نتایج جستجو برای: dynamic and static loading tests
تعداد نتایج: 16935035 فیلتر نتایج به سال:
Background and Objective: The purpose of the present research was to examine the effect of practice type (physical, mental and mixed practices) on static and dynamic balance in elderly women at an age range of 60-75 years with no history of falling. Materials and Methods: Statistical sample of this research study included 45 none falling elderly women at an age range of 60-75 years ...
Samples of descending mid-thoracic aortas were obtained from human autopsies and experiments were performed to determine the effect of strain rate and direction of loading on the failure properties of the tissue in uniaxial tension. The tests were performed at quasi-static strain rates in the range 0.01 s-1-0.07 s-1 and dynamic tests in the range 80 s-1-100 s-1. Ultimate stress and extension ra...
In this paper, using theory of sheets, the deflection of suspended diaphragm has been obtained under uniform and circular loading. This type of diaphragm, unlike other diaphragms, has a central support which is recommended to be used in MEMS applications. The relationship between diaphragm deflection and static analysis of this diaphragm enjoys a great significance in investigating and understa...
There have been numerous researchers that have investigated the properties of human intervertebral discs. However, there has been no attempt to characterize the effects of dynamic loading on the compressive stiffness of human lumbar intervertebral discs. Therefore, the purpose of this study was to develop the compressive stiffness properties of lumbar intervertebral discs when subjected to vari...
Thoracic force-deflection characteristics have been measured in the living subhuman primate as a step towards the analysis of cardio-thoracic injuries. Mechanisms of injury were investigated by subjecting Rhesus monkeys seated on a sled to static and dynamic chest displacements (24 tests) by means of a charge fired projectile equipped with a 3 in. dia. impact plate and compensated strain gauges...
Abstract Introduction: Disturbance in maintaining balance and controlling posture is one of the consequences of aging, which, with changes in standing and walking patterns, causes a decrease in functional readiness in the elderly, which leads to a decrease in the sense of balance, loss of coordination, and muscle weakness in these people. As a result, it causes many problems such as frequent f...
objective:more similarity to in vivo medium may help to increase the proliferation and differentiation of cells at in vitro condition. the present study has investigated the effect of a dynamic mediumand nano hydroxyapatite (nha) presence on proliferation and differentiation of mesenchymal stem cells (mscs) to bone cells using electrospun polycaprolactone (pcl) scaffolds. methods: we prepared p...
In order to study the stability of tunnels under static-dynamic load, a new large-scale model test system was developed. The composed static loading unit, dynamic data acquisition unit and bench, which were specially designed overcome technical problems test, such as control, high-rate strain measurement easy operation. used 3600 × 2500 mm in size larger load disturbance area than tests. It can...
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