This paper proposes a mass-spring model of the dynamics of a human thigh based on real data acquired. Using a force sensor mounted on a robot arm the deformation of the thigh with respect to an external force is measured. The stress-strain curves we obtained exhibit a strong non-linearity due to the incompressibility of the human tissue. Hence, we propose a two-layer model of the thigh using bo...

The purpose of the presented work is to introduce the novel design of electrostatic energy harvester using bistable mechanism with compensational springs in gravity field capable of providing the output of several μW under the excitation of extremely small amplitude (up to 0.2g) and low frequency (10-100Hz). Presented energy harvester uses the bistable hysteresis modification to achieve low-fre...

This paper proposes a mass spring model of the dynamics of a human thigh based on real data acquired Using a force sensor mounted on a robot arm the deformation of the thigh with respect to an external force is measured The stress strain curves we obtained exhibit a strong non linearity due to the incompressibility of the human tissue Hence we propose a two layer model of the thigh using both l...

BACKGROUND Recent studies reported seasonal differences in gene expression in white blood cells, adipose tissue, and inflammatory biomarkers of the immune system. There is no data on the seasonal variations of these biomarkers in the US general population of both children and adults. Then aim of this study is to explore the seasonal trends in complete blood count (CBC), and C-reactive protein (...

As the life age of the existing structures are required to meet the changing demands on civil infrastructures. So strengthening and retrofitting are required. Recently many techniques to strengthen the reinforced concrete beams in flexural by using fiber reinforced polymer (FRP) had appeared. The most famous technique among them is strengthening the (RC) beams with externally bonded FRP sheet t...

When performing finite element analysis of mechanical devices, it is difficult to calculate including the linear motion guide because cost huge. In this paper, two models considering rigidity are proposed. One an iterative calculation method that repeats load distribution theory and FEM. The other a direct using non-linear spring follows obtained by analysis. As result verification experiments ...

We describe simple one-dimensional models of passive (no energy input, no control), generally dissipative, vertical hopping and oneball juggling. The central observation is that internal passive system motions can conspire to eliminate collisions in these systems. For hopping, two point masses are connected by a spring and the lower mass has inelastic collisions with the ground. For juggling, a...

Rotation of a single bacterial flagellar motor is powered by multiple stators tethered to the cell wall. In a " power-stroke " model the observed independence of the speed at low load on the number of stators is explained by a torque-dependent stepping mechanism independent of the strength of the stator tethering spring. On the other hand, in models that depend solely on the stator spring to ex...

air spindles are one of the main elements of precise machine tools. vibration of these spindles is one of the vital issues necessary for investigation. among parameters which influence air spindle vibrations are rotational speed, compression air method, input nozzle diameter, air gap pressure. in this study using ansys, the effects of air gap thickness on air spindle vibrations have been invest...