A Study of stress concentration forOrthotropic plates containing elliptic holes
| Autor: | Po-Jung Huang, 黃柏融 |
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| Rok vydání: | 2013 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 101 With dual boundary integral equation, combined from Cauchy''s formalism and anisotropic elastic mechanics, this thesis is aimed to analyze the maximum stress concentration on the inner plate or boundary by five different types of elliptic holes in an orthotropic plate. First, the analytic solution of the infinite plate with single elliptic hole under uniform tensile stress is used to confirm the accuracy of the numerical method. Second, five different types of elliptic holes are compared with literature numerical solution for isotropic material to further confirm the accuracy of the method. And then, this thesis takes Silicon, a cubic materials, for example, when the ratio of minor axes to major axes and the distance between two or more than two elliptic holes are smaller, the maximum stress value will be larger, and it would be slightly smaller than that for isotropic material. Last, when the material constant A formed by elastic constant is smaller, the maximum stress value would be larger, but the value would not change obviously with material constant B. This thesis constructs a method for computing the maximum stress concentration value by inputting the elastic constant, the size of holes, and distance between each holes. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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