Study And Optimization Of Automobile Bumper Made Of Structure Filled With Aluminum Foam

The present metal Circular tube automobile bumper has better intensity and stiffness, but its energy absorb is worse. Aluminum foam has worse intensity and stiffness, but its energy absorb is better. So both structures are thought to combine in this paper, to make metal circular tube filled with aluminum foam, using both merits, to remedy each scarcity, manufacturing a new kind of automobile bumper not only better intensity and stiffness but also better energy absorb. Theory analysis is studied about energy absorb in the case of static and dynamic axial crushing for metal circular tube filled with aluminum foam. Mathematics models are got about energy absorb and its structure parameters relation. Then mathematics models are proved right through numerical simulation. When this structure is applied in automobile bumper, it is found that the metal circular tube filled with aluminum foam bumper is better than conventional metal Circular tube automobile bumper. Structure optimization is put up for this bumper. Superiority after optimization is showed compared with no optimization.