Assessment of structural analysis technology for elastic shell collapse problemsThe prediction of the ultimate load carrying capability for compressively loaded shell structures is a challenging nonlinear analysis problem. Selected areas of finite element technology research and nonlinear solution technology are assessed. Herein, a finite element analysis procedure is applied to four shell collapse problems which have been used by computational structural mechanics researchers in the past. This assessment will focus on a number of different shell element formulations and on different approaches used to account for geometric nonlinearities. The results presented confirm that these aspects of nonlinear shell analysis can have a significant effect on the predicted nonlinear structural response. All analyses were performed using the CSM Testbed software system which allowed a convenient assessment of different element formulations with a consistent approach to solving the discretized nonlinear equations.
Document ID
19900036095
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Knight, N. F., Jr. (NASA Langley Research Center Hampton, VA, United States)
Macy, S. C. (NASA Langley Research Center Hampton, VA, United States)
Mccleary, S. L. (NASA Langley Research Center Hampton, VA, United States)