本文選題：高溫超導(dǎo) + 磁熱相互作用�。� 參考：《應(yīng)用力學(xué)學(xué)報(bào)》2017年05期

【摘要】：高溫超導(dǎo)體在脈沖磁化過程中會(huì)受到熱應(yīng)力和電磁應(yīng)力的共同作用。本文基于超導(dǎo)電磁基本方程和熱傳導(dǎo)方程,分析了上升時(shí)間為1s的一種指數(shù)脈沖磁場(chǎng)作用下超導(dǎo)圓柱脈沖磁化過程中的應(yīng)力狀態(tài)。結(jié)果表明:熱應(yīng)力主導(dǎo)了脈沖磁化的應(yīng)力狀態(tài),由于熱應(yīng)力的作用,總徑向正應(yīng)力幾乎總為拉應(yīng)力;無論外磁場(chǎng)的上升和下降階段,總環(huán)向正應(yīng)力在超導(dǎo)體中呈現(xiàn)三個(gè)區(qū)域,在中心和邊界區(qū)域?yàn)檎?在這兩個(gè)區(qū)域之間為負(fù),且在外磁場(chǎng)的上升階段,總環(huán)向應(yīng)力在中心區(qū)有一個(gè)均勻分布區(qū);徑向和環(huán)向正應(yīng)力的最大值均出現(xiàn)在外磁場(chǎng)的下降階段。
[Abstract]:High temperature superconductors are subjected to both thermal and electromagnetic stresses during pulse magnetization. Based on the basic superconducting electromagnetic equation and the heat conduction equation, the stress state of a superconducting cylinder during pulse magnetization under the action of an exponential pulsed magnetic field with rising time of 1 s is analyzed in this paper. The results show that the thermal stress dominates the stress state of pulse magnetization, and the total radial normal stress is almost always tensile stress due to the effect of thermal stress. In the center and boundary region, the total circumferential stress has a uniform distribution in the center region, and the maximum radial and circumferential normal stress appear in the decreasing phase of the external magnetic field in the rising phase of the external magnetic field.
【作者單位】： 常州工學(xué)院機(jī)械與車輛工程學(xué)院;
【基金】：江蘇省自然科學(xué)基金(BK20131140)
【分類號(hào)】：O511.3

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1 霍海寬,丘明,夏東,徐哲,林良真;高溫超導(dǎo)塊脈沖磁化實(shí)驗(yàn)研究與理論模擬[J];低溫物理學(xué)報(bào);2004年04期

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本文編號(hào)：1996975