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Showing 1 to 20 of 20 for “"spur gear"”.
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Analysis of spur gear teeth for static deflections
The problem of the deflection of spur gear teeth has been previously investigated analytically by several authors. Two of the papers dealing with this topic were written by Timoshenko and Baud (18)t and Marin and Shenk (11). Both papers employ the cantilever beam approach in which the spur gear …
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The measurement of static deflections in spur gear teeth
The problem of measuring deflection of spur gear teeth has been considered by several investigators. Attia (11) in 1959 measured tooth deflections using an unbonded strain gage as an extensometer. The combined deflection of the gear tooth and the gear body was measured. More than one tooth-pair was …
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An investigation of the dynamic loads in spur-gear teeth
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1962.
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A finite element analysis of pinion shaped spur gear teeth
An analysis of the effects of gear shaping with a pinion cutter upon the geometry and root stresses in external spur gears using the finite element method is given. The models analyzed have the shape of a ring with three teeth. The middle tooth is loaded and load sharing has been assumed. …
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A photoelastic study of stress distribution in a spur gear tooth
… of Results”, the sub-surface stresses in a gear tooth decrease very rapidly with its depth. This result serves as a supporting evidence to the common practice of case-hardening the gear teeth. Previously this was done according to the mechanical properties of the gear materials, but without …
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Static and dynamic load, stress, and deflection cycles in spur-gear systems
Thesis (Sc. D.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1958.
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Stress concentrations in undercut spur gear teeth via the finite element method
… on the stress concentration factor for undercut gears using the finite element method is presented. The models used are in the shape of a whole gear with three teeth. The middle tooth is loaded assuming single-tooth contact. Thirty seven finite element models were used to compute stress …
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A finite element study of bending stress variation in meshed spur gear pairs
… of the bending stresses in a pair of meshed spur gears using the finite element method is presented. The models analyzed were in the shape of a circular gear with five teeth or a five-tooth rack. A unit torque (1 lbf-ft) was applied as the form of nodal forces on the nodes around the bore …
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Maximum torque of combination threats for spur gear based on AGMA and JGMA standards
… to investigate the transformation curve of gearing safety. Two types of tooth failures are known to happen to spur gears. There are tooth bending failure (breakage) and tooth surface pitting failure. The focus of this study however will be on the JGMA and AGMA standards of gearing. Different …
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Testing and analysis of a novel spur gear design using double integral bearing raceways
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1996.
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The Influence of Axial Vibrations Upon The Energy Losses and Efficiency of Spur Gear Systems
Made available in DSpace on 2014-12-09T17:13:49Z (GMT). No. of bitstreams: 1 7013406.pdf: 11434317 bytes, checksum: 5a342083acb53534d7355aa578ff26ea (MD5) Previous issue date: 1969
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An Investigation into the Impact of Random Spacing Errors on Static Transmission Error and Root Stresses of Spur Gear Pairs
… motion transmission error and root stresses of spur gear pairs are performed. A test setup with dedicated instrumentation for the measurement of the static transmission error and root stresses is devised. A number of experiments are performed with gears having deterministic spacing errors (at …
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Experiment and Simulation of the Acoustic Signature of Fatigued-Cracked Gears in a Two-Stage Gearbox
… development of a health monitoring system for gearbox transmissions. This was accomplished by developing and understanding a two-stage gearbox computer model that emulates an actual gearbox test rig. The computer model contains actual gearbox geometry, flexible shafts, bearings, gear contact …
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Nonlinear Dynamics and Vibration of Gear and Bearing Systems using A Finite Element/Contact Mechanics Model and A Hybrid Analytical-Computational Model
… work investigates the dynamics and vibration in gear systems, including spur and helical gear pairs, idler gear trains, and planetary gears. The spur gear pairs are analyzed using a finite element/contact mechanics (FE/CM) model. A hybrid analytical-computational (HAC) model is proposed for …
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Interactive 3-D computer-aided design of external spur gears cut by a hob
… presented which enhances the design of external spur gears cut by a hob. The program code calculates the geometry of an involute spur gear with trochoidal fillets and then uses the Graphical Kernel System (GKS), CADAM, and MOVIE.BYU to represent and display the gear. GKS, an international …
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An analytical study and computer analysis of three-dimensional, steady-state vibration of multishaft geared-rotor systems
… harmonic, steady-state response calculations on geared-rotor systems. The full six degrees-of-freedom method includes physical branching to accommodate multiple shafting and frequency branching to simultaneously accommodate multiple frequencies and their interdependence resulting from …
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Vibration-Based Health Monitoring of Multiple-Stage Gear Train and Differential Planetary Transmission Involving Teeth Damage and Backlash Nonlinearity
… strategies for on-line condition monitoring of gear transmission systems. The study divides the thesis into three sections. First of all, the local stresses created by a root fatigue crack on a pinion spur gear are analyzed using a quasi-static finite element model and non-linear contact …
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The Effect of Suspension on Parametric Stability and Bifurcation of Geared Systems in Permanent Contact Regime
Gears are known to be one of the most common mechanical parts used in rotary machinery and power transmission systems. Originally, gears are designed to remain in permanent contact regime, where the teeth in mesh do not separate during operation. But because of the clearance between the teeth in …
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In situ blocked force measurement in gearboxes with potential application for condition monitoring
The use of gearboxes for power transfer is widespread throughout industry. However, machines today are operating at higher speeds than ever before and gear failures such as wear or tooth breakage is serious and legitimate concerns. Incipient fault detection in gears has thus become the subject of …
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Fiber Orientation Prediction and Strength Evaluation of Composite Spur Gears Reinforced by Discontinuous Fiber
… sensitive structures like wings of aero plane or gear. Amount of fiber, fiber type, and size of the fiber and the orientation of reinforcing fibers directly influence the mechanical properties of polymer composites like elastic modulus, strength, thermal expansion, thermal conductivity, and …