Dynamic impact behavior of aluminum foam with a Taylor impact test and a theoretical analysis

As an excellent structural material, aluminum foam has extensive application prospects. Studying dynamic impact performance of aluminum foam has a theoretical significance and engineering value. Taylor impact test using, a cylinder projectile to impact a rigid target to acquire dynamic response data of an elastic meterial is an important dynamic test method with wide application in solid metal field. Due to the compressibility of aluminum foam, the classical Taylor theory is not applicable. Here, based on a certain assumption and test data, a Taylor analysis model for dynamic impact response of aluminum foam was built, the effectiveness of this model was verified. The test results showed that the mean density of the deformed region of the aluminum foam projectile increases with increase in impact velocity, and the rising tendency becomes gentle when impact speed is greater than 110m/s; mean while, with increase in impact velocity, the residue length of the aluminum foam projectile almost linearly decreases.