Deformation behavior of thermoplastic elastomer molding (1): observation for static compressive deformation behavior of cylindrical molding

摘要

Thermoplastic elastomers possess properties of both rubber and engineering plastics. The most important feature of these materials is the combination of the incompressibility and flexibility of rubber with the rigidity of engineering plastics. Thermoplastic elastomers can be employed in a wide variety of applications where small deformation is repeatedly applied. Attempts are underway to elucidate the properties in the region of large deformation in order to respond to demands for ensuring the integrity of structural components under extreme conditions such as impacts and collisions. In this report, we focused on the cylindrical molding of thermoplastic elastomers, and compressive deformation behavior in static compression tests where buckling was observed. The effect of the molding shape on the load-displacement behavior was examined. The following results were obtained; (1) The buckling deformation behavior of the cylindrical molding changed with the shape of the molding. (2) The load-displacement behavior was able to be controlled by a change of inner diameter and outer diameter of the molding.