Sensitivity Analysis and Optimization Design of Brake System Pipeline Clamp Positions
Journal Title: Urban Mass Transit - Year 2024, Vol 27, Issue 5
Abstract
Objective During the design phase of brake system pipeline for rail vehicles, optimizing the support positions of clamps can effectively avoid the excitation frequency of the vehicle carbody and reduce the risk of pipeline vibration and loosening. Therefore, it is necessary to study optimization solutions for clamp positions. Method Taking a segment of the brake system pipeline for urban rail transit vehicles as example, a finite element models of the vehicle carbody and brake system pipeline is created to obtain their natural frequencies. Using sensitivity analysis, with clamp positions as design variables, four clamp position parameters that significantly affect the natural frequencies of the brake system pipeline are identified. Meanwhile, an optimization model is established with the goal of adjusting the natural frequencies of the brake system pipeline away from the natural frequency range of the vehicle body. Genetic algorithm is then applied to optimize the four clamp position parameters. Result & Conclusion Through optimization design, the natural frequencies of the brake system pipeline are adjusted. Comparing the effects of different optimization schemes, it is found that optimization scheme 2 can effectively keep the brake system pipeline away from the natural frequency range of the vehicle carbody, achieving the desired vibration avoidance effect.
Authors and Affiliations
Haihao GU, Yanli YAN, Yi ZHANG
Keywords
Related Articles
- EP ID EP735643
- DOI 10.16037/j.1007-869x.2024.05.040
- Views 53
- Downloads 0
Key Technology and Application Effect of High Precision Prefabricated Track for Urban Rail Transit
[Objective] In order to thoroughly implement the national strategy of building China with a strong transportation network and the low-carbon assembly and construction concepts such as standardization, intelligence and re...
Statistical Analysis of Beijing Subway Thin-walled Diaphragm Wall Foundation Pit Deformation Law
Objective The thickness of diaphragm walls significantly affects the amount and mode of foundation pit deformation, thin-walled diaphragm walls are especially sensitive to excavation and edge loads of foundation pit. The...
Development of Automatic Calculation Program for Passenger Flow Assignment in Urban Rail Transit Network Based on VISUM
[Objective] In view of the much repetitive work in the calculation process of passenger flow assignment in urban rail transit network, an automatic calculation program is developed on the basis of the research on the pas...
Optimization of Train Operation Organization during Metro Catenary Collapse
[Objective] In the event of a collapsed non-redundant rigid catenary, it is essential to adjust train operation organization according to different collapse scenarios, minimizing the impact of the incident and reducing p...
Application of Impulse Response Characteristics in Rail-ground Transition Resistance Measurement
Objective The stray current harm in urban rail transit lines is increasingly non-ignorable. Stray current is not easy to be detected, and the amount of the rail-ground transition resistance is a crucial factor affecting...