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A Durability Study on Automotive Disk Brake by Shape through Simulation Analysis

Affiliations

  • Department of Metal mold Design Engineering, Kongju National University, 1223-24, Cheonan Daero, Seobuk-gu, Cheonan-si - 31080, Chungnam, Korea, Republic of
  • Department of Mechanical and Automotive Engineering, Kongju National University, 1223-24, Cheonan Daero, Seobuk-gu, Cheonan-si - 31080, Chungnam, 31080, Korea, Republic of

Abstract


Objectives: As traffic accidents have been increased at driving, this paper aims at obtaining the information for the safe design of disk brake in order to prevent and reduce these accidents. Methods/Statistical Analysis: The brake system among these devices is the most important element in automobiles capable of preventing or reducing traffic accidents. For such brake system, disk brakes are currently being used most universally. However, at driving on harsh environments such as high temperature and pressure due to sliding friction, the sturdy durability is an essential requirement. Thus, the simulation structural analyses were performed by the finite element analysis in this study. Findings: The deformation, equivalent stress, fatigue life and durability of each disk brake model are found through this study result. By comparing with one automotive disk brake model, the maximum equivalent stress becomes larger and the maximum fatigue life becomes shorter at the automotive disk brake model of another shape. So, the additional studies such as the design change or the reinforcement are considered necessary at the automotive disk brake model of another shape. In the cases of one car disk brake model and car disk brake model of another shape, the maximum fatigue lives was shown to be about 1,171,000 cycles and 336,930 cycles respectively. The damage ratio in the case of the car disk brake model of another shape was shown to be about 6.75% as the maximum, whereas the damage ratio was shown to be about 3.16% as the maximum in the case of one car disk brake model, affirming that durability for the disk brake model of another shape was vulnerable. Improvements/Applications: The data derived though this study is thought to be utilized for the design of the disk brake having an improved durability as compared with one car disk brakes.

Keywords

Automotive Disk Brake, Durability, Equivalent Stress, Fatigue Life, Shape, Total Deformation.

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