Study Of The Static Strength Analysis Of SS_7E Electric Locomotive Bogie Frame

With the wide application of high speed electric locomotive, study shows that the bogie affects the curving performance, and its all parameter values can also affect the running stability, safety and comfort directly. As the main bearing components in the bogie, so the bogie frame becomes a key components affect engine performance. It is not only used to support body, motor and all kinds of spare parts, but also to pass the horizontal, vertical and longitudinal forces. It has the direct impact on the performance of reliability. So it needs to be guaranteed the accuracy of the interface shape and size and other components, and to satisfy the requirement of the locomotive dynamics performance and strength. These factors make its architecture design become one of the key issues in the design of locomotive, and full analysis of truck frame is very necessary.This paper summarizes the development of the electric locomotive bogie frame domestic and abroad, and analyses the static strength analysis and modal analysis of SS_7E electric locomotive bogie frame. The first step of the whole analysis process was to establish the three-dimensional entity model of SS_7E electric locomotive bogie frame by using three-dimensional modeling software SolidWorks 2013. Then, conducts the force analysis and constraints analysis of bogie frame under the corresponding working conditions, and then,establishes the mechanical model of bogie frame. Finally, accomplishes the static strength analysis and modal analysis of three-dimensional bogie frame model by using the corresponding analysis function in ANSYS14.0 Workbench which is the new analysis platform of large-scale finite element analysis software ANSYS, so as to obtain the stress value and it’s distribution of bogie frame which under static loading condition. The different modal frequency values at low order and the corresponding typical vibration modes of SS_7E bogie frame has been also obtained, and accomplishes the evaluation the modal parameters of typical vibration.Conclusion: The stress values calculated by using two methods of elastic constraints and a given displacement are far less than the allowable stress 170 MPa of material Q345 E, and at the same time is less than the yield strength 345 MPa, which explains that the SS_7E electric locomotive bogie frame can meet the requirements of the static strength under static load conditions. Through modal analysis of SS_7E Electric Locomotive Bogie Frame, and analyzes several typical modes. According to the structure stress results, concludes that the SS_7E electric locomotive bogie frame can meet the requirements of locomotive speed to the set speed, and provides a certain reference for the further improvement of the bogie frame of the locomotive, and at the same time provides a basis for further multi-objective and global optimization.