Necessary conditions of internal necking between microvoids in ductile materials

• 作 者: 宁建国 黄筑平
• 机 构: Department of Mechatronics, Beijing Institute of Technology, Beijing 100081, China,Department of Mec
• 出 处: Progress in Natural Science
• 发表日期: 1998年06期
• 关键词: ductile elliptical straight tensile Riemann mentioned coordinates connecting ult

Under the action of external loads, the critical condition of fracture in ductile materials is closely related to the strong interactions among internal microdefects at the later stage of deformation. By means of Riemann’s analytical integration, necessary conditions for the internal necking between adjacent elliptical voids under plane strain conditions are studied. The influences of the aspect ratio of elliptical voids, the distance between two voids, and the angle of the straight line connecting the central points of two voids with respect to the tensile direction on the above mentioned necessary conditions are also discussed.

Under the action of external loads, the critical condition of fracture in ductile materials is closely related to the strong interactions among internal microdefects at the later stage of deformation. By means of Riemann’s analytical integration, necessary conditions for the internal necking between adjacent elliptical voids under The influences of the aspect ratio of elliptical voids, the distance between two voids, and the angle of the straight line connecting the central points of two voids with respect to the tensile direction on the above mentioned necessary conditions are also discussed.