A Study on Orthogonal Cutting Model by Three- Dimensional Thermo-Elasto-Plastic Method

• Main Authors: Jeng Yen lian, 鄭彥良
• Other Authors: Zone Ching Lin
• Format: Others
• Language: zh-TW
• Published: 1996
• Online Access: http://ndltd.ncl.edu.tw/handle/61212484163362695264

碩士 === 國立臺灣科技大學 === 機械工程研究所 === 84 === The large deformation-large strain finite element theory, and Updated Lagrangin Formulation (U.L.F) and step bye step principles ware used in this paper to develop a 3D thermo elast-plastic analytical model. At the same time, the strain-energy density theory and a material constant ( strain-energy density critical value ) ware introduced as reference criteria for chip separation during the cutting process of metals. Furthermore, the twin-node processing method was added to work with the material constant of strain-energy density critical value. Then the chip separation criterion geometrical for the continuous chip during the metal cutting process and the limitation of tool can be appropriately established. Based on this criterion, and orthogonal 3-dimensional cutting thermos plastic large deformation model can be futher established.