نتایج جستجو برای: stiffness distribution

تعداد نتایج: 649702  

Journal: :Acta Mechanica et Automatica 2023

Abstract This paper presents the results of an experimental analysis distribution transverse stiffness cylindrical compression helical springs with selected values geometric parameters. The influence number active coils and design end on was investigated. Experimental tests were carried out for 18 sets spring samples that differed in coils, end-coil index, three measurements taken per sample, a...

Reinforced concrete frame buildings with Open Ground Story (OGS) are one of the most common building configurations in urban habitat. These configurations are known to be vulnerable to seismic excitations, primarily due to the sudden loss in strength in the ground story and differential stiffness distribution throughout the structure. The differential stiffness distribution is attributed primar...

Journal: :Journal of the Japan Society for Precision Engineering 1999

2015
Huanli Sun Edgar H. H. Wong Yan Yan Jiwei Cui Qiong Dai Junling Guo Greg G. Qiao Frank Caruso

Particle stiffness is emerging as an important parameter in determining the cell uptake dynamics of particles. Understanding the effects of capsule stiffness on their biological behavior is essential for the development of polymer capsules as therapeutic carriers. Herein, we report the preparation of polysaccharide capsules via atom transfer radical polymerization-mediated continuous assembly o...

2007
Pavel Sztefek Robin Olsson

Initial destructive experimental studies have demonstrated significant stiffness variations in the damage region and large differences in compression and tension [2]. A quantitative description of the stiffness reduction in an artificial impact damage was demonstrated in [3], employing a non-destructive testing method coupled with an inverse approach. Tensile stiffness distribution of real impa...

Journal: :Physical review letters 2004
J A Aström J Timonen Mikko Karttunen

A first-principles numerical model for crumpling of a stiff tethered membrane is introduced. This model displays wrinkles, ridge formation, ridge collapse, and initiation of stiffness divergence. The amplitude and wavelength of the wrinkles and the scaling exponent of the stiffness divergence are consistent with both theory and experiment. Close to the stiffness divergence further buckling is h...

Journal: :Neurology 2000
M C Dalakas M Fujii M Li B McElroy

OBJECTIVE To evaluate the clinical spectrum of anti-GAD-positive patients with stiff-person syndrome (SPS) and provide reproducible means of assessing stiffness. BACKGROUND SPS can be difficult to diagnose. Delineation of the clinical spectrum in a well defined population will increase diagnostic sensitivity. METHODS In 20 anti-GAD-positive patients with SPS (six men, 14 women), screened am...

Journal: :Bone 2010
Srikant Nekkanty Janardhan Yerramshetty Do-Gyoon Kim Roger Zauel Evan Johnson Dianna D Cody Yener N Yeni

Stress magnitude and variability as estimated from large scale finite element (FE) analyses have been associated with compressive strength of human vertebral cancellous cores but these relationships have not been explored for whole vertebral bodies. In this study, the objectives were to investigate the relationship of FE-calculated stress distribution parameters with experimentally determined s...

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