Scientific Visualization, 2019, volume 11, number 2, pages 114 - 125, DOI: 10.26583/sv.11.2.09
Using the finite-element metod for visualization of the stress-strain state of fish
Authors: Y.P. Tolmacheva 1,À,Â, A.V. Chmatkova2,Â, S.A. Zaides3,Â
A Limnjlogical Institute of Siberian Branch of the RAS, Russia, Irkutsk
B Irkutsk National Research Techical University, Russia, Irkutsk
1 ORCID: 0000-0002-4842-8669, tjul78@mail.ru
2 ORCID: 0000-0002-3724-6157, annashmatkova@yandex.ru
3 ORCID: 0000-0001-9416-7749, zsa@istu.edu
Abstract
The development of virtual methods of reconstruction and functional modeling of anatomical structures has opened new opportunities for evolutionary and ontogenetic studies on the relationship of form and function. One of the main is the analysis of the mechanical properties of bone tissue, in particular, its stress-strain state and variability of shape under the influence of external forces. To study the issues of adaptive transformation of the jaw apparatus of fish, in this paper we have proposed one of the modern mathematical methods for calculating the stress-strain state of the object using the finite element method. Based on the data of the computer tomograph Gendex GXCB-500 with the help of engineering design system Femap V 10, a 3D finite element model of the maxillary bone of the visceral skeleton of bony fish with a retractable type of oral apparatus was developed and analyzed. It is established that the maximum tension in the functioning of the jaw apparatus falls on the ascending processes of the premaxillary bone, which in turn is the cause of the reduction of the mouth extension in the plankto- and ichthyophages. With the elongation of the jaws of the plankto- and ichthyophages, the pressure on the ascending processes increases significantly, which causes their gradual reduction. Thus, the variability of bone shape, first of all, occurs in places of greatest stress, arising during the functioning of the jaw apparatus.
Keywords: functional morphology, stress-strain state, finite element model, visceral skeleton, jaw apparatus, praemaxillare, fish.
