by Naval Postgraduate School, Available from National Technical Information Service in Monterey, Calif, Springfield, Va .
Written in English
Spur Gear Pumps. The spur gear pump, shown in Figure , consists of two meshed gears, which revolve in a housing. The drive gear in the illustration is turned by a drive shaft, which is attached to the power source. The clearances between the gear teeth as they mesh and between the teeth and the pump housing are very small. dynamic load will decrease gear noise. increase effi- ciency, improve pitting fatigue life, and help prevent gear tooth fracture (). practice to reduce dynamic load for improved perform- ance of a spur gear t practice in gear design is to modify the tooth profile based on the maximum applied torque, also called design Size: KB. A method to determine dynamic loads on spur gear teeth and on bearings Article in Journal of Sound and Vibration (5) November with Reads How we measure 'reads'. dynamic load - Search Results Articles About dynamic load. Articles are sorted by RELEVANCE. Sort by Date.. 1 Dynamic Loads in Parallel Shaft Transmissions - Part 2 (May/June ). Solutions to the governing equations of a spur gear transmission model, developed in a previous article are presented.
DYNAMIC LOADS ON SPUR GEAR TEETH by BENJAMIN HSI-LU YEH , Taiwan University, China, A THESIS SUBMITTED IN PARTIAL FULFILMENT OF THE REQUIREMENT FOR THE DEGREE OF MASTER OF APPLIED SCIENCE In the Department of MECHANICAL ENGINEERING We accept this thesis as conforming to the required standard THE UNIVERSITY OF BRITISH COLUMBIA July, Author: Benjamin Hsi-Lu Yeh. Spur gears or straight-cut gears are the simplest type of gear. They consist of a cylinder or disk with teeth projecting radially. Though the teeth are not straight-sided (but usually of special form to achieve a constant drive ratio, mainly involute but less commonly cycloidal), the edge of each tooth is straight and aligned parallel to the axis of rotation. Different materials used for gear manufacturing are: 1. Steel 2. Cast iron 3. Aluminium 4. Bakelite 5. Nylon 6. Plastics 7. Bronze 8. Phenolic Basic terms of spur gear Module:Ratio of diameter to number of teeth. m= d/n Face width:Width along the contact surface between the gears. Tooth thickness:Thickness of the tooth along the pitch Size: KB. Thus spur gear teeth are subjected to fluctuating stresses and lead to fatigue failure of gear tooth may lead to danger. Therefore, it is necessary to perform the dynamic analysis of spur gear. Load Distribution Load distribution on gear tooth In order to conduct a dynamic stress analysis the loads have to be evaluated. File Size: KB.
Analysis of Spur Gear using ANSYS The two dimensional models Fatigue or yielding of a gear tooth due to excessive bending stress is two important gear design considerations. When meshing the teeth in ANSYS, if ―Smart size is used the number of elements near the roots of the teeth are automatically are much greater than in other by: 1. Hii ther! Gears are designed solely based on the type, effect and balancing of forces like- * Tangential force Ft * Radial force Fr Ft induces a bending stress which tends to break the tooth. Fr also acts but it's magnitude is quite less than. Dynamic analysis of spur gear teeth Fig. Transient response for moving load with different speeds. the load moves down the profile of the active tooth. However, in the root zone the effect of loading is also felt in the adjacent teeth. REFERENCES 1. V. Ramamurti and L. S. Gupta, Dynamic stress analysis of spur gear by: On the Modelling of Spur and Helical Gear Dynamic Behaviour 79 12, which are small angles associated with deflections superimposed on rigid-body rotations 11 0 t d (pinion) and 22 0 t d (gear).Following Velex and Maatar (), screws of infinitesimal displacements are introduced whose co-ordinates for solid k.