant crown. It was found that a local grading utilizing a torus shape was most favourable in terms of an effective stress peak reduction. The best torus shape tested achieved a 22 % reduction of ...
Source: Journal of the Mechanical Behavior of Biomedical Materials - March 29, 2024 Category: Materials Science Authors: Osman Akbas Andreas Greuling Meike Stiesch Source Type: research

Effects of sintering additives and sintering methods on the mechanical, antimicrobial and optical properties of Si < sub > 3 < /sub > N < sub > 4 < /sub > bioceramics
J Mech Behav Biomed Mater. 2024 Mar 26;154:106529. doi: 10.1016/j.jmbbm.2024.106529. Online ahead of print.ABSTRACTSi3N4 bioceramics were fabricated using GPS and SPS method with MgO-RE2O3 (RE = La, Nd, Gd, Ho and Lu) sintering additives. The effect of sintering methods and sintering additives on the grain growth, mechanical, antimicrobial properties and color of Si3N4 bioceramics were studied. Samples sintered with GPS are composed of β-Si3N4 and samples sintered with SPS are composed of α-Si3N4 and β-Si3N4. The growth of β-Si3N4 grains in samples sintered with GPS are more adequate. Samples sintered with GPS exhibit ...
Source: Journal of the Mechanical Behavior of Biomedical Materials - March 29, 2024 Category: Materials Science Authors: Songmo Du Fei Li Jie Zhang Zhanglin Chen Shijia Zhang Shuo Zhao Dengke Zhao Binbin Fan Kexin Chen Guanghua Liu Source Type: research

Viscoelastic polyacrylamide MR elastography phantoms with tunable damping ratio independent of shear stiffness
In this study, we evaluate the use of LPAA/PAA gels as physiologically accurate phantoms with tunable damping ratio, independent of shear stiffness, via MRE. Phantoms were made with 15.3 wt% PAA while the LPAA concentration ranged from 4.5 wt% to 8.0 wt%. MRE was performed at 9.4 T with 400 Hz vibration on all phantoms revealing a strong, positive correlation between damping ratio and LPAA content (p < 0.001). There was no significant correlation between shear stiffness and LPAA content, confirming a constant PAA concentration yielded constant shear stiffness. Rheometry at 10 Hz was performed to verify the damping ratio...
Source: Journal of the Mechanical Behavior of Biomedical Materials - March 27, 2024 Category: Materials Science Authors: L Tyler Williams Zheng Cao Ali H Lateef Matthew D J McGarry Elise A Corbin Curtis L Johnson Source Type: research