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机电系统全寿命模糊数值模拟
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作者 陈举华 史岩彬 沈学会 《模糊系统与数学》 CSCD 2004年第1期109-115,共7页
重大机电产品可靠性研究具有广阔的工程背景和较高的经济效益,但其可靠性试验常造成资源浪费和环境污染。为使此类系统可靠性研究可持续发展,介绍一类可采用的模糊-灰色模拟方法,以及虚拟样机技术在此领域的最新突破,同时文中加以丰实... 重大机电产品可靠性研究具有广阔的工程背景和较高的经济效益,但其可靠性试验常造成资源浪费和环境污染。为使此类系统可靠性研究可持续发展,介绍一类可采用的模糊-灰色模拟方法,以及虚拟样机技术在此领域的最新突破,同时文中加以丰实的工程实例验证。 展开更多
关键词 机电系统 模糊数值模拟 模糊贴近度 全寿命预测 模糊幂集 虚拟样机
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Construction of reasonable pillar group for undersea mining in metal mine 被引量:5
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作者 Zhi-xiang LIU Tian LUO +3 位作者 Xiang LI Xi-bing LI Zhen HUAI Shao-feng WANG 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2018年第4期757-765,共9页
In order to achieve the safe mining in Sanshandao Gold Mine,five schemes of secure pillar group are designed.Using the method of the renormalization group,the failure mechanism of the pillar group is explored,and the ... In order to achieve the safe mining in Sanshandao Gold Mine,five schemes of secure pillar group are designed.Using the method of the renormalization group,the failure mechanism of the pillar group is explored,and the safety factor of the pillar system is also obtained.The displacement characteristics,stress-strain laws,distribution of plastic zone and damage range of different pillar group are analyzed using numerical calculation software FLAC3D.To determine a reasonable pillar group scheme,the pillar stability and roof deformation are utilized to evaluate the safety of the pillar group.In addition,the theory of fuzzy comprehensive evaluation is adopted to verify the optimal scheme.The pillar group with the lowest roof deformation value is chosen as the optimal plan,which renders a factor of safety of 2.06 for the pillar group.According to this scheme,pillars with the width of 10 m are set along the strike of undersea deposit with the interval of 50 m.Rib pillars of 15 m in width are set at the location of the exploration line of 127,151 and 167.The analysis can be used to provide guidance for optimal design of pillar structures in undersea mining. 展开更多
关键词 undersea mining pillar group scheme safety factor numerical simulation fuzzy comprehensive evaluation
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