Density-based load estimation using two-dimensional finite element models: a parametric study.

Max A Bona; Larry D Martin; Kenneth J Fischer

doi:10.1080/10255840600792451

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Density-based load estimation using two-dimensional finite element models: a parametric study.

Max A Bona·Larry D Martin·Kenneth J Fischer

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Abstract

A parametric investigation was conducted to determine the effects on the load estimation method of varying: (1) the thickness of back-plates used in the two-dimensional finite element models of long bones, (2) the number of columns of nodes in the outer medial and lateral sections of the diaphysis to which the back-plate multipoint constraints are applied and (3) the region of bone used in the optimization procedure of the density-based load estimation technique. The study is performed using two-dimensional finite element models of the proximal femora of a chimpanzee, gorilla, lion and grizzly bear. It is shown that the density-based load estimation can be made more efficient and accurate by restricting the stimulus optimization region to the metaphysis/epiphysis. In addition, a simple method, based on the variation of diaphyseal cortical thickness, is developed for assigning the thickness to the back-plate. It is also shown that the number of columns of nodes used as multipoint constraints does not have a significant effect on the method.

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Max A Bona, Larry D Martin, Kenneth J Fischer. 2006. Density-based load estimation using two-dimensional finite element models: a parametric study.. https://doi.org/10.1080/10255840600792451

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