uncleflo
Registered since September 28th, 2017
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Tag selected: stiffness.
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BlueSolar Panels - Victron Energy
Saved by uncleflo on December 20th, 2019.
Low voltage-temperature coefficient enhances high-temperature operation; Exceptional low-light performance and high sensitivity to light across the entire solar spectrum; 25-Year limited warranty on power output and performance; 5-Year Limited warranty on materials and workmanship; Sealed, waterproof, multifunctional junction box gives high level of safety; High performance bypass diodes minimize the power drop caused by shade; Advanced EVA (Ethylene Vinyl Acetate) encapsulation system with triple-layer back sheet meets the most stringent safety requirements for high-voltage operation; A sturdy, anodized aluminium frame allows modules to be easily roof-mounted with a variety of standard mounting systems; Highest quality, high-transmission tempered glass provides enhanced stiffness and impact resistance; Pre wired quick-connect system with PV-ST01 connectors.
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Lionheart | Claasen Shipyards
Saved by uncleflo on February 23rd, 2019.
Lionheart is designed for cruising as well as racing, and is therefore built to MCA. No expense has been spared to ensure that she is competitive on the race course, and her performance has been optimised by a design that incorporates research done on previous J-class yachts. Lionheart’s hull is built in high tensile Alustar plating and extrusion materials, and she employs longitudinal stringers to ensure maximum stiffness. Tremendous 17-metre overhangs lend Lionheart a striking appearance. She features two deckhouses and two cockpits, with one of each reserved for the owner, and the owners’ cockpit linked to their suite for maximum privacy.
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Objectives_template
Saved by uncleflo on April 4th, 2015.
Now, let us assume that we have measured all the engineering constants of an orthotropic material along principal directions. With these engineering constants we know the relation between the strain and stress components as given in Equation (3.42) and Equation (3.43). Thus, it is easy to see that we can relate the strain components to stress components through compliance matrix. Let us recall from previous lecture the stiffness matrix for orthotropic material (Equation (3.26)). The inverse of this matrix (compliance) will have the same form as the stiffness matrix. Thus, we write the relationship between strain and stress components using compliance matrix as follows
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Exceptionally high Young's modulus observed for individual carbon nanotubes
Saved by uncleflo on April 4th, 2015.
CARBON nanotubes are predicted to have interesting mechanical properties—in particular, high stiffness and axial strength—as a result of their seamless cylindrical graphitic structure1–5. Their mechanical properties have so far eluded direct measurement, however, because of the very small dimensions of nanotubes. Here we estimate the Young's modulus of isolated nanotubes by measuring, in the transmission electron microscope, the amplitude of their intrinsic thermal vibrations. We find that carbon nanotubes have exceptionally high Young's moduli, in the terapascal (TPa) range. Their high stiffness, coupled with their low density, implies that nanotubes might be useful as nanoscale fibres in strong, lightweight composite materials.
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Bifurcation buckling, Stability and Buckling
Saved by uncleflo on September 2nd, 2014.
Now consider the case of compressive loads and the instability they can cause. Consider only static instabilities (static loading as opposed to dynamic loading [e.g., flutter]) "A system becomes unstable when a negative stiffness overcomes the natural stiffness of the structure." Review some of the mathematical concepts. Limit initial discussions to columns.
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