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国际热核聚变实验堆(ITER)超导电流传输线导体的内部电缆体由超导股线和纯铜股线经多级绞缆后复合而成,相对柔软。在传统复合材料理论的基础上,对ITER超导电流传输线导体等效弹性模量进行理论预测:预测一,只考虑电缆体外的不锈钢导管、双绝缘和双屏蔽层;预测二,忽略柔性电缆体的影响,但考虑其内部氦管;预测三,假设电缆体呈各向同性,弹性模量取1~10GPa;预测四,利用均匀化理论分析电缆体的等效弹性模量,复合材料损伤理论分析超导电缆与中心氦管之间、电缆复合体和不锈钢导管之间界面情况。预测值与参考实验值进行比较证实,预测四较符合实际情况,电缆体对整个超导电流传输线导体等效弹性模量的影响较小。 相似文献
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聚变中子源可以真实反映材料在聚变中子辐照下的特性变化,对于开展聚变堆材料测试具有重要意义。基于加速器打靶原理的国际聚变材料辐照装置(IFMIF)与理想聚变中子源在聚变中子能谱等方面仍有一定差异,因此需对聚变中子源方案进行新的思索。本文围绕磁约束聚变中子源开展了磁场位形、加热方案设计与相关计算,分析了场反等离子体在两级级联磁压缩后的等离子体温度、密度演化过程及相应的中子产额,并研究了考虑双流体效应与有限拉莫尔半径效应后场反等离子体倾斜模、旋转模等磁流体不稳定性的抑制情况,最终给出了氘氘脉冲聚变中子源的关键物理参数。研究结果表明,该中子源有望获得年均2 MW/m2以上的高通量密度的聚变中子,能够满足商业聚变示范堆材料测试要求;经功率估算显示,基于场反位形进行两级级联磁压缩的新型聚变中子源方案还具备成为氘氘脉冲聚变能源的应用前景。 相似文献
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Vacuum vessel of the HT-7U is a fully welded toroidal structure with a noncircularcross-section nested in the bore of the TF coils. According to the requirement of the physicsdesign, sixteen horizontal ports on outboard mid-plane and thirty-two vertical ports on the topand bottom are designed for diagnostics, plasma heating, current driving, vacuum pumping andgas puffing. Bellows on these port necks are used for flexible components to absorb the relativedisplacement in radial and vertical directions due to external load, thermal expansion or contrac-tion and assembly tolerance, and also used for isolation of mechanical vibration. For the supportsystem of vacuum vessel it should be not only strong enough to withstand forces acting on thevessel interior components and the vessel itself due to the dead weight and electromagnetic inter-actions during plasma disruption, but also sufficiently flexible to be suited to thermal expansionduring baking. In order to solve this contradiction a new kind of low rigid s 相似文献
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EAST (experimental advanced superconducting tokamak) is an advanced steadystate plasma physics experimental device, which is being constructed as the Chinese National Nuclear Fusion Research Project. During the plasma operation the vacuum vessel as one of the key component will withstand the electromagnetic force due to the plasma disruption, the Halo current and the toroidal field coil quench, the pressure of boride water and the thermal load due to 250℃ baking by pressurized nitrogen gas. In this paper a report of the static and dynamic mechanical analyses of the vacuum vessel is made. Firstly the applied loads on the vacuum vessel were given and the static stress distribution under the gravitational loads, the pressure loads, the electromagnetic loads and thermal loads were investigated. Then a series of primary dynamic, buckling and fatigue life analyses were performed to predict the structure's dynamic behavior. A seismic analysis was also conducted. 相似文献