5 ft loading g 322 ftsec2 55ft r 4 ft analysis

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Unformatted text preview: 3 m, are subjected to a surface charge. Find the resultant electrostatic force between the spheres. Figure 51.1 Charged Spheres Problem Sketch Material Properties ε = 8.854E-12 F/m Geometric Properties r1 = 1.0 m r2 = 3.0 m r3 = 6.0 m r4 = 1.25 m Loading Surface charge = 8.854 E-12 C/m2 ANSYS Verification Manual . ANSYS Release 9.0 . 002114 . © SAS IP, Inc. 1–120 VM51 Analysis Assumptions and Modeling Notes The finite element mesh and the infinite element mesh are generated from the solid model. A planar section of the model is meshed with PLANE121 elements and rotated through 30 degrees. The 2-D mesh creates a 3-D mesh of SOLID122 elements. SHELL93 elements are generated over the outer surface of the 3-D mesh and extruded in the radial direction to complete the finite element domain. The process is repeated to extrude the INFIN111 mesh in the radial direction. It can be assumed that a symmetry plane exists at Y = 0, at which a zero voltage constraint is imposed. Infinite flags are set for the outer surface of the INFIN111...
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