基于有限元法大型直线振动筛动态性能的分析
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摘要
直线振动筛有脱水、脱介、脱泥和筛分效果好等优点,是应用比较广泛的筛分产品之一。在振动筛的工作过程中,长期经受高频交变载荷的作用,筛箱的侧板、横梁等部件经常发生断裂。对于大型直线振动筛,这些问题更加突出,随着采煤机械化程度的提高,对振动筛的要求越来越大,因此,研究、设计、制造大型直线振动筛就就显得越发重要。
本文以原唐山某煤炭研究院研制的27m2大型直线振动筛为研究对象,针对国产振动筛易出现的横梁断裂,使用寿命相对较短等问题,从动力学和运动学角度出发,对该振动筛的动态性能进行分析。首先本文在研究振动筛的工作原理的基础上,对筛面上物料的运动学及振动筛动力学进行了分析研究,建立振动筛的力学模型;其次采用基于有限元法的ANSYS软件对振动筛进行建模,对大型直线振动筛进行静力学、模态、时间历程响应分析,与试验模态分析相结合,优化结构,确保振动筛能正常工作。最后针对大型直线振动筛使用寿命低的特点对振动筛重点位置进行疲劳寿命预测,为振动筛的设计、安装、使用提供参考。
本文采用有限元分析和实验模态分析等动态设计方法,为解决振动筛强度问题提供了一种新的结构改进方案,对振动筛的设计和制造具有指导意义。
The linear vibration screener with advantages of dehydration, sculping, desliming and effective screening ,is used widely for screening products. During the working process,the main parts of vibration screener endure long time high-frequency alternating loads,often resulting in crack on lateral board and beams. The strength problem is much more serious for large-scale linear vibration screener. With the increase in coal mining mechanization, the requirements on the vibration screening machine are increasing, therefore, the research,design, and manufacture on the large-scale linear vibration screener has become more important.
In this paper, a 27 m2 large-scale linear vibration screener were developed by the original Tangshan Coal Research Institute as the research object. In the view of the proning to beam fracture and the short operation life in domestic vibration screeners, from the perspective of dynamics and kinematics, this paper has dong dynamic performance analysis on the vibration screener. Firstly, in the study on the basis of working principle of vibration screener. Learn the kinematics of materials on the surface of screener and kinetics analysis of vibration screener, building the mechanical model of vibration screener; Secondly, The finite element analysis ANSYS software was applied to establish the finite element model of vibration screener. Deduced the static, modal, time-history of response, by the combining with experimental modal analysis. the structure has been optimized to ensure the vibration screener normal operation. Finally, for the low life of large-scale linear vibration screener, forcast the fatigue life of key location on the vibration screener, for reference. design, installation, use of vibration screener
In this paper, the finite element analysis and experimental modal analysis are used to solve the strength problem of vibration screener, It is provides a new structure modification program for solving vibration screener strength problem,and is meaningful for the design of vibrating screens.
本文以原唐山某煤炭研究院研制的27m2大型直线振动筛为研究对象,针对国产振动筛易出现的横梁断裂,使用寿命相对较短等问题,从动力学和运动学角度出发,对该振动筛的动态性能进行分析。首先本文在研究振动筛的工作原理的基础上,对筛面上物料的运动学及振动筛动力学进行了分析研究,建立振动筛的力学模型;其次采用基于有限元法的ANSYS软件对振动筛进行建模,对大型直线振动筛进行静力学、模态、时间历程响应分析,与试验模态分析相结合,优化结构,确保振动筛能正常工作。最后针对大型直线振动筛使用寿命低的特点对振动筛重点位置进行疲劳寿命预测,为振动筛的设计、安装、使用提供参考。
本文采用有限元分析和实验模态分析等动态设计方法,为解决振动筛强度问题提供了一种新的结构改进方案,对振动筛的设计和制造具有指导意义。
The linear vibration screener with advantages of dehydration, sculping, desliming and effective screening ,is used widely for screening products. During the working process,the main parts of vibration screener endure long time high-frequency alternating loads,often resulting in crack on lateral board and beams. The strength problem is much more serious for large-scale linear vibration screener. With the increase in coal mining mechanization, the requirements on the vibration screening machine are increasing, therefore, the research,design, and manufacture on the large-scale linear vibration screener has become more important.
In this paper, a 27 m2 large-scale linear vibration screener were developed by the original Tangshan Coal Research Institute as the research object. In the view of the proning to beam fracture and the short operation life in domestic vibration screeners, from the perspective of dynamics and kinematics, this paper has dong dynamic performance analysis on the vibration screener. Firstly, in the study on the basis of working principle of vibration screener. Learn the kinematics of materials on the surface of screener and kinetics analysis of vibration screener, building the mechanical model of vibration screener; Secondly, The finite element analysis ANSYS software was applied to establish the finite element model of vibration screener. Deduced the static, modal, time-history of response, by the combining with experimental modal analysis. the structure has been optimized to ensure the vibration screener normal operation. Finally, for the low life of large-scale linear vibration screener, forcast the fatigue life of key location on the vibration screener, for reference. design, installation, use of vibration screener
In this paper, the finite element analysis and experimental modal analysis are used to solve the strength problem of vibration screener, It is provides a new structure modification program for solving vibration screener strength problem,and is meaningful for the design of vibrating screens.
引文
[1]宋书中,周祖德,胡业发.振动筛分机械发展概述及新型振动筛研究初探.矿山机械.2006,4 (34):73-75
[2]郭年琴,匡永江.振动筛国内外研究现状及发展.技术与装备.2009,5: 26-27
[3]王永岩.邰英楼.大型直线振动筛动态仿真的研究.计算力学学报.2001,18(1):94-98
[4]尹建宏.直线振动筛横梁产生裂纹的原因分析.选煤技术.2004,20(6):22-25
[5]尹忠俊,刘建平,赵专东.交变载荷作用下大型振动筛的应力分析.2009,11 (40): 1363-1366
[6]闻邦椿,刘树英,何京力著.振动机械的理论与动态设计方法[M],北京:机械工业出版社.2001;55-90
[7]屈维德.唐恒龄主编著.机械振动手册[M].北京:机械工业出版社. 2002:133-200
[8]杜平安,甘娥中,于亚婷编著.有限元法-原理、建模及应用[M].北京:国防工业出版社.2004:100-130
[9]饶寿期编.有限元法和边界元法基础[M].北京:北京航空航天大学出版社.1990:90-121
[10]李文英.大型振动筛动力学分析及动态设计.博士学位论文.太原理工大学.2004
[11] Vorster, w.,Hinde, A. Schaefer, F... Increased screening efficiency using a Kroosher unit coupled with a Sweco screen. Minerals Engineering. South Africa.2002:107-110
[12]秦梁.振动筛可靠性问题及对策[J].煤矿机械,2000年10月,第1 0期,32-37
[13]严峰主编,严峰,刘焕胜编著.筛分机械[M].北京:煤炭工业出版社.1995:23-44
[14] S.Duym and J. Schoukens. Design of Excitation Signals for the Restoring Force Surface Method. Mechanical Systems and Signal Processing, 1995, 9, 139-158
[15] Wodzinski, P. Tendencies in screen design, Powder Handling& Processing.1993: 357-361
[16]“Mineral Processing-screen”《M&Q Annual Equipment Review》1990
[17] Wodzinski, P. Tendencies in screen design, Powder Handling& Processing.1993: 357-361
[18] N. Modal Excitation Products Zonic Corporation, Miford, Ohio, USA, 1981.
[19] N. Accelerometer Instruction& Selection Manual. Entran D evices Inc., Fairfield, N,J., USA, 1992
[20] Bentley. J. Principles of Measurement Systems Longham, London& New York, USA.
[21]赵海峰,蒋迪.ANSYS8.O工程结构实例分析.北京:中国铁道出版社.2004:155-187
[22]张朝晖.ANSYS工程应用范例入门与提高.北京:清华大学出版社.2004:200-234
[23]郝文化.ansys7.0实例分析与应用.北京:清华大学出版社.2004:220-240
[24]张西良,张建,李萍萍,万学功,杨伟玲.粉体物料流动性仿真分析.农业机械学报.2008,8 (39):196-198
[25]周国光,胡志国,贺兰湘,李清剑.大型直线振动筛物料结合系数与当量阻力系数计算.选煤技术.2008,4: 12-15
[26]李玉凤,李永志,潘东明,张学成,鲍玉新.直线振动筛运动学参数的确定.煤矿机械. 2008,3(29):33-34
[27]曹福东,郁松岩,提高ZD3061直线等厚振动筛处理量的探讨.露天采矿技术.2007,1: 58-59
[28]王红兵,张路霞.探析影响直线振动筛筛分效果的若干因素.现代制造技术与装备.2008, 4: 29-30
[29]杨伟,马星国,尤小梅.基于ANSYS的齿轮装配体模态分析[J].沈阳理工大学学报.27(4), 2008.8
[30]曹树谦,张文德,萧龙翔编著.振动结构模态分析—理论、实验与应用.天津:天津大学出版社.2001:198-222
[31]俞云书.结构模态实验分析.北京:宇航出版社.2000:78-113
[32]傅念方.振动模态分析与参数辩识.北京:机械工业出版社.1990:78-103
[33]魏铁华.现象相似、相似定理与相似指标求取.组成技术与生产现代化.1997,23(4)期:3-14.
[34]宋或,张贵文,党星海.相似理论内容的扩充与分析.兰州理工大学学报.2004,30(5)期:123-125
[35]俞云书.结构模态实验分析.北京:宇航出版社.2003:20-89
[36]沃德.海伦等著〔比利时],白化同,郭继忠译.模态分析理论与实验.北京:北京理工大学出版社.2001:32-110
[37]张思.振动测试与分析技术.北京:清华大学出版社.1992:44-46
[38]张德,孙艳平.大型振动筛动态仿真和模态分析实验综述.鞍山科技大学学报.2003,26(1)期:1-3
[39]张立,仲梁维.直线振动筛的动力学和疲劳分析.上海理工大学学报.2009,3(31):299-302
[40]杨红霞. ANSYS在铁路机车仿真疲劳分析的应用. CAD/CAM与制造业信息化.2009,1:82-84
[41]赵光菊,钟蜀晖.基于ANSYS的TA6V钛合金SENT试样疲劳分析.广西大学学报:自然科学版. 2009,3(34):419-423
[42]肖林京,隋秀华,苗德俊.基于ANSYS的带式输送机传动滚筒疲劳寿命分析研究.煤矿机械. 2008,11(29):28-30
[43]黄康,仰荣德.基于ANSYS的汽车横向稳定杆疲劳分析.机械设计.2008,12(25):66-68
[43]吴胜军,徐有良.基于ANSYS汽车变速箱主轴的疲劳分析.拖拉机与农用运输车.2008,5 (35):32-33
[44]汪昌安,赵斌.基于有限元技术的背压活塞的模态分析与疲劳寿命计算.科学技术与工程.2009,9(12).3472-3474
[45]师昌绪,钟群鹏,李成功。中国材料工程大典(第1卷材料工程基础).北京:化学工业出版社.2006:765-813
[46]马学东,王律躬,崔文好,高满旭.2ZKX2148型直线振动筛侧板的有限元动力力学分析[J].鞍山钢铁学院学报.1999,17(3):44-47
[47]郝文化. ANSYS 7.0实例分析与应用[M].北京:清华大学出版社.2004:220-240
[48]贺鑫.大型直线振动筛的动态仿真的研究,硕士学位论文,青岛:青岛科技大学,2008年
[49]王学文.潮湿原煤深度筛分理论及大型筛机动态设计的研究.博士学位论文.中国矿业大学. 2001
[50]张思.振动测试与分析技术.北京:清华大学出版社.1992:44-46
[51]兆奇.基于虚拟样机技术的焊接结构“虚拟疲劳试验”研究.硕士学位论文,大连:大连交通大学
[52]宫美英.大型振动筛系统与结构的动力学研究.硕士学位论文,秦皇岛:燕山大学
[2]郭年琴,匡永江.振动筛国内外研究现状及发展.技术与装备.2009,5: 26-27
[3]王永岩.邰英楼.大型直线振动筛动态仿真的研究.计算力学学报.2001,18(1):94-98
[4]尹建宏.直线振动筛横梁产生裂纹的原因分析.选煤技术.2004,20(6):22-25
[5]尹忠俊,刘建平,赵专东.交变载荷作用下大型振动筛的应力分析.2009,11 (40): 1363-1366
[6]闻邦椿,刘树英,何京力著.振动机械的理论与动态设计方法[M],北京:机械工业出版社.2001;55-90
[7]屈维德.唐恒龄主编著.机械振动手册[M].北京:机械工业出版社. 2002:133-200
[8]杜平安,甘娥中,于亚婷编著.有限元法-原理、建模及应用[M].北京:国防工业出版社.2004:100-130
[9]饶寿期编.有限元法和边界元法基础[M].北京:北京航空航天大学出版社.1990:90-121
[10]李文英.大型振动筛动力学分析及动态设计.博士学位论文.太原理工大学.2004
[11] Vorster, w.,Hinde, A. Schaefer, F... Increased screening efficiency using a Kroosher unit coupled with a Sweco screen. Minerals Engineering. South Africa.2002:107-110
[12]秦梁.振动筛可靠性问题及对策[J].煤矿机械,2000年10月,第1 0期,32-37
[13]严峰主编,严峰,刘焕胜编著.筛分机械[M].北京:煤炭工业出版社.1995:23-44
[14] S.Duym and J. Schoukens. Design of Excitation Signals for the Restoring Force Surface Method. Mechanical Systems and Signal Processing, 1995, 9, 139-158
[15] Wodzinski, P. Tendencies in screen design, Powder Handling& Processing.1993: 357-361
[16]“Mineral Processing-screen”《M&Q Annual Equipment Review》1990
[17] Wodzinski, P. Tendencies in screen design, Powder Handling& Processing.1993: 357-361
[18] N. Modal Excitation Products Zonic Corporation, Miford, Ohio, USA, 1981.
[19] N. Accelerometer Instruction& Selection Manual. Entran D evices Inc., Fairfield, N,J., USA, 1992
[20] Bentley. J. Principles of Measurement Systems Longham, London& New York, USA.
[21]赵海峰,蒋迪.ANSYS8.O工程结构实例分析.北京:中国铁道出版社.2004:155-187
[22]张朝晖.ANSYS工程应用范例入门与提高.北京:清华大学出版社.2004:200-234
[23]郝文化.ansys7.0实例分析与应用.北京:清华大学出版社.2004:220-240
[24]张西良,张建,李萍萍,万学功,杨伟玲.粉体物料流动性仿真分析.农业机械学报.2008,8 (39):196-198
[25]周国光,胡志国,贺兰湘,李清剑.大型直线振动筛物料结合系数与当量阻力系数计算.选煤技术.2008,4: 12-15
[26]李玉凤,李永志,潘东明,张学成,鲍玉新.直线振动筛运动学参数的确定.煤矿机械. 2008,3(29):33-34
[27]曹福东,郁松岩,提高ZD3061直线等厚振动筛处理量的探讨.露天采矿技术.2007,1: 58-59
[28]王红兵,张路霞.探析影响直线振动筛筛分效果的若干因素.现代制造技术与装备.2008, 4: 29-30
[29]杨伟,马星国,尤小梅.基于ANSYS的齿轮装配体模态分析[J].沈阳理工大学学报.27(4), 2008.8
[30]曹树谦,张文德,萧龙翔编著.振动结构模态分析—理论、实验与应用.天津:天津大学出版社.2001:198-222
[31]俞云书.结构模态实验分析.北京:宇航出版社.2000:78-113
[32]傅念方.振动模态分析与参数辩识.北京:机械工业出版社.1990:78-103
[33]魏铁华.现象相似、相似定理与相似指标求取.组成技术与生产现代化.1997,23(4)期:3-14.
[34]宋或,张贵文,党星海.相似理论内容的扩充与分析.兰州理工大学学报.2004,30(5)期:123-125
[35]俞云书.结构模态实验分析.北京:宇航出版社.2003:20-89
[36]沃德.海伦等著〔比利时],白化同,郭继忠译.模态分析理论与实验.北京:北京理工大学出版社.2001:32-110
[37]张思.振动测试与分析技术.北京:清华大学出版社.1992:44-46
[38]张德,孙艳平.大型振动筛动态仿真和模态分析实验综述.鞍山科技大学学报.2003,26(1)期:1-3
[39]张立,仲梁维.直线振动筛的动力学和疲劳分析.上海理工大学学报.2009,3(31):299-302
[40]杨红霞. ANSYS在铁路机车仿真疲劳分析的应用. CAD/CAM与制造业信息化.2009,1:82-84
[41]赵光菊,钟蜀晖.基于ANSYS的TA6V钛合金SENT试样疲劳分析.广西大学学报:自然科学版. 2009,3(34):419-423
[42]肖林京,隋秀华,苗德俊.基于ANSYS的带式输送机传动滚筒疲劳寿命分析研究.煤矿机械. 2008,11(29):28-30
[43]黄康,仰荣德.基于ANSYS的汽车横向稳定杆疲劳分析.机械设计.2008,12(25):66-68
[43]吴胜军,徐有良.基于ANSYS汽车变速箱主轴的疲劳分析.拖拉机与农用运输车.2008,5 (35):32-33
[44]汪昌安,赵斌.基于有限元技术的背压活塞的模态分析与疲劳寿命计算.科学技术与工程.2009,9(12).3472-3474
[45]师昌绪,钟群鹏,李成功。中国材料工程大典(第1卷材料工程基础).北京:化学工业出版社.2006:765-813
[46]马学东,王律躬,崔文好,高满旭.2ZKX2148型直线振动筛侧板的有限元动力力学分析[J].鞍山钢铁学院学报.1999,17(3):44-47
[47]郝文化. ANSYS 7.0实例分析与应用[M].北京:清华大学出版社.2004:220-240
[48]贺鑫.大型直线振动筛的动态仿真的研究,硕士学位论文,青岛:青岛科技大学,2008年
[49]王学文.潮湿原煤深度筛分理论及大型筛机动态设计的研究.博士学位论文.中国矿业大学. 2001
[50]张思.振动测试与分析技术.北京:清华大学出版社.1992:44-46
[51]兆奇.基于虚拟样机技术的焊接结构“虚拟疲劳试验”研究.硕士学位论文,大连:大连交通大学
[52]宫美英.大型振动筛系统与结构的动力学研究.硕士学位论文,秦皇岛:燕山大学