直升机抗坠毁座椅磁流变吸能器优化设计

o solve the problem that helicopter crashworthy seat absorber can't accommodate adaptively the variation of external loads and conditions, a seat magnetorheological absorber is proposed. Firstly, the design target is obtained according to the acceptable ultimate load of different passengers . On the basis of modified Bingham-plastic(BPM) model, some configure parameters are optimized by using a multi-objective optimal software Modefrontier. Lastly, the relationship of damping force and velocity is simulated by using a fluid dynamics analysis software CFD while comparing to the BPM model.The result indicates that the designed magnetorheological absorber is feasible.