Date of Award
1-1-2015
Document Type
Thesis
Degree Name
M.S.
Department
Mechanical Engineering
First Advisor
Yun-Bo Yi, Ph.D.
Keywords
Brake discs, Clutch discs, Finite element method, Friction layer, Temperature distribution, Thermal buckling
Abstract
Thermal buckling behavior of automotive clutch and brake discs is studied by making the use of finite element method. It is found that the temperature distribution along the radius and the thickness affects the critical buckling load considerably. The results indicate that a monotonic temperature profile leads to a coning mode with the highest temperature located at the inner radius. Whereas a temperature profile with the maximum temperature located in the middle leads to a dominant non-axisymmetric buckling mode, which results in a much higher buckling temperature. A periodic variation of temperature cannot lead to buckling. The temperature along the thickness can be simplified by the mean temperature method in the single material model. The thermal buckling analysis of friction discs with friction material layer, cone angle geometry and fixed teeth boundary conditions are also studied in detail. The angular geometry and the fixed teeth can improve the buckling temperature significantly. Young’s Modulus has no effect when single material is applied in the free or restricted conditions. Several equations are derived to validate the result. Young’s modulus ratio is a useful factor when the clutch has several material layers. The research findings from this paper are useful for automotive clutch and brake discs design against structural instability induced by thermal buckling.
Publication Statement
Copyright is held by the author. User is responsible for all copyright compliance.
Recommended Citation
Yang, Huizhou, "Finite Element Analysis of Thermal Buckling in Automotive Clutch and Brake Discs" (2015). Electronic Theses and Dissertations. 1056.
https://digitalcommons.du.edu/etd/1056
Provenance
Received from ProQuest
Rights holder
Huizhou Yang
File size
108 p.
Copyright date
2015
File format
application/pdf
Language
en
Discipline
Mechanical Engineering