High-speed Train Seat Dynamic Comfort Parameters And Evaluation Method

With the continuous development of railway technology innovation, high-speed trains in the railway traffic has been rapid development, At the same time, high-speed train passengers ride comfort increasingly high demand, the train ride comfort more and more people’s attention. Passenger seat is carrying tools directly on the human body play a supporting role and buffer body vibration, so the impact of seat comfort is an important part. High-speed train operation environment is complex, how to improve the complex vibration environments who chairs dynamic comfort, improved ride comfort and dynamic experience becomes a very important issue.For people on the train-chair of the dynamic characteristics of lagging behind the status quo, this paper first car-person-seating systems to establish a seven degrees of freedom coupled vibration model. In this model, using 350km/h high-speed train floor spectrum as input, through Matlab simulation solving human response; through displacement transfer rate, depending on the quality, mechanical impedance formula to calculate body dynamics parameters. The obtained parameters are optimized to obtain the best stiffness and damping ratio, from the best stiffness, damping ratio of an ordinary passenger seat and the stiffness and damping in the same environment for dynamic feature comparison, the results show that using the best stiffness, damping ratio of the best dynamic characteristics of a seat, can improve the comfort of high-speed trains.Designed a person-chair system dynamics experimental program experimentally measured head, buttocks response acceleration, seat chair surface velocity response, seat chair surface excitation force, calculated using the experimentally measured displacement data transfer rate, depending on the quality of mechanical impedance dynamic characteristic parameters of human experiments, through the goodness of fit formula to compare theoretical calculations and experimental testing of people-chair system dynamics to prove the theoretical value and the actual situation coincide, thus verifying the correctness of theoretical calculations.The traditional dynamic comfort evaluation method can only qualitative evaluation but can not comfort quantitative analysis comfort issues, from the psychological point of view the introduction of the concept of trouble and annoyance rate rate calculation methods, quantitative analysis of 350km/h high-speed trains under the internal dynamics of Comfort; and ISO2631 standards of comfort and high-speed train dynamic analysis results were compared and found a greater consistency between the two to make up for the limitations of traditional methods.