 |
|
Proper Material Properties Are Required for the Finite Element Method—Reply
|
|
| Since this article does not have an abstract, we have provided the first 150 words of the full text and any section headings. |
|
|
|
In reply
We thank Drs Schachar and Abolmaali for their insightful comments. We are in agreement that the finite element method is an excellent way to analyze the effects of blunt trauma to the eye.
The elastic modulus of the lens was obtained from the results by Fisher.1-2 A simplification of that data using graphical force displacement with an assumption of the average cross-sectional area for an oblong sphere (lens shape) and standard force displacement measurements for an oblong sphere assuming linear elastic behavior was used to determine the elastic modulus through inverse dynamics.
We could not directly use the previously published lens stiffness data by Czygan and Hartung3 because of a difference in method. The lens modulus may not warrant direct comparison to the cornea or scleral moduli, as the cornea and scleral "elastic" moduli are not linearly elastic. The material properties are nonlinear in their stress-strain behavior. Elastic . . . [Full Text of this Article]
AUTHOR INFORMATION
Joel Stitzel, PhD;
Stefan Duma, PhD
 CiteULike  Connotea  Del.icio.us  Digg  Reddit  Technorati
What's this?
RELATED LETTER
Proper Material Properties Are Required for the Finite Element Method
Ronald A. Schachar and Ali Abolmaali
Arch Ophthalmol. 2006;124(7):1064-1065.
EXTRACT
| FULL TEXT
RELATED ARTICLE
Blunt Trauma of the Aging Eye: Injury Mechanisms and Increasing Lens Stiffness
Joel D. Stitzel, Gail A. Hansen, Ian P. Herring, and Stefan M. Duma
Arch Ophthalmol. 2005;123(6):789-794.
ABSTRACT
| FULL TEXT
|
