Abstract
A mathematical model is proposed to analyze the spinal strain-deformation condition resulting from axial and lateral g-loads that are generated by changes in the gravity field and/or pilot’s actions during high-performance aircraft maneuvering under flight overload conditions. An algorithm of solution has been developed, which takes into account changes in the intervertebral disk pressure and the fibrous ring shape at the time when loading reaches close-to-critical g-values. Calculation of the spinal-strain deformation condition was implemented using the SPLEN computer system (KOMMEK, Russia). Analysis of the spinal straindeformation condition was made for two types of external loads: normal load and unilateral load with the bending moment. Maximum permissible loads on the spinal segment were evaluated, and a pattern of distribution of strain intensity and mean strains, spinal deformation, and the destruction field was described. The developed computer models can be used as a basis for developing a technique of predicting characteristic spinal injuries due to different extreme loads and pathologies.
This is a preview of subscription content, log in via an institution to check access.
References
Grigor’ev, A.I., Volozhin, A.I., and Stupakov, G.P., Mineral’nyi obmen u cheloveka v usloviyakh izmenennoi gravitatsii. Problemy kosmicheskoi biologii (Mineral Metabolism in Humans under the Conditions of Altered Gravity. Problems of Space Biology), Moscow, 1994, vol. 74.
Prokhonchukov, A.A., Zhizhina, N.A., and Tigranyan, R.A., Gomeostaz kostnoi tkani v norme i pri ekstremal’nom vozdeistvii (Bone Homeostasis in Normal and Extreme Exposure), Moscow, 1984, vol. 49.
Rodionova, N.V., Studies on space biology in the Institute of Zoology of NAS. Cytological mechanisms of bone loss in microgravity and hypokinesia, Vestn. Zool., 2008, vol. 42, no. 5, pp. 387.
Chumachenko, E.N., Volozhin, A.I., and Markin, V.A., Biomechanical model and method of calculation of the stress-strain state of the periodontal complex mandible, Naukoemkie Tekhnol., 2001, vol. 2, no. 1, pp. 49
Collins, R., Techenie v poristykh sredakh (Flow in Porous Materials), Moscow, 1974.
Levchenko, S.K., Dreval’, O.N., Il’in, A.A., et al., Experimental functional anatomical study of transpedicular stabilization of the spine, Zh. Vopr. Neirokhir. im. N. N. Burdenko, 2011, vol. 75, no. 1, pp. 20.
Stupakov, G.P., Volozhin, A.I., Polyakov, A.N., et al., The status value of the mineral component of bone strength characteristics for its inactivity, Mekh. Kompoz. Mater., 1982, no. 2, p. 315.
Belytschko, T., Kulak, R.F., Schultz, A.B., and Galante, J.O., Finite element stress analysis of an intervertebral disc, J. Biomech., 1974, vol. 7, no. 3, pp. 277.
Kachanov, L.M., Osnovy mekhaniki razrusheniya (Fundamentals of Fracture Mechanics), Moscow, 1974.
Author information
Authors and Affiliations
Corresponding author
Additional information
Original Russian Text © E.N. Chumachenko, I.V. Logashina, 2014, published in Aviakosmicheskaya i Ekologicheskaya Meditsina, 2014, Vol. 48, No. 5, pp. 51–57.
Rights and permissions
About this article
Cite this article
Chumachenko, E.N., Logashina, I.V. Calculation of the strain-deformation condition of the spinal motor segment during loading. Hum Physiol 42, 820–825 (2016). https://doi.org/10.1134/S0362119716070033
Received:
Published:
Issue Date:
DOI: https://doi.org/10.1134/S0362119716070033