The knee bracing steel frame (KBF) is a new kind of energy dissipating frame, which combines excellent ductility and lateral stiffness. As the structural fuse of the frame, the knee element will yield first during a s...The knee bracing steel frame (KBF) is a new kind of energy dissipating frame, which combines excellent ductility and lateral stiffness. As the structural fuse of the frame, the knee element will yield first during a severe earthquake so that no damage occurs to the major structural members and the rehabilitation is easy and economical. To help fully understand the relations be- tween its seismic performance and the structural parameters, systematic elastoplastic analysis of the KBF structure with finite element method was conducted in this work. Finally, general design recommendations were made according to the results of the analysis.展开更多
This paper established practical 3-D gear models to study the stiffness influe ncing factors of a loaded gear by finite element method, such as friction parameters, material properties, an d gear structures. The resea...This paper established practical 3-D gear models to study the stiffness influe ncing factors of a loaded gear by finite element method, such as friction parameters, material properties, an d gear structures. The research shows that, in elastic deformation, gear stiffness increases when sliding frict ion ability of contact pair decreases; meanwhile, the gear structure, especially asymmetric design in gear’ s shaft direction will also decrease gear stiffness.展开更多
基金Project (No. 2002CB412790) supported by the National BasicResearch Program (973) of China
文摘The knee bracing steel frame (KBF) is a new kind of energy dissipating frame, which combines excellent ductility and lateral stiffness. As the structural fuse of the frame, the knee element will yield first during a severe earthquake so that no damage occurs to the major structural members and the rehabilitation is easy and economical. To help fully understand the relations be- tween its seismic performance and the structural parameters, systematic elastoplastic analysis of the KBF structure with finite element method was conducted in this work. Finally, general design recommendations were made according to the results of the analysis.
文摘This paper established practical 3-D gear models to study the stiffness influe ncing factors of a loaded gear by finite element method, such as friction parameters, material properties, an d gear structures. The research shows that, in elastic deformation, gear stiffness increases when sliding frict ion ability of contact pair decreases; meanwhile, the gear structure, especially asymmetric design in gear’ s shaft direction will also decrease gear stiffness.
