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題 名 | Using Adjoint Variable Method in the Shape Optimization Under Fatigue Life Constraints=解析性鄰接變數法在疲勞強度限制條件下之最佳化設計 |
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作 者 | 呂百川; | 書刊名 | 中國機械工程學刊 |
卷 期 | 20:3 1999.06[民88.06] |
頁 次 | 頁237-245 |
分類號 | 446.19 |
關鍵詞 | 解析性鄰接變數法; 疲勞強度; 最佳化設計; Optimization; Adjoint variable method; Fracture mechanics; Goodman diagram; |
語 文 | 英文(English) |
中文摘要 | 本文針對傳統機械設計在處理疲勞強度作法上之缺失,提出以鄰接變數法為架構, 結合破壞力學理論進行解析性機械元件之最佳化設計。本法能有效解決涉及疲勞限制條件之 最佳化設計問題。為印證其適用性,特以工研院機械所開發之二行程水冷式機車引擎中之活 塞連桿設計為例,進行不同安全係數下,採本法及傳統作法之比較。結果證實,在不同安全 係數下,本法確能顯著地降低該元件之總體積。 |
英文摘要 | This paper presents a deterministic approach in the optimal shape design of the machine component considering the fatigue life requirement. The main idea is to use the finite element method to calculate the stresses upon the component and to use the sound fracture mechanics theorems and the material fatigue properties to calculate fatigue life during the optimization process. The life requirement is treated as a side constraint and the volume of the component as the objective function. This approach has been successfully applied to the shape optimization of a connecting rod for a newly developed motorcycle engine against the conventionally empirical method using the Goodman diagram. However, in practice, this approach can be applied to a great extent to the design of any component with the prospective crack. |
本系統中英文摘要資訊取自各篇刊載內容。