Development of Graphical Solution to Determine Optimum Hollowness of Hollow Cylindrical Roller Bearing Using Elastic Finite Element Analysis

Darji, Pranav B.; Vakharia, D. P.

doi:10.5772/46160

Cited by 4 publications

(5 citation statements)

References 18 publications

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“…The measured contact width values were 0.104, 0.073, 0.065, and 0.054 mm for 100, 50, 30, and 10 N load, respectively. The deformation area is consistent with the expected Hertz contact area for a glass tube with 6 mm outer diameter and 4 mm inner diameter pressing into an infinite glass plate . Based on these contact width measurements, the calculated maximum force per particle varied from 2.3, 1.7, 1.1, and 0.5 μN for applied loads 100, 50, 30, and 10 N, respectively.…”

Section: Results and Discussionsupporting

confidence: 74%

“…The deformation area is consistent with the expected Hertz contact area for a glass tube with 6 mm outer diameter and 4 mm inner diameter pressing into an infinite glass plate. 48 Based on these contact width measurements, the calculated maximum force per particle varied from 2.3, 1.7, 1.1, and 0.5 μN for applied loads 100, 50, 30, and 10 N, respectively. The maximum applied pressure during the deformation was larger than the yield strength of bulk silver 55 MPa; 49 therefore, the forces we are using are sufficient (the small contact area allows this to be done at small forces).…”

Section: ■ Results and Discussionmentioning

confidence: 99%

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Tuning Localized Surface Plasmon Resonance Wavelengths of Silver Nanoparticles by Mechanical Deformation

et al. 2016

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We describe a simple technique to alter the shape of silver nanoparticles (AgNPs) by rolling a glass tube over them to mechanically compress them. The resulting shape change in turn induces a red-shift in the localized surface plasmon resonance (LSPR) scattering spectrum and exposes new surface area. The flattened particles were characterized by optical and electron microscopy, single nanoparticle scattering spectroscopy, and surface enhanced Raman spectroscopy (SERS). AFM and SEM images show that the AgNPs deform into discs; increasing the applied load from 0 to 100 N increases the AgNP diameter and decreases the height. This deformation caused a dramatic red shift in the nanoparticle scattering spectrum and also generated new surface area to which thiolated molecules could attach as evident from SERS measurements. The simple technique employed here requires no lithographic templates and has potential for rapid, reproducible, inexpensive and scalable tuning of nanoparticle shape, surface area, and resonance while preserving particle volume.

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Section: Results and Discussionsupporting

confidence: 74%

Section: ■ Results and Discussionmentioning

confidence: 99%

Tuning Localized Surface Plasmon Resonance Wavelengths of Silver Nanoparticles by Mechanical Deformation

et al. 2016

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“…The deformation parabolically increases after hollowness value over 30%, creating more stresses in the wall which leads to crack of the straw wall and crushing of its cross section. Due to thin wall section very less material is available to resist the force, so von Mises stress increases rapidly after 60% hollowness [23]. Consequently, the maximum crushing force decreases as a function of hollowness.…”

Section: Straw Crushing Forcementioning

confidence: 99%

“…Collagen consists of long protein molecules composed of naturally occurring amino acids that are linked in a specific sequence by covalent peptide bonds. Due to the spatial conformation of some amino acid groups (notably proline and hydroxyproline) and the many ionisable and polar functional groups in the protein chain, the individual chains form triple-stranded helical coils that are generally believed to be internally stabilized by hydrogen-bonding [22][23][24].…”

Section: Composites Preparationmentioning

confidence: 99%

Analysis of the Wheat Straw/Flax Fiber Reinforced Polymer Hybrid Composites

Messiry¹,

R²

2016

J Appl Mech Eng

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In the last decades, the agro wastes in manufacturing different types of composites found the increasing utilization. The world statistics of the Wheat and rice straw indicates that about 710 million metric tons of Wheat straw and 670 million tons of rice straw are produced each year as the agricultural waste, beside the other cereal and forest waste. Therefore, it causes a huge environmental impact and this problem is growing each year. The production of plastic composites from agro waste materials is receiving the substantial consideration currently. In this work, we suggest to use the Wheat straw in its whole shape instead of shredded one for forming the green composite. The hybrid composite was formed of Wheat straw, flax fiber, and jute fabric. This study targets at the mechanical properties of Wheat straw. The results indicate the possibility of manufacturing of the thin plates and shafts from such hybrid combinations after the increasing the crushing force of Wheat straw.

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“…There are constructive solutions that have adopted drilled or hollow steel rolling elements [16,17], but these are not intended for the construction of large-size bearings for wind turbines. A solution for determining the size of the hollow roller was described in [18]. The analysis has shown that the durability of hollow cylindrical roller bearings operating at the maximum allowable stress level can be substantially higher than the durability of solid roller bearings.…”

Section: Introductionmentioning

confidence: 99%

Research on Increasing the Performance of Wind Power Plants for Sustainable Development

2019

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A topical issue globally is the development and implementation of renewable energy sources for sustainable development. To meet current requirements, the research in this paper is directed towards finding solutions to increase the performance and efficiency of wind power plants by implementing innovative solutions for hollow roller bearings developed through the use of sustainable growth programs in the field of green energy. Another solution that has the effect of increasing wind power performance consists of the implementation of a new large-size lubrication system for large-size bearings in wind energy units, which will increase their durability by developing maintenance capabilities. In this research, we will explore the possibility of introducing an innovative automated lubrication system in hollow roller bearings. The main results of the research, the innovative constructive solutions, will lead to important savings by lowering wind farm maintenance costs, increasing the durability of large bearings, and increasing the energy efficiency and yield of the whole system. The expected impact of implementing the solutions found will mainly be in the field of sustainable growth and environmental development.

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Development of Graphical Solution to Determine Optimum Hollowness of Hollow Cylindrical Roller Bearing Using Elastic Finite Element Analysis

Cited by 4 publications

References 18 publications

Tuning Localized Surface Plasmon Resonance Wavelengths of Silver Nanoparticles by Mechanical Deformation

Tuning Localized Surface Plasmon Resonance Wavelengths of Silver Nanoparticles by Mechanical Deformation

Analysis of the Wheat Straw/Flax Fiber Reinforced Polymer Hybrid Composites

Research on Increasing the Performance of Wind Power Plants for Sustainable Development

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