Plasticity theory for anisotropic porous metals

✍ Scribed by J. Kubik; J. Mielniczuk

• Publisher: Elsevier Science
• Year: 1985
• Tongue: English
• Weight: 678 KB
• Volume: 21
• Category: Article
• ISSN: 0013-7944
• DOI: 10.1016/0013-7944(85)90076-1

✦ Synopsis

plasticity theory for sintered porous metals with anisotropic pore structure is proposed. It is assumed that anisotropy of the bulk material and its symmetry group is generated by the pore structure that is described by the structural permeability second-order tensor. In the first part the development of a yield criterion accounting for the experimentally observed properties such as: plastic compressibility, rotation and translation (anisosensitivity) of a yield surface is dicussed. An evaluation is made of appearing material constants. The last part of the paper is concerned with a flow rule formulation. The plastic potential is assumed to be the same as the yield function.