کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7208907 1469113 2014 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Experimental and numerical investigations of Otala lactea's shell-I. Quasi-static analysis
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی پزشکی
پیش نمایش صفحه اول مقاله
Experimental and numerical investigations of Otala lactea's shell-I. Quasi-static analysis
چکیده انگلیسی
At the first glance, mollusk shells may seem complex spatial structures with interesting shapes, forms and colors. However, from an engineering point of view, they are mechanical barriers which provide remarkable protection against environmental factors. These biological composites which exhibits an attractive combination of stiffness, strength and toughness, may be mimicked in bio-inspired materials. In the present work, a mathematical method is used to develop comprehensive three-dimensional (3D) numerical models of mollusk shells. The models are employed to study the mechanical behavior of the shells under static loading conditions. Numerical analyses are conducted using ANSYS finite element (FE) codes. A combination of indentation testing and scanning electron microscopy (SEM) is utilized to confirm the validity of the models and the solving procedures. A good agreement is observed between the shape, size and location of the failure obtained from experimental tests and numerical predictions. The results indicate that the columella increases the ability of mollusk shells to withstand applied mechanical forces without failure. Further, it can be concluded that the coiling geometry of the shells adequately modifies the stress distribution and reduces the stress concentration.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of the Mechanical Behavior of Biomedical Materials - Volume 32, April 2014, Pages 8-16
نویسندگان
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