BlatzKo Blatz-Ko Hyperelastic Material The Blatz-Ko material can be used to simulate foam rubber. References 10.1016/0045-7949(86)90199-9 Syntax Text Only1 2 3 4 5material BlatzKo (1) (2) (3) [4] # (1) int, unique tag # (2) double, elastic modulus # (3) double, poissons ratio # [4] double, density, default: 0.0