Summary
A new method of functional morphological analysis is presented. Combining stereophotogrammetry with the finite element technique, a new approach, permits a three-dimensional numerical stress analysis of arbitrarily shaped bodies to be performed. The stereophotogrammetric method which originated for three-dimensional calculations in the study of surfaces in land surveying is well suited for the determination of the nodal co-ordinates required for the finite element method, an engineering technique developed for behavioural analysis of solids and fluids responding to external forces. This approach was tested in a study of the functional morphology of the bill of an African wading bird, the shoebill Balaeniceps rex. A few findings of that study are given here in order to demonstrate the method. Advantages of the finite element method compared with other techniques for stress analysis of anatomical structures are also discussed. The method presents exciting possibilities for predicting displacement and stress responses more accurately and in much greater detail. The scope of this powerful computerized stress analysis technique is greatly enhanced with the introduction of stereophotogrammetry for determining the three-dimensional co-ordinates of complex anatomical structures. With the finite element method, the properties of the bone structure can be modelled as they occur in the life of the animal. This is not possible with physical models. Furthermore, rare specimens can be analysed non-destructively.
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References
Adams LP (1978a) The use of a non-metric camera for very short range dental stereophotogrammetry. Photogram Record (9) 51:405–414
Adams LP (1978b) The use of photogrammetry in the study of the sea and the coasts. Proc Sixth Conf Southern African Surveyors, Cape Town
Adams LP (1980) The use of short range stereophotogrammetry in the study of the morphology of the Shoebill bill. Photogram Record (10) 55:73–84
Bathe KJ (1982) Finite Element Procedures In: Engineering Analysis. Prentice Hall, Inc., New Jersey
Blaimont P, Burny F (1968) Résistance á la traction et dureté de la diafyse fémoral. Acta Orthop Belg 34:883–892
Bock WJ (1966) An approach to the functional analysis of the bill shape. Auk 83:10–51
Brekelmans WAM, Poort HW, Slooff TJJH (1972) A new model to analyse the mechanical behaviour of skeletal parts. Acta Orthop Scand 43:301–317
Buckland-Wright JC (1978) Bone structure and the patterns of force transmission in the cat skull (Felis catus). J Morphol 155:35–62
Guillet A (1978) Distribution and conservation of the Shoebill Balaeniceps rex in southern Sudan. Biol Conserv 13:39–49
Guillet A (1979) Aspects of the foraging behaviour of the Shoebill. Ostrich 50:252–255
Hall-Martin AJ, Rüther H (1979) Application of stereophotogrammetric techniques for measuring African elephants. Koedoe 22:187–198
Henshell RD (1975) The Pafec general purpose finite element computer program. Pafec Ltd., Nottingham
Landsborough Thomson A (1964) A new Dictionary of Birds. Nelson, Nelson Ltd, London
Rüther H (1982) Relative orientation with limited control in close range photogrammetry. Ph D Thesis, University of Cape Town
Schwidefsky K (1959) An Outline of Photogrammetry. Pitman, London
Scogings DA (1978) The experimental recording of petroglyphs and archaeological sites. Photogram Record 9, 51:327–341
Slooff TJJH (1970) The Influence of Acrylic Cement on the Fixation of the Hipendoprosthesis. Thoben Offsett Drukkery, Nijmegen
Thompson EH (1962) Photogrammetry in the restoration of Castle Howard. Photogram Record 4, 20:94–119
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Guillet, A., Doyle, W.S. & Rüther, H. The combination of photogrammetry and finite elements for a fine grained functional analysis of anatomical structures. Zoomorphology 105, 51–59 (1985). https://doi.org/10.1007/BF00312073
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DOI: https://doi.org/10.1007/BF00312073