(中南大學(xué) 機(jī)電工程學(xué)院， 長(zhǎng)沙 410083)
摘 要: 研究了鋁鑄軋的前箱及鑄嘴型腔的流場(chǎng)的有限元分析的計(jì)算標(biāo)準(zhǔn)； 采用通用有限元計(jì)算軟件ANSYS的FLOTRAN模塊對(duì)型腔流場(chǎng)進(jìn)行模擬計(jì)算； 對(duì)計(jì)算結(jié)果運(yùn)用ANSYS自帶的后處理技術(shù)及使用MATLAB軟件對(duì)結(jié)果數(shù)據(jù)進(jìn)行了處理， 比較了兩種模擬工況的流場(chǎng)模型的出口速度線圖， 并參照兩次現(xiàn)場(chǎng)實(shí)驗(yàn)的現(xiàn)象及數(shù)據(jù)， 定量討論了流場(chǎng)有限元計(jì)算的出口速度的絕對(duì)誤差、 相對(duì)誤差， 及其與出板速度、 出口開(kāi)口度大小等因素的關(guān)系。 總結(jié)了流場(chǎng)有限元計(jì)算的許用不均勻度， 即穩(wěn)定生產(chǎn)所要求的流場(chǎng)波動(dòng)限度的標(biāo)準(zhǔn)的取值范圍及其適用條件， 為未來(lái)有限元分析計(jì)算確定了初步依據(jù)。
關(guān)鍵字: 鑄軋； 流場(chǎng)； 有限元分析； 許用不均勻度
（School of Mechanical and Electrical Engineering,
Central South University, Changsha 410083, China）
Abstract: To explore the computation standards for finite element analysis of the fluid fields of the front-box and the nozzle-shaped space of aluminum roll-casting, the computation was performed by using the FLOTRAN module of the general finite element analysis software ANSYS. Postprocessing by ANSYS and stricter analysis of results by software MATLAB was reviewed. The allowable inhomogeneity and its applicabilities for fluid field finite element analysis have been rendered down from observations and recorded data of two experiments in reality. The primary standard of finite element analysis will be enriched by the developing technique of experiments and software.
Key words: roll cast; fluid field; finite element analysis; allowable inhomogeneity
