6. (20 pts.). DO NOT ATTEMPT TO SOLVE FOR DEFLECTION OR STRESS IN THIS PROBLEM!!

Question

6. (20 pts.). DO NOT ATTEMPT TO SOLVE FOR DEFLECTION OR STRESS IN THIS PROBLEM!!!! The system shown below is to he modeled with appropriate finite elements to obtain deflection and stress in the outer housing, using an approach that minimizes solution time without sacrificing accuracy. It is symmetrie about the axis as noted, with intermal pressure, P created by the plunger. Material is glass with E-69 MPa, Poisson's ration 0.15. Assume the lower hole is closed during test conditions, and the plunger forms a seal without any radial restraint on the housing Planger 20 m 90 mm Liguid Glass syrinpe Figure P9-23 (A) select a finite element appropriate for the model (for example, 2D solid. 3D solid. plate/shell, link beam, frame (a) 2D Plane stress (b) 2D Axisymmetric (c) 2D Plane strain (d) 2D Beam (B) Sketch an acceptable element mesh discretization for your model, including symmetry if possible. (C) Note on your mesh the specific boundary conditions and loads for your model, including any that may be needed to remove rigid body motion/singularity in the stiffness matrix. Identify the load or pressure distribution for your model

Explanation / Answer

Here,

2D Axisymmetric model has to be considered because the model is symmetric about the axis (given in problem)

B) We can construct and mesh the Axis symmetrical model using a tool like ANSYS or Hypermesh. Due to tool unavailability it is not possible to show the mesh.

C) Axissymmetric BCs have to be applied for the model to get the 3D view of the model

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