![]() No mesh convergence studies have been performed, but the reasonable comparison between the results of this analysis and the experimentally observed deformation suggests that the mesh is adequate, in the sense that major aspects of the behavior are predicted fairly well. The mechanical interaction between the node-based surface and the rigid surface is assumed to be frictionless. The rigid wall is modeled as an analytical rigid surface with a rigid body constraint in conjunction with a surface definition. ![]() Alternatively, the exterior surface of the frame could have been defined using an element-based surface. The individual nodes of the frame that may be involved in contact with the wall are assigned to a node-based surface. The contact between the frame and a flat, rigid wall is modeled with a contact pair. First-order beam elements (element type B21) are used to model the frame. The finite element idealization is shown in Figure 1.3.14–2. The dimensions of the physical structure are shown in Figure 1.3.14–1.
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