强度与环境
彊度與環境
강도여배경
STRUCTURE & ENVIRONMENT ENGINEERING
2013年
3期
48-52
,共5页
孔凡金%尹晓峰%张伟%刘宝瑞%程昊
孔凡金%尹曉峰%張偉%劉寶瑞%程昊
공범금%윤효봉%장위%류보서%정호
结构热试验%石英灯%辐射加热器%盲区%热流场
結構熱試驗%石英燈%輻射加熱器%盲區%熱流場
결구열시험%석영등%복사가열기%맹구%열류장
thermal-structure test%quartz lamp%radiation heater%blind area%heat flux field
石英灯已广泛应用于结构热试验辐射加热器中，但是由于石英灯灯头安装处工作温度较低，因此在两列石英灯连接部位形成灯头盲区，从而使试验件相应区域热流产生明显下降。通过蒙特卡罗方法开展了灯头盲区对热流场的影响分析，获得了灯头盲区尺寸、灯阵与试件距离对热流波谷的影响规律，提出并讨论了改善灯头盲区的方法。研究结果为指导加热器布局设计、提升结构热试验模拟精度具有积极意义。
石英燈已廣汎應用于結構熱試驗輻射加熱器中，但是由于石英燈燈頭安裝處工作溫度較低，因此在兩列石英燈連接部位形成燈頭盲區，從而使試驗件相應區域熱流產生明顯下降。通過矇特卡囉方法開展瞭燈頭盲區對熱流場的影響分析，穫得瞭燈頭盲區呎吋、燈陣與試件距離對熱流波穀的影響規律，提齣併討論瞭改善燈頭盲區的方法。研究結果為指導加熱器佈跼設計、提升結構熱試驗模擬精度具有積極意義。
석영등이엄범응용우결구열시험복사가열기중，단시유우석영등등두안장처공작온도교저，인차재량렬석영등련접부위형성등두맹구，종이사시험건상응구역열유산생명현하강。통과몽특잡라방법개전료등두맹구대열류장적영향분석，획득료등두맹구척촌、등진여시건거리대열류파곡적영향규률，제출병토론료개선등두맹구적방법。연구결과위지도가열기포국설계、제승결구열시험모의정도구유적겁의의。
Quartz lamps are widely used as the radiation heater in thermal testing. But, because of the lower working temperature of the lamp holder, the blind area would appear at the junction of two quartz lamps so that the heat flux on the relative areas of samples would be declined. Based on Monte Carlo method, both the effects of the blind area size and the distance between lamp-array and sample on heat flux field of sample were investigated, and the means to improve the heat flux field under the influence of blind area was proposed. The research could be used for the design of heater layout;thereby the performance of the thermal testing will be improved.
