Solid Geometric Figures with Plane Boundaries

Solid Geometric Figures with Plane Boundaries. 3-11... 

SOLID GEOMETRIC FIGURES WITH PLANE BOUNDARIES... 

In a 3D model, no geometric assumptions are made and the complete geometry of the package is represented. A quarter or one-eighth symmetry model with appropriate symmetry boundary conditions can be used. Figure 6 illustrates an example of a quarter-symmetry 3D model with solid elements for a flip chip on an organic substrate with an underfill. As shown in Fig. 6 and 7, the nodes on the symmetry planes are constrained in a direction perpendicular to the symmetry plane. One node at the corner bottom of... 

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