Study on the Fire Resistance Test of Train Floor Structure by Using ANSYS

• Main Author: 許文宏
• Other Authors: 呂鴻猷
• Format: Others
• Language: zh-TW
• Published: 2010
• Online Access: http://ndltd.ncl.edu.tw/handle/87380803366700681582

碩士 === 明新科技大學 === 精密機電工程研究所 === 98 === The fire resistance of train floor structure is studied by using ANSYS in this research. The object of fire resistance test is the floor structure of the fourth car of commute train set, and following the code TRAS(M)-970296 ruled by Taiwan Railways Administration. ANSYS parametric design language (APDL) is used in the research in order to create finite element model quickly, apply loads and boundary conditions of thermal analysis correctly, and allowed to renew the material properties during transient solution procedure due to the advantage of parametric program. The results show that the maximum floor temperature is 85.59℃ and the average floor temperature is 53.49℃ which meet the requirement of the code. It also has been found that element size, the frequency of renewing coefficient of heat transfer and number of substeps of integration all affect the temperature convergent. As element size is decreased, frequency of renewing coefficient of heat transfer or number of substeps of integration is increased temperature converges to a lower value. However, it also increases the computing time due to increased nodes.