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Failure Mechanisms and Structural Optimization of Shredder Hammer for Metal Scraps 被引量:1
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作者 ZHOU Xianyan HU Zhili +2 位作者 TAO Yijun QIN Xunpeng HUA Lin 《Chinese Journal of Mechanical Engineering》 SCIE EI CAS CSCD 2016年第4期792-801,共10页
Recycling retired cars can relieve the environmental pollution and resource waste efficiently.However,a few publications can be found on the failure mechanisms and optimization method of recycling equipment,shredders.... Recycling retired cars can relieve the environmental pollution and resource waste efficiently.However,a few publications can be found on the failure mechanisms and optimization method of recycling equipment,shredders.Thus,the failure mechanisms and structural optimization of shredder hammers for retired cars are studied aiming improving shredding efficiency and reducing cost.Failure types of shredder hammer are studied theoretically,and it is found that wear failure and fatigue failure are the two main failure types of shredder hammer.The shredding process of metal scraps is analyzed by finite element method,and it can be divided into four stages based on the stress states:initial stage,collision stage,grinding stage and separation stage.It is proved that the shredding efficiency can be improved by increasing cutouts on the hammer head.Finally,it is determined that the hammer with two cutouts is the optimal structure for metal scraps,which can improve the shredding efficiency by 20% and lengthen the hammer life by 15%.This study provides scientific basis for the industry application and theoretical foundation for further research. 展开更多
关键词 Metal scraps recycling impacts grinding structural optimization
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