论文标题
导体的平面应变优化和结构分级在托卡马克环形线圈的内腿中
Plane strain optimization of conductor and structure grading in the inner leg of a Tokamak toroidal field coil
论文作者
论文摘要
我介绍了在托卡马克环形磁场线圈内腿中结构和导体分级的分析平面应变优化的结果。假定线圈是由僵硬的导管网格内的软导体区域制成的。变异的计算用于确定该结构的最佳轮廓。发现最佳解决方案是两层。外层仅被屈曲，不楔入，并且结构分数是分级的，因此所有结构都处于均匀的应力。内层是一个先进的屈曲缸，类似于佛罗里达苦板，其径向刚度被调节，因此其方位角应力是均匀的。这样的高级屈曲缸将需要高级制造才能制造。这些结果应视为上限，而不是可实现的性能。由这种优化产生的概念，例如通过钻孔或切割选择性软化的弯曲缸的层，可能用于以较不优化的形式进行真实设计。
I present the results of the analytic plane strain optimization of the structure and conductor grading in the inner leg of a Tokamak toroidal field coil. The coil is assumed to be made of regions of soft conductor inside a stiff grid of conduit. Calculus of variations is used to determine the optimal profile of this structure. The optimal solution is found to be two-layered. An outer layer is bucked only, not wedged, and the structure fraction is graded so that all structure is at a uniform stress. An inner layer is an advanced bucking cylinder, similar to a Florida Bitter plate, whose radial stiffness is tuned so that its azimuthal stress is uniform. Such an advanced bucking cylinder would require advanced manufacturing to fabricate. These results should be seen an upper limits rather than achievable performance. Concepts that arise from this optimization, such as selectively softening layers of the bucking cylinder by drilling or cutting, may be of use to real designs in a less-optimized form.
