Local Strain Distribution in Real Three-Dimensional Alveolar Geometries
نویسندگان
چکیده
منابع مشابه
Exact Localization of Planar Acoustic Reflectors in Three-Dimensional Geometries
In this paper we propose a methodology for localizing acoustic planar reflectors in a 3D geometry, using acoustic measurements acquired by a set of microphones. An acoustic source emitting a known signal is placed close to the wall to be identified, and is used for estimating the source-to-microphone impulse responses. In a preliminary step, such estimates are employed for localizing the source...
متن کاملThree Dimensional Strain Field Morphing
In this paper, we present a new technique for 3D shape morphing using strain fields. Strain is an important geometric quantity used in mechanics to describe the deformation extent of objects. We use it to analyze and control deformation in morphing. Using the position vector field, the strain field between source and target shapes can be obtain. This strain field is then interpolated between ze...
متن کاملthree-dimensional modeling of strain localization in cosserat continuum theory
in this paper, a higher order continuum model is presented based on the cosserat continuum theory in 3d numerical simulation of shear band localization. as the classical continuum models suffer from the pathological mesh-dependence in strain softening models, the governing equations are regularized by adding the rotational degrees-of-freedom to conventional degrees-of-freedom. the fundamental r...
متن کاملStress distribution in a three dimensional, geometric alveolar sac under normal and emphysematous conditions
Pulmonary emphysema is usually the result of chronic exposure to cigarette smoke in at risk individuals. To investigate the hypothesis that lung damage in emphysema results from coincident weakening in the structural properties of the tissue and increased mechanical forces--as one explanation of the continued development of pulmonary emphysema after smoking cessation--we developed a three dimen...
متن کاملEnergy strain in three-dimensional protein structures.
BACKGROUND Steric strain in protein three-dimensional structures is related to unfavorable inter-atomic interactions. The steric strain may be a result of packing or functional requirements, or may indicate an error in the coordinates of a structure. Detailed energy functions are, however, usually considered too noisy for error detection. RESULTS After a short energy refinement, a full-atom, ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Annals of Biomedical Engineering
سال: 2011
ISSN: 0090-6964,1573-9686
DOI: 10.1007/s10439-011-0328-z