在对自主设计的秸秆水平环模成型机模孔进行受力分析基础上,对成型过程中模孔不同位置的力、成型功率、成型燃料密度与挤压力的关系进行了研究。利用电阻应变片传感器测量出不同结构参数的模具壁各点的应变值,通过力学变换计算其对应的正压力、摩擦力,分析力的分布规律。利用MATLAB推导出模孔挤出力函数,计算挤出功率理论值,分析模具壁上的各测试点的应变数据,结果表明应变最大的点位于进料腔与成型腔相交处,应力比较集中,易形变及发生接触疲劳,导致环模失效。
Abstract
This research was conducted in the force in the different location of die hole, briquetting power, the relationship between briquetting fuel density and extrusion pressure, on the basis of analysis about die hole of self-design ringmatrixpress. The research measured strain value on different points of different structural parameters of the mold wall using strain sensor and has calculated the positive pressure, friction force and regularities of distribution using the mechanics transformation. In this research, the function of extrusion force was calculated using MATLAB, the theoretical value of extrusion power was predicted and the strain value of different points of the mold wall were analyzed. The result showed that the largest of the strain in the contact point of feed cavity and into cavity. The stress of this point was the most concentrated. This area was most likely to occur as deformation and contact fatigue, leading to failure of loop die.
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参考文献
[1] 张齐生,马中青,周建斌.生物质气化技术的再认识[J].南京林业大学学报:自然科学版,2013,37(1):1-10.Zhang Q S,Ma Z Q, Zhou J B, History,challenge and solution of biomass gasification:a review[J]. Journal of Nanjing Forestry University:Natural Sciences Edition,2013,37(1):1-10.
[2] Fischer G, Schrattenholzer L. Global bioenergy potentials through 2050[J]. Biomass and Bioenergy, 2001, 20(3):151-159.
[3] 车战斌.生物质就地及时压缩成型技术[J].中国能源,2005,27(1):28-30.Che Z B.The technology of highzones of biomass pellet[J].Energy of China,2005,27(1):28-30.
[4] 吴创之,马隆龙.生物质能现代化利用技术[M].北京:化学工业出版社,2003.
[5] 吴云玉.基于生物质固体成型机理研究的环模疲劳寿命分析[D].济南:山东大学,2010.Wu Y Y. Fatigue life study of loop die basic on biomass pelletizing mechanism[D]. Jinan:Shangdong University,2010.
[6] 申树云,董玉平.生物质颗粒成型机的模具特性研究[J].太阳能学报,2010,31(1):132-136.Shen S Y,Dong Y P. The study on the loop die characteristics of biomass pelletizing[J].Solaris Sinica, 2010,31(1):132-136.
[7] Sudha P, Somashekhar H I, Rao S, et al.Sustainable biomass production for energy in India[J].Biomass and Bioenergy, 2003, 25(5):501-515.
[8] 李忠正.可再生生物质资源—木质素的研究[J].南京林业大学学报:自然科学版,2012,36(1):1-7.Li Z Z.Research on renewable biomass resource-lignin [J].Journal of Nanjing Forestry University: Natural Sciences Edition,2012,36(1):1-7.
[9] 杨明韶,张永,李旭英,等.粗纤维物料压缩过程的一般流变规律的探讨[J].农业工程学报,2002,18(l):136-137.Yang M S,Zhang Y,Li X Y, et al.The study of general rheological law of coarse fiber material compression process[J].Agricultural Engineering Journal, 2002,18(1):136-137.
[10] 胡建军,沈胜强,雷廷宙,等.秸秆颗粒成型机吨料电耗影响因素的试验研究[J].太阳能学报,2007,28(12):1350-1352.Hu J J,Shen S Q,Lei T Z, et al. Experimental investigation of factor for electricity consumption per ton material of straw particle forming machine[J].Acta Energiae Solaris Sinica, 2007,28(12): 1350-1352.
[11] Granada E.Fuel lignocelluloses briquettes die design and products study[J].Renewable Energy:Dec,2002,27(4):561-573.
[12] 范文海,范天铭.环模制粒机生产率理论计算及其影响因素分析[J].饲料加工,2011(6): 34-36.Fan W H,Fan T M.Productivity theory calculation and analysis of influence factors[J].Feed Processing,2011(6): 34-36.
[13] 朱海涛.生物质燃料颗粒成型机的研究与实验[D].哈尔滨:哈尔滨工程大学,2008.Zhu H T. Test and research on the biomass solidifying machine[D]. Harbin:Harbin Engineering University, 2008.
[14] 姜健飞,胡良剑,唐剑.数值分析及其MATLAB实验[M].北京:科学出版社,2004.
[15] 蔺海荣.材料力学[M].北京:国防工业出版社,2010.
基金
收稿日期:2012-10-30 修回日期:2013-01-25
基金项目:中央高校基本科研业务费专项资金项目(DL12BB08)
第一作者:谷志新,副教授,博士。*通信作者:徐凯宏,教授,博士。E-mail: Kaihong.xu@yahoo.com.cn。
引文格式:谷志新,徐凯宏,郑文超. 秸秆致密环模成型机模孔参数实验分析[J]. 南京林业大学学报:自然科学版,2013,37(6):165-168.
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