計(jì)算機(jī)集成制造(CIM)PPT-5-設(shè)計(jì)自動(dòng)化-CAECAE（Computer-AidedEngineering）是利用計(jì)算機(jī)技術(shù)對(duì)工程設(shè)計(jì)進(jìn)行分析和評(píng)價(jià)，計(jì)算出產(chǎn)品的工作參數(shù)、性能參數(shù)和制造參數(shù)，這些復(fù)雜參數(shù)使用傳統(tǒng)的人工方法將難以完成。CAE在設(shè)計(jì)過(guò)程中應(yīng)用于綜合、分析和評(píng)價(jià)階段。在綜合階段，CAE的主要工作是使用面向制造和裝配設(shè)計(jì)方法原理處理生產(chǎn)能力問(wèn)題。在分析和評(píng)價(jià)階段，CAE的工作結(jié)果被CE人員用來(lái)評(píng)定產(chǎn)品設(shè)計(jì)的質(zhì)量。CAE簡(jiǎn)介5.1面向制造和裝配的設(shè)計(jì)方法DFMA(DesignForManufacturing

andAssembly)是一個(gè)設(shè)計(jì)過(guò)程，該過(guò)程從產(chǎn)品設(shè)計(jì)的一開(kāi)始就考慮生產(chǎn)因素。該定義表明：從概念化到評(píng)價(jià)的每項(xiàng)設(shè)計(jì)工作，都必須強(qiáng)調(diào)，設(shè)計(jì)方案是為了滿足市場(chǎng)需求，同時(shí)也要能夠順利制造出來(lái)。DFA/DFM/DFMADFA/DFM/DFMADFA/DFM/DFMADFA/DFM/DFMADFA/DFM/DFMADFA/DFM/DFMADFA/DFM/DFMADFA/DFM/DFMADFA/DFM/DFMADFA/DFM/DFMADFA/DFM/DFMADFA/DFM/DFMADFA/DFM/DFMADFA/DFM/DFMADFA/DFM/DFMADFA/DFM/DFMADFA/DFM/DFMADFA/DFM/DFMADFA/DFM/DFMADFA/DFM/DFMADFA/DFM/DFMADFA/DFM/DFMADFA/DFM/DFMADFA/DFM/DFMADFA/DFM/DFMADFA/DFM/DFMADFA/DFM/DFMADFA/DFM/DFMADFA/DFM/DFMADFA/DFM/DFMADFA/DFM/DFMADFA/DFM/DFMADFA/DFM/DFMADFA/DFM/DFMADFA/DFM/DFMADFA/DFM/DFMADFA/DFM/DFMADFA/DFM/DFMADFA/DFM/DFMADFA/DFM/DFMADFA/DFM/DFMADFA/DFM/DFMADFA/DFM/DFMADFA/DFM/DFMADFA/DFM/DFMADFA/DFM/DFMADFA/DFM/DFMADFA/DFM/DFMA應(yīng)用附錄5.1所列的十條設(shè)計(jì)準(zhǔn)則，分析圖5-1的芯軸/托架部件，看看它違反了哪些準(zhǔn)則。練習(xí)5-15.2CAE分析大多數(shù)情況下，CAE的輸入數(shù)據(jù)是CAD中建立的產(chǎn)品圖形。分析階段的CAE應(yīng)用分為兩大類(lèi)：有限元分析(FEA)和質(zhì)量特性分析。最常使用的CAE軟件是有限元分析（FEA），其定義如下：FEA是一種數(shù)字編程技術(shù)，它通過(guò)把研究對(duì)象劃分為許多“有限元”的構(gòu)造單元，來(lái)分析和研究某個(gè)結(jié)構(gòu)或電路的功能特性。大部分的FEA軟件可分為兩類(lèi)：機(jī)械系統(tǒng)和電子電路。機(jī)械系統(tǒng)的FEA起源于CAD軟件中零件或結(jié)構(gòu)的幾何模型的建立。3DCAD模型被劃分為有限個(gè)單元，在接點(diǎn)處互相連接。有限元分析有限元分析可分成三個(gè)階段：前置處理、計(jì)算求解和后置處理。前置處理是建立有限元模型，完成單元網(wǎng)格劃分；后置處理則是采集處理分析結(jié)果