Dear Guangzhao and all the delegates of the CAS annual meeting: It is a great pleasure to learn that the 1994 annual meeting of the Chinese Academy of Sciences is being held in Beijing.Ⅰ would like to send you my war...Dear Guangzhao and all the delegates of the CAS annual meeting: It is a great pleasure to learn that the 1994 annual meeting of the Chinese Academy of Sciences is being held in Beijing.Ⅰ would like to send you my warm congratulations on the occasion and extend my cordial greetings to the delegates of the meeting and all the staff of the Chinese Academy of Sciences. In the past 45 years, especially since the reform and opening to the outside, the Chinese展开更多
The spinning technique has been widely used in the manufacture of aerospace thin-walled axisymmetric components because of its excellent formability. Damage and fracture,as the important defects that often occur and m...The spinning technique has been widely used in the manufacture of aerospace thin-walled axisymmetric components because of its excellent formability. Damage and fracture,as the important defects that often occur and must be avoided in the forming and service stages of components,have attracted much attention of researchers. In this paper,the fracture behavior and laws of spinning components such as conical parts,tubular parts,and components with inner ribs are summarized,the typical coupled and uncoupled ductile fracture models are introduced,and their applications in spinning are analyzed. Meanwhile,the recent developments on the modified ductile fracture model in analyzing damage and fracture mechanisms of spinning are emphatically introduced. The results could provide guidance for the selection and establishment of appropriate ductile fracture models in the finite element simulation for the accurate prediction and analysis of fracture moment,location,form,damage mechanism,and evolution law,and help the development of precision spinning techniques for high-performance thin-walled complex components.展开更多
文摘Dear Guangzhao and all the delegates of the CAS annual meeting: It is a great pleasure to learn that the 1994 annual meeting of the Chinese Academy of Sciences is being held in Beijing.Ⅰ would like to send you my warm congratulations on the occasion and extend my cordial greetings to the delegates of the meeting and all the staff of the Chinese Academy of Sciences. In the past 45 years, especially since the reform and opening to the outside, the Chinese
基金National Science and Technology Major Project(J2019-VII-0014-0154)the Key Project of National Natural Science Foundation of China(No.52130507)+1 种基金National Natural Science Foundation of China(No.51790175)National Key R&D Program of China(Nos.2020YFA0711100 and 2021YFB3400900)。
文摘The spinning technique has been widely used in the manufacture of aerospace thin-walled axisymmetric components because of its excellent formability. Damage and fracture,as the important defects that often occur and must be avoided in the forming and service stages of components,have attracted much attention of researchers. In this paper,the fracture behavior and laws of spinning components such as conical parts,tubular parts,and components with inner ribs are summarized,the typical coupled and uncoupled ductile fracture models are introduced,and their applications in spinning are analyzed. Meanwhile,the recent developments on the modified ductile fracture model in analyzing damage and fracture mechanisms of spinning are emphatically introduced. The results could provide guidance for the selection and establishment of appropriate ductile fracture models in the finite element simulation for the accurate prediction and analysis of fracture moment,location,form,damage mechanism,and evolution law,and help the development of precision spinning techniques for high-performance thin-walled complex components.
