Geometrically nonlinear analysis of stiffened composite panels with various end-support conditions
Abstract
Recent enhancements to the NLPAN computer code are presented. NLPAN is a finite strip method for the geometrically nonlinear static analysis of prismatic composite structures subjected to in-plane and pressure loading. Refinements to the original approach of NLPAN are noted, and the modifications necessary to model clamped ends, eccentrically loaded ends, and ends with rotationally elastic support are discussed. Analytical predictions for axially loaded stiffened panels with various types of end support are compared with experimental measurements. Overall there is good agreement between analytical results and test results. The method is successful in modelling key mechanisms which can cause elastic collapse.
- Publication:
-
AIAA/ASME/ASCE/AHS/ASC 34th Structures, Structural Dynamics, and Materials Conference
- Pub Date:
- April 1993
- Bibcode:
- 1993ssdm.conf.2699S
- Keywords:
-
- Composite Structures;
- Load Distribution (Forces);
- Panels;
- Plate Theory;
- Reinforcement (Structures);
- Static Characteristics;
- Computer Programs;
- Graphite-Epoxy Composites;
- Stress-Strain Relationships;
- Structural Mechanics