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A new adhesive receding contact model is presented in this paper for the nanowire in three-point bending test. Because of its flexurality, the nanowire in test may lift-off/separate from its supporting elastic medium, which can dramatically change the nanowire boundary conditions and deformations. The changes of the nanowire boundary conditions and deformations have the significant impact on the interpretation...
In order to check validity of the porcine ligamentum flavum as a substitute of human tissue for evaluating the epidural needles, the thickness and the Young's modulus were measured, and a finite element analysis was carried out. Twenty-four specimens were stained by the Elastica-van Gieson method. The average value of the thickness was 1.2 mm. The tensile tester was employed for measuring the Young's...
Randomly cross-linked fiber networks are the building blocks of many biological systems such as cytoskeleton and tissue scaffolds. Here, we study the elastic properties of these networks at various length scales by mapping their elasticity into heterogeneous two-dimensional continuum media. The inhomogeneous elastic properties of the continuum domain are obtained from a minimization technique. It...
After encapsulation, thermo-mechanical deformation builds up within the electronic packages due to coefficient of thermal expansion (CTE) mismatch between the respective materials within the package as it cools to room temperature. Printed circuit boards (PCB) are designed and manufactured with a variety of polyamide materials such as solder mask, metallic material such as copper trace, composite...
Ultrasound elasticity imaging shows promise as a new way for early detection of cancers by assessing the elastic characteristics of soft tissue. So far the commonly used approach involves solving the so-called inverse elasticity problem of recovering elastic parameters from displacement measurements. We propose a finite-element- based nonlinear scheme to estimate the elasticity distribution of soft...
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