نتایج جستجو برای: repeated loads
تعداد نتایج: 148796 فیلتر نتایج به سال:
With the development of economy and transportation, more cross-sea bridges are appearing in people’s view. However, not only subjected to repeated traffic loads but also corrosion from marine environment. In addition, steel box girder deck plate is directly vehicle loads, its welded details highly susceptible fatigue damage destruction, resulting or top plate-U rib girder. This paper based on f...
Some important developments have occurred since April 2014, when I first submitted this article for publication. Because the two-volume set of Festschrift contributions in which this article was recently published is not available online, I have decided (with permission of those involved in the Festschrift) to have my own article posted on the website of the University of Kansas Law School (www...
End-to-end automated application design and deployment poses a significant technical challenge. With increasing scale and complexity of IT systems and the manual handling of existing scripts and configuration files for application deployment that makes them increasingly error-prone and brittle, this problem has become more acute. Even though design tools have been used to automated system desig...
the safety of buried pipes under repeated load has been a challenging task in geotechnical engineering. in this paper artificial neural network and regression model for predicting the vertical deformation of high-density polyethylene (hdpe), small diameter flexible pipes buried in reinforced trenches, which were subjected to repeated loadings to simulate the heavy vehicle loads, are proposed. t...
The Effect of Lifting Speed on Cumulative and Peak Biomechanical Loading for Symmetric Lifting Tasks
BACKGROUND To determine the influence of lifting speed and type on peak and cumulative back compressive force (BCF) and shoulder moment (SM) loads during symmetric lifting. Another aim of the study was to compare static and dynamic lifting models. METHODS Ten male participants performed a floor-to-shoulder, floor-to-waist, and waist-to-shoulder lift at three different speeds [slow (0.34 m/s),...
The quasi-static response of bulk muscular tissue to indentation was measured on the posterior lower legs of living human subjects. No residual limbs were tested; all subjects had intact lower limbs. For loads up to 7.0 N on an 8.0 mm diameter flat-tipped indentor, the response was repeatable without prior 'preconditioning'. The data at any test location exhibited substantial random scatter, bu...
This study compared the physiological, perceptual and mechanical responses to kettlebell swings at different loads and swing speeds. Following familiarization 16 strength trained participants (10 males, six females, mean age ± SD = 23 ± 2.9) performed four trials: 2 min kettlebell swings with an 8 kg kettlebell at a fast cadence; 2 min kettlebell swings with an 8 kg kettlebell at a slow cadence...
Perennial and intense malaria transmission (holoendemic malaria) and Epstein-Barr virus (EBV) infection are 2 cofactors in the pathogenesis of endemic Burkitt lymphoma (eBL). In the present study, we compared EBV loads in children living in 2 regions of Kenya with differing malaria transmission intensities: Kisumu District, where malaria transmission is holoendemic, and Nandi District, where ma...
One major source of error commonly encountered in determining the fatigue life of a given element arises from the loads involved, which are usually of random nature. As a rule, resistance analyses, carried out by simulation or tests, are done by using a loading history accounting for the real loads involved that is repeated indefinitely until failure is encountered. The result is one of the man...
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