The bubble problem of the plasma facing material: A finite element study
The bubble problem of the plasma facing material: A finite element study
复制标题
等离子体表面材料的气泡问题：有限元研究
DOI：
10.1016/j.net.2020.03.020
复制
发表时间：
2020-10
影响因子：
2.7
通讯作者：
Deng Shuiquan
中科院分区：
文献类型：
--
作者：
Kang X.;Cheng X.;Deng Shuiquan
通过引入等效应力与温度场的关系，研究了聚变堆第一壁材料在等离子体气泡作用下的损伤。利用有限元方法研究了稳态工况下气泡的位置、形状以及不同气泡之间的协同作用。在瞬态热负荷下，已经发现发生塑性变形，并且由于气泡的存在而显著增强。计算得到的等效应力集中位置与多次试验中观察到的钨表面裂纹位置吻合较好。我们的模拟表明，气泡的损坏还不足以导致钨装甲的灾难性失效;然而，它可以引起钨表面的局部和逐渐脱离，这为观察到的凹坑和粗糙或毛状表面形貌等提供了合理的解释。考虑到瞬态热负荷，估计钨瓦片的安全厚度的下限大于2 mm。
The damage of first wall material in fusion reactor due to the bubbles caused by plasma has been studied by introducing a relation between the von Mises equivalent stress and the temperature field. The locations and shapes of the bubbles and the synergetic effect between the different bubbles under steady operational conditions have been studied using the finite elements method. Under transient heat loads, plastic deformations have been found to occur, and are significantly enhanced by the presence of the bubbles. The calculated concentration locations of von Mises equivalent stress are well consistent with the observed crack positions of the tungsten surface in many test experiments. Our simulations show that the damage of the bubbles is not severe enough to lead to catastrophic failure of the tungsten armor; however, it can cause local and gradual detachment of tungsten surface, which provides a reasonable explanation for the observed pits and rough or hairy surface morphology etc. Considering the transient heat loads, the lower bound of the security thickness of the tungsten tile is estimated to be greater than 2 mm.
登录
查看更多内容
影响因子：
1.7
作者：
A. Shoshin;A. Arakcheev;A. Arzhannikov;A. Burdakov;I. Ivanov;A. Kasatov;K. Kuklin;S. Polosatkin;V. Postupaev;S. Sinitsky;A. Vasilyev;L. Vyacheslavov
通讯作者：
A. Shoshin;A. Arakcheev;A. Arzhannikov;A. Burdakov;I. Ivanov;A. Kasatov;K. Kuklin;S. Polosatkin;V. Postupaev;S. Sinitsky;A. Vasilyev;L. Vyacheslavov
影响因子：
1.2
作者：
T. Hirai;K. Ezato;P. Majerus
通讯作者：
T. Hirai;K. Ezato;P. Majerus
影响因子：
3.3
作者：
K. Tomabechi;J. Gilleland;Y. Sokolov;R. Toschi
通讯作者：
K. Tomabechi;J. Gilleland;Y. Sokolov;R. Toschi
DOI：
10.5860/choice.35-3328
发表时间：
2020-01
期刊：
--
影响因子：
--
作者：
W. Pilkey
通讯作者：
W. Pilkey
影响因子：
3.3
作者：
Shu, W. M.;Wakai, E.;Yamanishi, T.
通讯作者：
Yamanishi, T.