Investigation Of Brake Squeal/Self Induced Vibrations
| dc.contributor.author | Yousif Mohammed, Ammar Abdul Majeed | |
| dc.date.accessioned | 2019-10-07T07:18:13Z | |
| dc.date.available | 2019-10-07T07:18:13Z | |
| dc.date.issued | 2011-01 | |
| dc.description.abstract | Brake noise associates with the dynamic instability of the system and is categorized depending on the frequency to high noise (squeal) and low noise (groan). At low frequencies (0-500kHz) a stick-slip model was used to present the disc-pad system which is solved by using a numerical method ODE45 with MATLAB software. The stick-slip model was a lumped mass method with one degree of freedom. Solving stick-slip model enables us to find out the friction-relative velocity curve which is used inside FE ABAQUS Software to find out the effect of kinetic and static friction on response of the system. The results showed that increasing the mass, damping and friction coefficient can damp the noise while increase the stiffness increases the noise of the system. The contact angel between beam/disc has significant effect on vibration amplitude so as the stability which was responsible about the separation of the surfaces. Another analysis was done with high frequencies (1-12) kHz, a plate with rotating disc system. ANSYS Software had been used to analyze the effect of changing the mechanical parameter on the system stability. Matrix27 was used to represent the contact element between the plate and the disc. The result showed only three unstable modes due to the effect of changing the contact stiffness while two unstable modes due to the effect of changing the friction coefficient. The contact stiffness generates the sixth unstable diametral mode while the friction coefficient generated the third diametral mode. | en_US |
| dc.identifier.uri | http://hdl.handle.net/123456789/8958 | |
| dc.language.iso | en | en_US |
| dc.publisher | Universiti Sains Malaysia | en_US |
| dc.subject | Brake | en_US |
| dc.subject | Squeal/Self Induced | en_US |
| dc.title | Investigation Of Brake Squeal/Self Induced Vibrations | en_US |
| dc.type | Thesis | en_US |
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