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41.
HELIMAK装置真空室作为该装置的重要部件,是等离子体运行的直接场所,在装嚣运行期问町以为等离子体的运行提供一种超高真空运行环境。对于此类核聚变装置的结构设计,必须考虑运行时的实际工况载荷,进行详细的结构力学分析,使结构设计充分安全可靠。文中首先借用大犁有限元分析程序NASTRAN,对该结构的力学性能进行数值模拟分析,获得了HELIMAK真空室的应力云图和位移变形,最大应力强度为144MPa,最大何移变形为1.98mm。然后在力学分析的基础上对结构进行优化,为该装置的最终研制提供详实的理论依据。 相似文献
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KTX为中国科学技术大学在建的反场箍缩实验装置,在同类装置之间,其参数介于美国MST和意大利的RFX之间。KTX真空室壁厚仅为6 mm,属于非标准环形薄壳结构,其结构的稳定性分析是确定结构设计是否合理的关键因素。本文利用有限元的方法,对KTX真空室结构进行了线性和非线性屈曲分析。得到了两种情形下应力和变形加载曲线。通过对计算结果的对比和分析,验证了目前真空室结构的稳定性符合要求,并具有一定的安全裕度。 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