(中南大學(xué) 粉末冶金國(guó)家重點(diǎn)實(shí)驗(yàn)室，長(zhǎng)沙 410083)
摘 要: 利用有限元熱分析軟件ANSYS建立炭/炭復(fù)合材料制動(dòng)過(guò)程三維有限元模型，確定相關(guān)熱載荷計(jì)算方法和關(guān)鍵參數(shù)，仿真制動(dòng)過(guò)程瞬態(tài)溫度場(chǎng)。計(jì)算結(jié)果表明：在試環(huán)軸向存在明顯溫度梯度，而徑向溫度梯度微小，摩擦表面在t=12.7 s時(shí)達(dá)到最高溫度
關(guān)鍵字: 炭/炭復(fù)合材料；溫度場(chǎng)；有限元；制動(dòng)
（State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, China）
Abstract:The 3-dimentional finite element model of C/C composite materials during braking was established by means of finite element software ANSYSY. The calculation method of heat load and relative parameters were confirmed, and the temperature field was simulated. The calculation results show that high thermal gradient appears in the axis direction of the sample, but low thermal gradient appears in the radial direction. The temperature on friction surface raises to the maximum of 662 ℃in the big radius at 12.7 s. The simulation results are consistent with the experiment data, which verifies the validity of the simulated results.
Key words: carbon/carbon composite; temperature field; finite element; brake
