Title :
Edge and size effects in micro composite structure
Author :
Zhang, Yin ; Zhao, Ya-Pu
Author_Institution :
Inst. of Mechanics, Chinese Acad. of Sci., Beijing
Abstract :
Because of the load transfer effect of interface layer, the stress distribution inside the composite structure of film/substrate can be very different from the Tintoshenko´s model. In this paper, we give the derivation and analysis of such load transfer effect of shear-lag (S-L) model. The micro-structure size (boundary conditions) effect together with interface load transfer effect becomes more and more important as the microstructure size including the three dimensions of thickness, width and length shrinks. The microstructure size is also responsible for the so-called edge-induced stress. The edge effect and difference of S-L model and Timoshenko model are also demonstrated
Keywords :
composite materials; crystal microstructure; Timoshenko model; interface load transfer; load transfer effect; microcomposite structure; shear-lag model; Boundary conditions; Composite materials; DNA; Gold; Laboratories; Microstructure; Size measurement; Solid modeling; Stress; Substrates;
Conference_Titel :
Robotics and Biomimetics (ROBIO). 2005 IEEE International Conference on
Conference_Location :
Shatin
Print_ISBN :
0-7803-9315-5
DOI :
10.1109/ROBIO.2005.246281