Research On The Energy Absorption Of Foam Aluminum With Silicone Rubber And The Bending Capability Of Foam Aluminum Sandwich Beams

Aluminum foam is a new functional material and structural material. Use seepage method to produce aluminum foam, learn the relation between length of seepage and the size of grain, the temperature of warm-up, the temperature of casting, the stress of casting.Compression deforming activity and energy absorption ability of aluminum foam with silicone rubber and aluminum foam with silicone rubber cylinder sandwich under pressing was studied. The results indicate that the load of aluminum foam with silicone rubber than with not ,the plateau region of the load-displacement curve is longer than with not; The deforming mode of the cylinder sandwich is changed from "diamond mode" to "circular mode"; The aluminum foam with silicone rubber cylinder sandwich need higher load to produce fold, and the appearance of fold is lagged; The energy absorption ability of aluminum foam with silicone rubber and aluminum foam with silicone rubber cylinder sandwich are all increased.The sandwich beams were made of open pore foam aluminum with 60% porosity and aluminum panel of different thickness, and the performance of three-pointbending was studied. The results indicate that the core of sandwich beams with one wide crack is different from alone foam aluminum with three exiguous cracks. If panel of the sandwich beams is too thin, the panel of underside was laniated easily, and if panel of the sandwich beams is too thick, the panel of upside was easy to break away. The specific strength and specific rigidity of sandwich beams are increased with the thickness of panel, but it is decreased after reach the extremum. Select appropriate panel when designing the sandwich beams, maximal effect is obtained when the sandwich beams is lightest.