Response to a localized impact loading of a composite multilayered rotational shell structure: Theory and numerical methods, volume 2
Abstract
Solving problems of locally impacted composite multilayered shells is still a real challenge today. Computational and data storage costs are indeed huge in industrial applications. Moreover, the problems of reliability appear crucial. Among these difficulties, shell modelling and solution of impact problems, with their delicate choice of space-time discretization, are prevalent. Whenever the structures studied admit symmetries, particularly axial, new opportunities arise. They consist in developing new specific procedures for taking advantage of solid properties to reduce computing costs. However, these methods, typically based on developments in Fourier series or decompositions using group theory, lead to new theoretical and practical problems, and published performance seems to be quite moderate so far. The behavior particularities due to symmetries, the risks of extreme sensitivity to imperfections with mode localization and eigenvalue loci veering phenomena, also bring to light theoretical difficulties which have not yet been overcome. Locally impacted composite multilayered rotational (i.e. admitting axial symmetries) shell structure therefore touches upon a number of distinct but interactive subjects. This is why the study has been divided into three basic themes: numerical solution of localized impacts; shell modelling, particularly composite multilayered ones; and theoretical and numerical analysis of axial symmetries including the influence of imperfections. The independently obtained and numerically validated pieces of knowledge are then combined in solving an industrial representative problem to bring out their interconnections. This is volume 2 of a three volume set. Volume 2 focuses on axial symmetric rotation.
- Publication:
-
Unknown
- Pub Date:
- 1994
- Bibcode:
- 1994rlil....2.....K
- Keywords:
-
- Composite Structures;
- Defects;
- Impact Loads;
- Numerical Analysis;
- Point Impact;
- Rotation;
- Shells (Structural Forms);
- Symmetry;
- Decomposition;
- Eigenvalues;
- Fourier Series;
- Group Theory;
- Laminates;
- Shock Waves;
- Structural Mechanics