PSI - Issue 22

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Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2019) 000 – 000 Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2019) 000 – 000

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Procedia Structural Integrity 22 (2019) 102–109

© 2019 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/) Peer-review under responsibility of the First International Symposium on Risk and Safety of Complex Structures and Components organizers © 2019 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/) Peer-review under responsibility of the First International Symposium on Risk and Safety of Complex Structures and Components organizers de ail. The research res l s are sh wn that there are certain limitations in single-disciplinary fatigue design and analysis. In order t effectively solve the complex engineering structure failure problem, it is necessary to fully consider the vibration characteristics of the entire vehicle structure. Through the multi-disciplinary fatigue design and optimization method of high-speed train structural components, the safety and structural integ ity of key structural componen s of rail t ansit can be better guarante d. © 2019 The Autho s. Publ shed by Elsev er B.V. Th s is an open access article u er the CC BY-NC-ND license (http://cr a ivecommons.org/licenses/by-nc-nd/4.0/) Peer-review under responsibility of the First International Symposium on Risk and Safety of Complex Structures and Components organizers First International Symposium on Risk and Safety of Complex Structures and Components Research on multidisciplinary fatigue optimization design method in structural design of high speed train B.R. Miao a * , Y.X. Luo a , Y.J. Qiu a , Q.M. Peng a , C.Y.Jiang a , Z.K. Yang a Abstract Aiming at the shortcomings of single-discipline fatigue design and life prediction optimization design method for high-speed trains, considering the characteristics of structural design integrity, a durability analysis method for key structural components based on multi-disciplinary fatigue optimization design is proposed. According to the characteristics of vibration fatigue and structural failure of key structural components of high-speed trains, the multi-disciplinary fatigue design of carbody components is carried out from the perspectives of materials, loads and structural design. In the research process, qualitative and quantitative analysis and comparison of multi-objective optimization analysis (MOO) and multi-disciplinary optimization (MDO) processes were carried out. At the same time, considering the actual example, considering the vibration characteristics of the vehicle structure, the typical load spectrum and the complex material characteristics, the failure characteristics of the structural components are analyzed in detail. The research results are shown that there are certain limitations in single-disciplinary fatigue design and analysis. In order to effectively solve the complex engineering structure failure problem, it is necessary to fully consider the vibration characteristics of the entire vehicle structure. Through the multi-disciplinary fatigue design and optimization method of high-speed train structural components, the safety and structural integrity of key structural components of rail transit can be better guaranteed. First International Symposium on Risk and Safety of Complex Structures and Components Research on multidisciplinary fatigue optimization design method in structural design of high speed train B.R. Mia a * , Y.X. Lu a , Y.J. Qi a , Q.M. Peng a , C.Y.Jian a , Z.K. Yang a a State Key Laboratory of Traction Power, Southwest Jiaotong University, Chengdu 610031, China bstract Aim ng at the shortcomings of s ngle-discipli e fatigue design an life predi tion optim zation design me hod for high-speed trains, considering the characteristics of structural design integri y, a durabilit nalysis method fo key structural components based on multi-discipl nary fatigu optimiz tion design is propos d. According to the aracteri tics of vibratio fatigue and structural failure of key structural compon nts of high-speed tr ins, the multi-disciplinary fatigue design of carbody components i carried out f om the persp ctives of materials, loads nd structura design. In the resea ch process, qual tative and quanti ative analysis and c mparison of multi-objectiv optimiz tion nalys (MOO) nd multi-disciplinary optimization (MDO) proce ses were carried ou . At t same time, con id ring the actual xample, consider ng the vibration characteristics of the v hicle structure, the typical l ad spectrum and material characteristics, th failur charact ristics of the structural components are nalyzed in a State Key Laboratory of Traction Power, Southwest Jiaotong University, Chengdu 610031, China Keywords: Multidisciplinary optimization; Multi-body dynamics; Finite element method; Multi-objective optimization; high-speed train.

Keywords: Multidisciplinary optimization; Multi-body dynamics; Finite element method; Multi-objective optimization; high-speed train.

* Corresponding author. Tel.: +86-28-87600868; fax: +86-28-87600868. E-mail address: brmiao@home.swjtu.edu.cn

2452-3216 © 2019 The Authors. Published by Elsevier B.V.This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/) Peer-review statement: Peer-review under responsibility of the First International Symposium on Risk and Safety of Complex Structures and Components organizers 2452-3216 © 2019 The Authors. Published by Elsevier B.V.This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/) Peer-review statement: Peer-review under responsibility of the First International Symposium on Risk and Safety of Complex Structures and Components organizers * Corresponding author. Tel.: +86-28-87600868; fax: +86-28-87600868. E mail address: brmiao@home.swjtu.edu.cn

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