Title
Estimation of spinal loading in vertical vibrations by numerical simulation
Author
Verver, M.M.
van Hoof, J.F.A.M.
Oomens, C.W.J.
van de Wouw, N.
Wismans, J.S.H.M.
Publication year
2003
Abstract
Objective. This paper describes the prediction of spinal forces in car occupants during vertical vibrations using a numerical multi-body occupant model. Background. An increasing part of the population is exposed to whole body vibrations in vehicles. In literature, vertical vibrations and low back pain are often related to each other. The cause of these low back pains is not well understood. A numerical human model, predicting intervertebral forces, can help to understand the mechanics of the human spine during vertical vibrations. Methods. Numerical human and seat models have been used. Human model responses have been validated for vertical vibrations (rigid and standard car seat condition): simulated and experimental seat-to-human frequency response functions have been compared. The spinal shear and compressive forces have been investigated with the model. Results. The human model seat-to-pelvis and seat-to-T1 frequency response functions in the rigid seat condition and all seat-to-human frequency response functions in the standard car seat condition approach the experimental results reasonably. The lumbar and the lower thoracic spine are subjected to the largest shear and compressive forces. Conclusions. The human model responses correlate reasonable with the volunteer responses. The predicted spinal forces could be used as a basis for derivation of hypothetical mechanisms and better understanding of low back pain disorders.Relevance In order to solve the problem of whole body vibration related injuries, knowledge about the interaction between human spinal vertebrae in vertical vibrations is required. This interaction cannot be measured in volunteer experiments. This paper describes the application of a numerical human model for prediction of spinal forces, that could be used as a basis for derivation of hypotheses regarding low back pain disorders. © 2003 Elsevier Ltd. All rights reserved.
Subject
Human modelling
Spinal loading
Whole body vibration
Biological organs
Compressive strength
Vehicles
Spinal loading
Biomechanics
adult
article
body mass
car driving
compression
controlled study
female
height
human
human experiment
low back pain
male
mechanical stress
normal human
prediction
priority journal
simulation
spine
thoracic spine
vibration
volunteer
weight bearing
Adult
Automobile Driving
Computer Simulation
Female
Humans
Lumbosacral Region
Male
Models, Biological
Physical Stimulation
Posture
Spine
Stress, Mechanical
Vibration
Weight-Bearing
To reference this document use:
http://resolver.tudelft.nl/uuid:21b95c33-7ef2-46ec-b297-5ff7e7043554
DOI
https://doi.org/10.1016/s0268-0033(03)00145-1
TNO identifier
237339
ISSN
0268-0033
Source
Clinical Biomechanics, 18 (9), 800-811
Document type
article