کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
875293 910374 2007 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A simplified approach to quasi-linear viscoelastic modeling
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی پزشکی
پیش نمایش صفحه اول مقاله
A simplified approach to quasi-linear viscoelastic modeling
چکیده انگلیسی

The fitting of quasi-linear viscoelastic (QLV) constitutive models to material data often involves somewhat cumbersome numerical convolution. A new approach to treating quasi-linearity in 1-D is described and applied to characterize the behavior of reconstituted collagen. This approach is based on a new principle for including nonlinearity and requires considerably less computation than other comparable models for both model calibration and response prediction, especially for smoothly applied stretching. Additionally, the approach allows relaxation to adapt with the strain history.The modeling approach is demonstrated through tests on pure reconstituted collagen. Sequences of “ramp-and-hold” stretching tests were applied to rectangular collagen specimens. The relaxation force data from the “hold” was used to calibrate a new “adaptive QLV model” and several models from literature, and the force data from the “ramp” was used to check the accuracy of model predictions. Additionally, the ability of the models to predict the force response on a reloading of the specimen was assessed.The “adaptive QLV model” based on this new approach predicts collagen behavior comparably to or better than existing models, with much less computation.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Biomechanics - Volume 40, Issue 14, 2007, Pages 3070–3078
نویسندگان
, , , ,