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題 名 | 先天不完美含裂縫平板之力學分析 |
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作 者 | 蕭德瑛; 黃運火; | 書刊名 | 力學 |
卷 期 | 7:1 1991.03[民80.03] |
頁 次 | 頁51-59 |
分類號 | 440.13 |
關鍵詞 | 力學; 平板; 裂縫; |
語 文 | 中文(Chinese) |
中文摘要 | 本文利用有限元素法分析一先天不完美之含裂縫平板受張力時的力學行為。本文之目的有:(1)找出對平板結構最不好之先天不完美之形狀;(2)在不同幅度之先天不完美情形下,應力強度因子K�漱坐j小。本文之基本假設為平板之變形很小,因此平板公式可用於本文之公式推導。本文之基本公式由古典板理論所推導出來,而平面力平衡方程式與彎矩平衡方程式分開來計算。在有限元素分析時,除了使用一般元素外尚用了奇異元素。 |
英文摘要 | The fracture charactics of initial imperfect elastic plates with a central crack subjected to a uniaxial tensile load are analyzed by the finite element method. The pruposes of this study are: (1) finding the worst imperfection shape for the initial imperfect cracked plates; (2) finding the effect of the amplitude of the initial imperfection on the stress intensity factors. The basic assumptions of present solution methodology are the deformation of plates are small and the flate plate equation can be used. Therefore the classical plate theory is used to derive the governing equations and the strectching equilibrium and bending equilibrium equations are solved seperately. Furthermore, in the finite element formulation, the singular elements of plate bending and stretching are used around the crack tip. |
本系統中英文摘要資訊取自各篇刊載內容。