Solution of two problem cases of non-axisymmetric loading of corrugated bellows by the MARC-CDC General Purpose Structural Analysis program: report to the UKAEA Culham Laboratory, Abingdon, Oxfordshire

This report outlines the application of the MARC-CDC Structural Analysis Program to two corrugated bellows problems with non-axisymmetric loading. The problems are related to a fusion research experiment using a toroidal vacuum vessel fabricated from curved bellows segments. A FORTRAN program which generates mesh input data for a bellows with any number of corrugations is described. The program is sufficiently general to allow variation in the number and size of elements, in both principal directions, forming the bellows corrugation. A card deck of MARC input data is discussed for one of the two problems analysed. In addition to results of component stresses in the bellows, tables are provided summarizing the important nodal point data for the two problems. To confirm the validity of the solutions obtained, a comparison is made with results of approximate methods of analysis. (author)