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轻便式铲雪机刀齿参数的优化设计
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作者 姚嘉 韩明辉 +1 位作者 李昌健 于博 《佳木斯大学学报(自然科学版)》 CAS 2013年第6期887-889,共3页
在自行设计的轻便式铲雪机实用新型专利的基础上,对铲雪机的刀齿参数部分,利用有限元软件进行了优化仿真设计,最终得到的优化刀齿长度和刀齿角度分别为300mm和10度,这种有限元仿真优化的设计思路可以有效的应用于今后的产品研发中,以有... 在自行设计的轻便式铲雪机实用新型专利的基础上,对铲雪机的刀齿参数部分,利用有限元软件进行了优化仿真设计,最终得到的优化刀齿长度和刀齿角度分别为300mm和10度,这种有限元仿真优化的设计思路可以有效的应用于今后的产品研发中,以有效的降低设计开发成本和产品开发周期. 展开更多
关键词 铲雪机 刀齿参数 有限元分析 优化设计
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Fabrication of micro-flow channels on graphite composite bipolar plates using microplaning
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作者 万珍平 梁德杰 +1 位作者 陆龙生 汤勇 《Journal of Central South University》 SCIE EI CAS CSCD 2015年第8期2963-2970,共8页
A new method of manufacturing micro-flow channels on graphite composite bipolar plate(GCBPP) microplaning using specially designed multi-tooth tool is proposed. In this method, several or even dozens of parallel micro... A new method of manufacturing micro-flow channels on graphite composite bipolar plate(GCBPP) microplaning using specially designed multi-tooth tool is proposed. In this method, several or even dozens of parallel micro-flow channels ranging from 100 μm to 500 μm in width can be produced simultaneously. But, edge chippings easily occur on the rib surface of GCBPP during microplaning due to brittleness of graphite composites. Experimental results show that edge chippings result in the increase of contact resistance between bipolar plate and carbon paper at low compaction force. While the edge chippings scarcely exert influence on the contact resistance at high compaction force. Contrary to conventional view, the edge chippings can significantly improve performance of microfuel cell and big edge chippings outperform small edge chippings. In addition, the influence of technical parameters on edge chippings was investigated in order to obtain big, but not oversized edge chippings. 展开更多
关键词 microfuel cell graphite composite bipolar plate micro-flow channel microplaning edge chipping
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