Research on End Structure of Subway Train Seat and Occupant Collision Safety
In order to solve the occupant safety problem under the collision condition of subway trains,the multi-objective optimi-zation design of the end structure of subway seats is realized.Combined with the seating facilities of the subway vehicles in my country,the Hybrid Ⅲ 50th dummy was used to simulate and analyze the occupant collision protection effect of three types of sub-way seat structures.The LS-OPT tool was used to construct the target parameters(occupant head Injury index HIC,chest 3ms composite acceleration,neck injury index Nij,and leg femoral compressive force)as a proxy for design variables(transverse post height H,post distance L,lateral plate elastic modulus E,and medial lateral plate height CE)model,and used the adaptive simulated annealing algorithm to optimize the established polynomial response surface model,and obtained the optimal parame-ter configuration of the end structure of the subway seat.Finally,the THUMS dummy was used to verify the optimal structure.The research results show that the damage parameters such as brain tissue strain,brain tissue pressure,and liver strain of the dummy are significantly reduced after optimization,which improves the safety of the occupants,indicating the optimization re-sults based on the polynomial surrogate model and the adaptive simulated annealing algorithm.It is reliable,and the research re-sults can provide theoretical support for the design of the end structure of subway train seats.
万方数据
维普
