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Shell-to-solid submodeling and shell-to-solid coupling of a pipe joint

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Submodeling is the technique used in ABAQUS for analyzing a local part of a model with a refined mesh, based on interpolation of the solution from an initial global model (usually with a coarser mesh) onto the nodes on the appropriate parts of the boundary of the submodel. Shell-to-solid submodeling models a region with solid elements, when the global model is made up of shell elements. Shell-to-solid coupling is a feature in ABAQUS by which three-dimensional shell meshes can be coupled automatically to three-dimensional solid meshes. The analysis is tested as a static process in ABAQUS/Standard

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