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        <title>Metafor - doc:user:elements:shells</title>
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       <dc:date>2026-04-09T23:14:47+00:00</dc:date>
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        <dc:date>2016-03-30T13:23:04+00:00</dc:date>
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        <title>DG shell boundary conditions</title>
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        <description>DG shell boundary conditions

Since shell formalism only takes displacements into account, rotating boundary conditions are imposed though a DG formulation.

Materials

As for boundary condition elements, there is no material to associate to an element.

Elements

Since no material is required, the first stage consists in defining an ElementProperties:</description>
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        <title>DG shell interactions</title>
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        <description>DG shell interactions

Once shell interactions are defined, they must be completed with (Discontinuous Galerkin) interface interactions, following the well-known material-element-interaction pattern.

Materials

First, the material is defined as:
materialno = materialset.define (number, type)
materialno = materialset(number)
materialno.put(param, value)
materialno.depend(param, fct, Key(Lock)))
...</description>
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        <title>Shells</title>
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        <description>Shells

Materials

The definition of shell finite elements follows the same logic as volume elements. First, a material is defined: 
materialno = materialset.define (number, type)
materialno = materialset(number)
materialno.put(param, value)
materialno.depend(param, fct, Key(Lock)))
...</description>
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        <title>General Points</title>
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        <description>General Points

Introduction

Shell elements are used to model thin bodies in 3D. It must be used together with DG (Discontinuous Galerkin) interface elements. Specific shell interactions are materials must be used (see Shells), although the interaction is still managed by the</description>
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