The effects of relative density of metal foams on the stresses and deformation of beam under bending

• 来源期刊: 力学学报（英文版）
• 年，卷（期）: 2007,（4）
• 页码范围: 409-414
• 页数: 6页
• 语种: 英文

摘要

The exact analytic solution of the pure bending beam of metallic foams is given. The effects of relative den-sity of the material on stresses and deformation are revea-led with the Triantafillou and Gibson constitutive law (TG model) taken as the analysis basis. Several examples for indi-vidual foams are discussed, showing the importance of com-pressibility of the cellular materials. One of the objects of this study is to generalize Hill's solution for incompressible plas-ticity to the case of compressible plasticity, and a kinematics parameter is brought into the analysis so that the velocity field can be determined.