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Showing 1 to 13 of 13 for “"Helical springs."”.
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Large Deflections of Helical Springs
The problem analyzed is that of a helical spring subjected to end couples and forces which produce large deflections of the spring. These deflections are such that the angle of rotation of one end of the spring centerline with respect to the other end of the spring centerline exceeds the range …
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Contact Stresses in Dynamically Impacted Helical Springs
Made available in DSpace on 2014-12-14T14:42:10Z (GMT). No. of bitstreams: 1 7524429.pdf: 2446415 bytes, checksum: f4301dfc8ac331be154010761650a609 (MD5) Previous issue date: 1975
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Nonlinear Wave Propagation in Helical Springs by the Method of Characteristics and Finite-Element Method
Made available in DSpace on 2014-12-14T14:42:14Z (GMT). No. of bitstreams: 1 7804159.pdf: 3657121 bytes, checksum: 5824cc2fd849e0047c7f7189a22a5cd3 (MD5) Previous issue date: 1977
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Geometric and elastic properties and mechanical phase separation phenomena in self-assembling mesoscopic helical springs
Helical ribbons with pitch angles of either 11⁰ or 54⁰ self-assemble in a wide variety of quaternary surfactant-phospholipid/fatty acid-sterol-water systems. In all of the systems studied, the thermodynamically stable state for the sterol is plate like mono-hydrate crystals. However, the sterol is …
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Torsion in an incomplete tore: an approximate solution for the stress distribution in a circular ring sector under uniform torsion using energy methods
… closely approximates that in heavy close-coiled helical springs under axial tension or compression. Necessarily the spring helix angle must be small, which is the case in a close-coiled spring.
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The Development of Actuators for the Whole Skin Locomotion Robot
… design limits are established. In addition, a helical spring backbone design is considered and stiffness properties for general helical springs are determined. The contact of spring coils is included in the analysis and a coupled constitutive model is developed for the spring when coils are in …
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Mechanical behavior of nanostructured metallic films under compressive and shear loads
… thin films consisting of arrays of Cu and Ag helical springs. Rectangular areas of films were loaded in uniform compression and shear and the film properties were obtained through the load versus displacement response. The compressive stiffness of the nanostructured Cu films was measured to be …
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Influência clínica e tecidual do diazepam no periodonto de sustentação durante o movimento ortodôntico
… titanium molybdenum alloy wire formed into helical springs delivering 25g/f. lt was verified that diazepam affected bone remodeling, increasing in 70% the extension of the dental movement, but with root resorption. Marked tissue alterations characterized by large osteoclasts, macrophagic …
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Compliant Mechanisms to Perform Bearing and Spring Function in High Precision Applications
… of traditional elements such as bearings and springs is limited. The backlash of bearings also limits their usefulness in applications where high precision and repeatability are needed. At small scales and for high precision applications, alternative, non-traditional elements are needed.</p> …
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A Variable Stiffness Energy Dissipation Device for Vibration Control of Steel Frames
… frequent earthquakes. Composed of a series of helical springs with a specific initial inclination angle placed between an inner and an outer tube, snap-through and snap-back occur in the springs when they are pushed by stationary bushings mounted on a rigid bar as the bar slides inside the …
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Manipulation and mechanics of thin elastic objects
… closure of the set of all stable equilibria with helical centerlines is star-convex, and this property is used to compute and visualize the boundary between stable and unstable helical rods. Finally, two applications of geometric optimal control theory to the analysis of constitutive equations for …
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Design and validation of new testing apparatus for testing helical compression springs under combined axial, shear, torsion, and bending loads.
Helical compression springs are normally used to provide a linear force response to compressive displacement. However, compression springs can be used to provide lateral force and rotational torque responses to lateral and angular displacements. The purpose of this thesis is to take advantage of …