摘要

一般工程師在設計產品時所考量的地方可從性能、外型、可靠度等傳統設計考量因素下手，但近年在歐盟催生WEEE、RoHS、EuP一系列對環境保護措施的指令下，使得工程師需要面對的新問題就是將產品因生產製造、使用、回收階段所產生的環保問題納入考量，因此整合環境影響因素與傳統設計考量因素是未來的設計趨勢。
本文將多重領域多目標最佳化設計法做為整合產品設計的概念，藉由生命週期評估軟體（SimaPro）求得LCD與其他同類型產品的生命週期數據，再用實驗計劃法的反應曲面法求得產品的近似曲面；同時使用Solidworks建立產品模型並模擬最大應力(von Mises stress)的數值，再用反應曲面法求得產品的近似曲面，利用反應曲面所得的結果使產品設計者更容易獲得設計參數數據。最後利用遺傳演算法達到同時考量降低最大應力值及降低環境方面影響這兩種不同設計觀點，完成多重領域多目標最佳設計的目標。文中以液晶螢幕為案例來驗證本文所提出之多重領域多目標最佳化設計方法之效果。

Abstract

In generally, engineers design a product from the traditional design factors, such as performance, appearance, reliability, etc. Because of a chain of environmental enactment like WEEE, RoHS and EuP are pushed in European Union in recent years, the new problem for engineers is to consider the environment impact from the life cycle of making a product, such as manufacture, use and recycle, etc. Therefore combination the environmental influences with traditional design factors is a product design trend in the future.

This research presents a multidisciplinary optimization method for integrating the concept of product design. First, designers get the similar products’ LCA result of LCD by LCA software, SimaPro, and model LCD by Solidworks to acquire von Mises stress data. Second, designers evaluate the two approximate curved surface functions by response surface method. Using response surface functions can make designer easily to get design data. Finally, integrate two functions and calculate the optimal results by genetic algorithm. LCD is the example to prove the capabilities of the proposed multidisciplinary optimization method.

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