Effects of Brass (Cu3Zn2) as High Thermal Expansion Material on Shrink Disc Performance During High Thermal Loading

3rd International Conference on Mechanical, Manufacturing and Process Plant Engineering

机械制造;工业技术

Mazlan, M.I.S.^1 ; Mohd, S.A.^1 ; Bahar, N.D.^1 ; Aziz, S.A.A.^1

Universiti Teknologi Malaysia, Malaysia-Japan International Institute of Technology, Department of Mechanical Precision Engineering, Ikohza Vehicle System Engineering, Jalan Sultan Yahya Petra, Kuala Lumpur

54100, Malaysia^1

关键词: Contact areas;    Contact pressures;    shaft and shaft sleeve;    Shrink disc;    Thermal loadings;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/328/1/012024/pdf
DOI  :  10.1088/1757-899X/328/1/012024

学科分类：工业工程学

来源: IOP

【 摘 要 】

This research work is focused on shrink disc operation at high temperature. Geometrical and material design selections have been done by taking into consideration the existing shrink disc operating at high temperature condition. The existing shrink disc confronted slip between shaft and shaft sleeve during thermal loading condition. The assessment has been obtained through virtual experiment by using Finite Element Analysis (FEA) -Thermal Transient Stress for 900 seconds with 300 °C of thermal loading. This investigation consists of the current and improved version of shrink disc, where identical geometries and material properties were utilized. High Thermal Expansion (HTE) material has been introduced to overcome the current design of the shrink disc. Brass (Cu3Zn2) has been selected as the HTE material in the improved shrink disc design due to its high thermal expansion properties. The HTE has shown a significant improvement on the total contact area and contact pressure on the shaft and the shaft sleeve. The improved shrink disc embedded with HTE during thermal loading exhibit a minimum of 1244.1 mm2of the total area on shaft and shaft sleeve which uninfluenced the total contact area at normal condition which is 1254.3 mm2. Meanwhile, the total pressure of improved shrink disc had an increment of 108.1 MPa while existing shrink disc total pressure has lost 17.2 MPa during thermal loading.