Strain variation on the reaction tank of high hydrogen content during hydrogen absorption- desorption cycles
Strain variation on the reaction tank of high hydrogen content during hydrogen absorption- desorption cycles
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高氢含量反应槽吸放氢循环过程中的应变变化
DOI：
10.1016/j.ijhydene.2012.12.011
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发表时间：
2013
影响因子：
7.2
通讯作者：
Zhu Wu
中科院分区：
文献类型：
--
作者：
Weiyuan Duan;Junlin Du;Zhenjie Wang;Y. Niu;Tiesheng Huang;Zhilin Li;Chao Pu;Zhu Wu
通过对贮氢合金反应槽内应变的测量，分析了贮氢合金在吸放氢循环过程中不同位置的应变变化。应变计设置在罐的各个位置。使用应变分析仪连续监测应变的变化。结果表明，在活化过程中，罐体发生了塑性变形，在后续的充放氢循环中，罐体虽然仍具有弹性变形能力，但塑性变形并没有变大。合金膨胀对罐体产生的应力超过8MPa。切向应变均大于纵向应变。纵向应变在各点相差不大，而槽中部的切向应变远大于两侧。堆积密度的不均匀性导致尾部的变形比头部严重。
The strain generated in a reaction tank of hydrogen storage alloys were measured in order to analyze strain variation in different locations during hydrogen absorption-desorption cycles. Strain gauges were set on the various locations of the tank. The change of strain was continuously monitored using the strain analyzer. The results indicate that plastic deformation had occurred during activation period, and it did not become larger in the later hydriding-dehydriding cycles though the tank still had the ability for elastic deformation. The stress induced by alloy swell on the tank was over 8 MPa. Tangential strain was greater than longitudinal strain in each place. There wasn't much more difference in Longitudinal at respective points while tangential strain in the middle part was much larger than that in two sides' parts of the tank. The nonuniform packing density lead the deformation tended to occur more serious in tail part than in head part.