Criteria of collapse for pressure loaded structure panels
Publish date: 2002-01-01
Report number: FOI-R--0501--SE
Written in: Swedish
To be able to estimate when a structure panel will collapse it is required that one can calculate the stresses or strains that occures within the panel. A varity of collapse mechanisms are described and proposal of how to give criteria of collapse in simple cases are given. The structure panels are modeled as beams or systems of beams in order to simplify the calculations and reduce the calculation time. Static loads of collapse are given for some elementary cases of elasto-plastic beams. In order to estimate loads and deformations in structure panels exposed to dynamic pressure loads has an old code  been modernized and in some parts been modified to be usable again. The stresses, strains, accelerations and deformations calculated by the program can be used to check if any limiting value has been exceeded. The program itself has no criteria of collapse implemented, which means that the user has to decide the limits. Another possible future use of the cod could be to cheek if any vital parts attached to the panel are subjected to damaging accelerations or deformations.