Behavior of Spinning Pretwisted Composite Plates Using a Nonlinear Finite Element Approach

摘要

The behavior of spinning pretwisted plates is significantly different from that of spinning fiat plates. The cou- pling between bending, twisting, and extension behavior, introduced because of the geometry of these plates, has a significant effect on their static and dynamic behavior. This, in conjunction with coupling due to material asym- metry, can result in fairly nonintuitive, though physically understandable, behavior. Since existing plate/shell finite elements have numerical deficiencies when modeling twisted plates, a six-node triangular element is developed for the analysis of spinning laminated composite structures.