this report is in accordance with the training occured at college level.
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ANSYS Mini Project MBB 2022 – Computer Aided Engineering Design
Mohd Fauzi Bin Maidin 13983 Govinderjit Singh 14134
Submission Date: 13 May 2010
Problem Statement
The figure shows a square plate with a hole at the center experiencing pressure, p = 100 psi. The dimension of the plate is 10 in. by 10 in., the thickness is 0.1 in. and the radius of the hole is 1 in. The plate is made of steel, E = 29 x 106 psi. Assume Poisson’s ratio to be 0.3. Use the ANSYS software to obtain the maximum stress in the plate. The finite element analysis should be done in several ways. 1.
Use element size 0.3 with a. Quadratic triangular element (Plane2) b. Linear quadrilateral element (Plane42) c. Quadratic quadrilateral element (Plane82)
2.
Use element size 0.1with a. Linear quadrilateral element (Plane42)
3.
Use symmetrical model a. Element size 0.3 b. Linear quadrilateral element (Plane42)
Objective
The objective of the project is to make student familiar with ANSYS program and be able to analyse and solve Finite Element problem. In term of these project, the objective is to perform Finite Element analysis and Finite Element solving using ANSYS software.
Result The result below will include • • •
Mesh image Deformed and undeformed geometry Von Mises stress image
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Element size 0.3 quadratic triangular element (Plane2)
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Element size 0.3 linear quadrilateral element (Plane42)
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Element size 0.3 Quadratic quadrilateral element (Plane82)
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Element size 0.1 linear quadrilateral element (Plane42)
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Symmetrical model, element size 0.3 linear quadrilateral element (Plane42)
Discussion
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By doing meshing, we can control the fineness of the mesh. The smaller the element size, the finer the mesh. It is the simplest way to define the element six\ze by defining a global element size. That’s why if we see through all the results, there are some result where the meshing is very small/fine as we set it to 0.1 and some are big as we set to 0.3.
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Deformed and undeformed geometry is used to determine the deformation of specimen after load is applied. The blue region shows when it is deformed and the dotted line shows when it is undeformed state.
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Von Mises stress image is used to see the stress distribution throughout the entire specimen. The scaling of colours determine the stress on certain area.
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The most important thing in this finite element solution is the determination of boundry condition, the Poissons ratio, and the E value of the material.
*** there are no plane 2 include in the library of ANSYS. So for the first problem, there are no thickness can be input.
Conclusion ANSYS program can be use in order to solve Finite Element problem where we can do force testing, pressure testing, temperature effects. The result can be produced in a lot of form. Most important of this program is the boundry condition must be right.
