Rapid Evaluation Method of Adhesive Strength for EMU Train's Side-window Based on Sub-model Technology

doi:10.3901/JME.2019.12.189

Abstract

Abstract: According to the structure characteristics of EMU train, a rapid evaluation method of adhesive strength is presented based on sub-model technology. The global finite element (FE) model of body structure is built with big size elements, and the sub-model of side-window is built with small size elements. The displacement boundary condition of sub-model is extracted through interpolation method of triangle area, and then the stress of side-window adhesive structure is obtained by strength analysis of sub-model. The quadratic stress criterion is established by experimental tests of single lap joints and butt joints to evaluate the adhesive strength of side-window. Furthermore, the process of evaluation method is implemented by a FORTRAN program. Finally, the rapid evaluation method is compared with the traditional method of overall refined model. Results showed that the safety coefficients calculated by the rapid evaluation method are slightly lower than that by the traditional method, but the computing time of rapid evaluation method was 1/17 of traditional method. It is concluded that the rapid evaluation method possess is reliable and efficient, which lay the foundation of optimization design for EMU train's adhesive structure.

Key words: 650℃, Fatigue, GH4169, Grain size, room temperature, Small crack, adhesive, EMU train, side-window, strength evaluation, sub-model technology

CLC Number:

U266

QIN Guofeng, FAN Yisa, NA Jingxin, MU Wenlong, TAN Wei. Rapid Evaluation Method of Adhesive Strength for EMU Train's Side-window Based on Sub-model Technology[J]. Journal of Mechanical Engineering, 2019, 55(12): 189-195.

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