(1.中南大學(xué) 機(jī)電工程學(xué)院，長沙 410083；
2.株洲工學(xué)院 機(jī)械系， 株洲 412008)
摘 要: 根據(jù)快速超薄鑄軋機(jī)鑄軋輥的特點(diǎn)，從熱彈性力學(xué)的角度建立了熱彈耦合方程并對其求解。綜合接觸壓力(軋制力分布)模型，確定了鑄軋輥溫度場邊界條件，得到了超薄鑄軋機(jī)鑄軋輥?zhàn)冃蔚挠?jì)算模型。利用此模型計(jì)算了某鑄軋機(jī)鑄軋輥的溫度場和變形量，計(jì)算結(jié)果與現(xiàn)場測試數(shù)據(jù)吻合較好，表明所建模型正確可信。通過對鑄軋輥應(yīng)力分析計(jì)算發(fā)現(xiàn)在不同半徑處應(yīng)力性質(zhì)有突變，從而找到了輥芯與輥套滑移、錯(cuò)位的根本原因。
關(guān)鍵字: 鑄軋輥；計(jì)算模型；應(yīng)力應(yīng)變場；熱力耦合
（1.中南大學(xué) 機(jī)電工程學(xué)院，長沙 410083；
2.株洲工學(xué)院 機(jī)械系， 株洲 412008）
Abstract:According to the characteristics of the thin gauge high-speed roll casting roller，based on thermo-elasticity mechanics，the stress-strain field coupling thermal-force was analysed and calculated for the thin-gauge high-speed roll casting roller，and it was found that the stress in different radius changes suddenly, which is one of the basic reason of slide between the roll-cover and roll-core. The result fits well with the testing data. This indicates the model is right and trusty.
Key words: casting roller；computing model；stress-strain field；coupling thermal-force
