Bogie Frame Assessment: A Multibody Dynamic Approach
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Abstract
Developing a new bogie frame design requires a complete design process to ensure the safe operation of the running vehicles. EN 13749 specifies the procedure from the initial design phase to the final verified on-track test. Due to the current power of computational hardware and software, the process can be performed and crossed over among phases seamlessly by integrating finite element analysis capability within multibody dynamic software. If design engineers perform the analysis entirely on computers before manufacturing the prototype, they can reduce product development time, which is the crucial benefit of optimizing their design. This paper presents the discrepancy of resulting stress from the calculation by the code with those from simulated test rigs within ADAMS. Furthermore, fatigue analysis software has demonstrated its effectiveness in evaluating fatigue life, particularly when considering the mean stress effect. The results can assist test engineers in locating hot spot positions for strain monitoring and further adjusting design procedures, especially for specific components such as side frames or cross beams.
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