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spur gears analysis

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by

Dmitry Savchenko

on 29 April 2010

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Transcript of spur gears analysis

MECHANICAL FACULTY
DEPARTMENT OF FOREIGN LANGUAGES #2
SCIENTIFIC ADVISER
A.N. LES
STUDENT OF 5-MMAG GROUP
D. SAVCHENKO
PROUDLY PRESENT KHARKIV NATIONAL
AUTOMOBILE AND HIGHWAY
UNIVERSITY
STATIC AND DYNAMIC ANALYSIS
OF
HIGH CONTACT RATIO
SPUR GEAR DRIVE
USING
FINITE ELEMENT ANALYSIS
THE MAIN TASKS OF THE RESEARCHES ARE:
TO DEVELOP MODELS OF CONTACT ELEMENTS
TO CALCULATE CONTACT STRESSES USING ANSYS
TO COMPARE RESULTS WITH HERTZIAN THEORY
TO GENERATE THE SPUR GEAR TEETH PROFILE
TO PREDICT THE EFFECT OF GEAR BENDING USING A 3D AND 2D MODEL
TO COMPARE RESULTS WITH THOSE OF
LEWIS EQUATION

RECTANGULAR SHAPED ELEMENTS
WERE GENERATED
NEAR CONTACT AREAS NORMAL CONTACT STRESSES
ALONG THE CONTACT SURFACE
DISTRIBUTIONS OF THE CONTACT STRESS
ALONG THE CONTACT AREA
MAGNITUDE DIRECTLY FROM ANSYS
ORTHOGONAL SHEAR STRESS MAGNITUDES
MAXIMUM SHEAR STRESS FROM ANSYS
VON MISES STRESSES IN SPUR GEARS FROM ANSYS
DISTRIBUTION OF CONTACT STRESSES
BETWEEN TWO TEETH FEM MODEL OF THE GEAR TOOTH PAIR IN CONTACT
CONTACT STRESS ALONG CONTACT AREAS
VON MISES STRESSES
WITH 28 TEETH
ON THE
ROOT OF TOOTH
TWO DIMENSION
TOOTH FROM
A FEM MODEL
WITH 28 TEETH
FEM 3D
BENDING MODEL
WITH MESHING
VON MISES STRESSES
WITH 28 TEETH ON THE
ROOT OF TOOTH
EFFECTIVE METHODS TO ESTIMATE:
CONCLUSIONS
THE TOOTH CONTACT STRESS
(using a 2D contact stress model)
THE ROOT BENDING STRESSES
(using 2D and 3D FEA model)
ARE PROPOSED
THE VALUES OBTAINED FROM FINITE ELEMENT ANALYSIS
OF THE GEARS CONFIRM WITH THE ABOVE RESULTS
LANGUAGE ADVISER
N.S. SKRYPNYK
Full transcript