Shape Modelling of Metal Foams of Open/Closed States and their Intermediates by Implicit Function

. Recently, to generate metal foam models for either open or closed state, a sphere-function-based method and a radial-basis-function-based one have been proposed. In these methods, implicit functions are employed for representing shapes of metal foams. In this pa-per, these methods based on spheres and radial basis functions have similarly been extended by employing characteristics of implicit functions, so that open / closed states and their intermediates can be represented. It is an advantage of the extended methods that any states of metal foams can be represented by only one implicit function.