Presentation of an Approach on Determination of the Natural Frequency of Human Lumbar Spine Using Dynamic Finite Element Analysis

Fan, Ruifeng; Liu, Jie; Liu, Jun; Wang, Weijun

doi:10.1155/2019/5473891

Cited by 7 publications

(3 citation statements)

References 31 publications

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“…Based on the micro-CT scan on the femur specimens, the microimages of the femur were obtained by SKYSCAN software, and then the images were imported into MIMICS software to reconstruct the geometric model of the rat femur, and the cortical bone FE model in the middle femur and the intact femur FE model were established by ABAQUS software applying C3D4 element [ 19 ].…”

Section: Methodsmentioning

confidence: 99%

Investigation on the Differences in the Failure Processes of the Cortical Bone under Different Loading Conditions

Dai

Fan

et al. 2022

Applied Bionics and Biomechanics

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Cortical bone is a transversely isotropic material, and the mechanical properties may be related to the loading direction on the osteon. Therefore, analyzing the differences in the failure processes of cortical bone under different loading conditions is necessary to explore the measures for reducing the incidence of fracture. In this study, to investigate the effects of different loading directions on the fracture performance in the cortical bone, a numerical method that could simultaneously simulate the failure processes in the cortical bone structure under compression and bending loads was established based on continuum damage mechanics theory. The prediction accuracy and feasibility of the numerical method were first verified by comparing with the corresponding experimental results. Then, the differences in the failure process and fracture performance of the same cortical bone structure under compression and bending loads were investigated. The simulation results indicated that for the same structure, the slip-open failure mode appeared under compression load, and the crack propagated along a certain angle to the loading direction; the tension-open failure mode appeared under bending load, and the crack propagated along the direction perpendicular to the loading direction. Meanwhile, the fracture load was greater and the fracture time was later in the compression than in the bending condition. These phenomena stated that discrepant failure processes and fracture patterns occurred in the same cortical bone structure under different loading conditions. The main reason may be related to the tension–compression asymmetry and transversely isotropic characteristics in the cortical bone material. The fracture simulations in the cortical bone under different loading conditions could improve the prediction accuracy in bone biomechanics and provide the prevention method for cortical bone damage and fracture.

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Section: Methodsmentioning

confidence: 99%

Investigation on the Differences in the Failure Processes of the Cortical Bone under Different Loading Conditions

Dai

Fan

et al. 2022

Applied Bionics and Biomechanics

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“…A similar problem is solved by Fan R.X., Liu, J., Liu J., Wang W.J. [12]. The work of Pourahmadi M.R., Takamjani I. et al [13] is devoted to a detailed review of kinematic models of the spine.…”

Section: Status Of the Issuementioning

confidence: 97%

Construction of Mathematical Relationships and Software Implementation of a Simulation Model of the Behavior of Components of the Musculoskeletal System of a Person

Nikonova¹,

Nasyrov²

2019

Proceedings of the 21st International Workshop on Computer Science and Information Technologies (CSIT 2019)

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The article is devoted to the creation of a software tool for modelling the behaviour of the components of the musculoskeletal system using the example of segments of the spine using the Orne-Liu formalism. A system of differential equations is written that describes the movement of the components of the spine in the sagittal plane (up-down, forward-backward, rotation).A tool has been obtained that allows one to study the evolution of the centres of three vertebrae interconnected when applying standard exposure. The data obtained during the calculations can then be applied to the already developed three-dimensional model of the thoracic spine. In the future, a similar mathematical model can be applied to the entire spine, since the initial data for the cervical, thoracic and lumbar spine are calculated and can be used.

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“…3 The human body may potentially be injured due to WBV and the most common effects of this vibration are low back pain, visual disability, motion sickness, nerve injury, and spinal fracture. 4 Drivers feel discomfort at low-frequency vibration, however, the appropriate seat design prevents injuries and discomfort for a short duration. 5 The ride comfort is strongly influenced by seat pressure distribution, sitting posture, amplitude, frequency of vibration, type of suspension, [6][7][8] properties of seat.…”

Section: Introductionmentioning

confidence: 99%

Development and analysis of a novel biomechanical model for seated occupants

Guruguntla

Lal

2021

Proceedings of the Institution of Mechanical Engineers, Part D:

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Seated occupants may experience discomfort or meet with injuries if the vertical vibration frequency lies in the range of 4–20 Hz. To examine the effect of vibration on seated occupants, it is necessary to develop a biomechanical model that can precisely predict the biodynamic responses (seat to head transmissibility, driving point mechanical impedance, and apparent mass) of a real human. In the past, none of the studies segregated the human body mass into bones and muscles mass that have distinct mechanical properties. In this article, the work is carried out in four steps: first, development of a novel 8- dofs biomechanical model by considering both bone and muscle masses; second, development of all the feasible configurations of 8- dofs model followed by identification and optimization of model parameters with firefly algorithm (FA); third, calibration of all the feasible models as per the standards of biodynamics and selection of best four models; and fourth, comparison of biodynamic responses of best four models with experimental responses and past developed models. The goodness of fit of a seat to head transmissibility, driving point mechanical impedance, and apparent mass for the best model is obtained 0.986, 0.976, and 0.956, respectively.

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Presentation of an Approach on Determination of the Natural Frequency of Human Lumbar Spine Using Dynamic Finite Element Analysis

Cited by 7 publications

References 31 publications

Investigation on the Differences in the Failure Processes of the Cortical Bone under Different Loading Conditions

Investigation on the Differences in the Failure Processes of the Cortical Bone under Different Loading Conditions

Construction of Mathematical Relationships and Software Implementation of a Simulation Model of the Behavior of Components of the Musculoskeletal System of a Person

Development and analysis of a novel biomechanical model for seated occupants

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