Matrix Methods of Aerospace Structural Analysis. Invited Paper.

摘要

The future development of key areas in the field of matrix structural analysis is considered. The relationship of these areas to the overall design problem is established, and sources of past difficulties within the areas are identified. Avenues of approach to the difficulties are suggested and illustrated by reference to recently conducted research. In the area of modelling, the triangular membrane element and the bar-panel idealization are evaluated. A method of improving results obtained from the analysis of models composed of triangular membrane elements is presented. The loss of numerical accuracy in linear structural analysis is considered and methods of improving accuracy are described. Problems in the field of nonlinear structural analysis are reviewed. The possibility of an interactive computational approach to the synthesis of complex structures is suggested, and an interactive graphics approach to the synthesis of a structure subjected to steady-state vibration is demonstrated.