薄壁延伸式八角环弹性体的计算机辅助设计
摘要
本论文通过对薄壁延伸式传感器弹性元件的分析研究,在ANSYS 下建立了弹性元件的有限元力学模型,并通过实验验证了ANSYS 建模的合理性。
用逐一改变结构参数,不改变载荷的方法研究弹性体的应变输出的变化,建立了应变输出与结构参数的相应关系。并且首次将ANSYS 谐波响应分析应用到分析八角环传感器的动态特性。对照实验对模型进行了验证。
对由偏载和相间干扰产生的输出误差进行了分析,并推算了标定公式。
通过采用特定结构,避免了贴片区产生大的应变梯度,保证了传感器输出的线性度。并用分步优化的方法对弹性体的应变输出进行了优化,保证了传感器的三向灵敏度。
The sensor technique, communicate technique and computer technique arethe three mainstay technique of modern times information industry, whichseparately make up of “sense organ”, “nerve”and “cerebra”of modern timesinformation technique system. Therefore, sensor is the chiefly parts of informationcollecting system, and the sensor technique is the important technique basis ofmodern information times.
Because of its predominant ratio of price and capability as well as itsanti-jamming ability, the electric-resistance strain sensor is widely used in the fieldof mechanic measuring technique. These kinds of sensors have become themainstream of measuring force and weighing. Octagonal Ring Dynamometer isone kind of electric-resistance strain sensor, which can measure multi-axis force.Because its organization is much complicated, there was not a mature theory ofdesign method.
The general characters of the sensor and elastomer component can generallybe divided into static characteristic and dynamic characteristic. The static characterof the sensor mainly includes linear degree, sensitivity, and repetitiveness.Generally,dynamic characteristic of sensor is studied by the respond to transientstate to be and one dynamic characteristic from when land and frequently landrespect of two pieces adopt there aren't law and frequency.
The elastic component is in conformity with the request of satisfying: Thestress of any part of the component must not exceed the material elastic limit, thereshould be enough strain amount in the position of pasting the strain slice, it is littlefor deformation amount to try one's best, is it shake frequency relatively high byoneself to demand generally.
Existing elastic mechanics is very difficult to this kind of irregular elasticcalculation, with the development of finite element theory, for analyse peoplecomplicated structure there is an effective tool, that is finite element analysis. Thistext analyses the elastomer by way of finite element. Use the finite element toanalyze that software ANSYS carries on elastic component analysis. To analyzingthat the part not very important has been simplified, it was the finite element
modeling that the entity modeling method from bottom to top will be carried onthat was adopted. That use is that ANSYS parameter design languages in themodeling course --Method of APDL. A division (Fig. 1) of scheme for usingSOLID92 unit and SOLID95 is selected through several contrasted elastomermodeling. Fig 1 Load on the model, then calculate. After the solution is done, take out thestrain of sticking scene of districts, calculate three outputs of elastomer byequation(1). Compare the result of calculation with the strain got from the ? = (ε3 +ε4' +ε5 +ε6' ?ε5' ?ε6 ?ε3' ?ε4)? K ?e?10?3 1 ?EX ???EY 4 = (ε1 + ε1' +ε2 +ε2' ?ε7 ?ε7' ?ε8 ?ε8' )? K ?e?10?3 1 (1) ? 4 ? = (ε9 +ε9' ?ε10 ?ε10' )? K ?e?10?3 1 ??EZ 4 EZ —Voltage of output of the electric bridge (mv) K—Sensitive coefficient of strain εi—Alittlestrain(με) e—Support the voltage of the bridge (v)experiment under the same load situation, we can draw such a conclusion, that thestatic characteristic of the elastomer finite element model set up with ANSYScorresponds to reality well.Utilize the harmonic response analysis of ANSYS toiv
用逐一改变结构参数,不改变载荷的方法研究弹性体的应变输出的变化,建立了应变输出与结构参数的相应关系。并且首次将ANSYS 谐波响应分析应用到分析八角环传感器的动态特性。对照实验对模型进行了验证。
对由偏载和相间干扰产生的输出误差进行了分析,并推算了标定公式。
通过采用特定结构,避免了贴片区产生大的应变梯度,保证了传感器输出的线性度。并用分步优化的方法对弹性体的应变输出进行了优化,保证了传感器的三向灵敏度。
The sensor technique, communicate technique and computer technique arethe three mainstay technique of modern times information industry, whichseparately make up of “sense organ”, “nerve”and “cerebra”of modern timesinformation technique system. Therefore, sensor is the chiefly parts of informationcollecting system, and the sensor technique is the important technique basis ofmodern information times.
Because of its predominant ratio of price and capability as well as itsanti-jamming ability, the electric-resistance strain sensor is widely used in the fieldof mechanic measuring technique. These kinds of sensors have become themainstream of measuring force and weighing. Octagonal Ring Dynamometer isone kind of electric-resistance strain sensor, which can measure multi-axis force.Because its organization is much complicated, there was not a mature theory ofdesign method.
The general characters of the sensor and elastomer component can generallybe divided into static characteristic and dynamic characteristic. The static characterof the sensor mainly includes linear degree, sensitivity, and repetitiveness.Generally,dynamic characteristic of sensor is studied by the respond to transientstate to be and one dynamic characteristic from when land and frequently landrespect of two pieces adopt there aren't law and frequency.
The elastic component is in conformity with the request of satisfying: Thestress of any part of the component must not exceed the material elastic limit, thereshould be enough strain amount in the position of pasting the strain slice, it is littlefor deformation amount to try one's best, is it shake frequency relatively high byoneself to demand generally.
Existing elastic mechanics is very difficult to this kind of irregular elasticcalculation, with the development of finite element theory, for analyse peoplecomplicated structure there is an effective tool, that is finite element analysis. Thistext analyses the elastomer by way of finite element. Use the finite element toanalyze that software ANSYS carries on elastic component analysis. To analyzingthat the part not very important has been simplified, it was the finite element
modeling that the entity modeling method from bottom to top will be carried onthat was adopted. That use is that ANSYS parameter design languages in themodeling course --Method of APDL. A division (Fig. 1) of scheme for usingSOLID92 unit and SOLID95 is selected through several contrasted elastomermodeling. Fig 1 Load on the model, then calculate. After the solution is done, take out thestrain of sticking scene of districts, calculate three outputs of elastomer byequation(1). Compare the result of calculation with the strain got from the ? = (ε3 +ε4' +ε5 +ε6' ?ε5' ?ε6 ?ε3' ?ε4)? K ?e?10?3 1 ?EX ???EY 4 = (ε1 + ε1' +ε2 +ε2' ?ε7 ?ε7' ?ε8 ?ε8' )? K ?e?10?3 1 (1) ? 4 ? = (ε9 +ε9' ?ε10 ?ε10' )? K ?e?10?3 1 ??EZ 4 EZ —Voltage of output of the electric bridge (mv) K—Sensitive coefficient of strain εi—Alittlestrain(με) e—Support the voltage of the bridge (v)experiment under the same load situation, we can draw such a conclusion, that thestatic characteristic of the elastomer finite element model set up with ANSYScorresponds to reality well.Utilize the harmonic response analysis of ANSYS toiv
引文
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[12]. 张金龙旋耕刀传感器的研究传感器技术2001 年第20 卷第7 期
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[15]. 王龙山张惠新魏福玉王杰高精度柱式秤重传感器弹性体的计算机辅助优化设计吉林工业大学学报1991 第四期
[16]. 李晓豁三向力传感器的设计及其标定黑龙江矿业学院学报第9卷第3 期1999 年9 月
[17]. 刘毅弘沈平子施昌彦称重传感器的最新发展动态现代计量测试 1995 年第5 期
[18]. 施昌彦动态称重测力技术的现状和发展趋势计量学报第22 卷第3 期2001 年7 月
[19]. 刘子建等计算机辅助设计(CAD)原理与应用技术湖南大学出版社1998
[20]. 林美红CAD/CAE 技术在称重传感器设计中的应用北京轻工业学院学报1999 年12 月
[21]. 李雪凤剪切梁式称重传感器的CAD/CAE 吉林大学硕士学位论文
[22]. 魏福玉房蔓楠应变梯度对传感器弹性体非线形的影响及应用计量学报v01.15 1994.2
[23]. 赵思宏,田春艳,范惠林平行梁式称重传感器的有限元分析光学精密工程第10 卷第2 期2002 年4 月
[24]. 张惠新朱目成魏福玉郑明杨平行梁秤重传感器的偏载误差分析东北地区秤重传感器学术会议论文1988 年8 月
[25]. 朱目成曹剑柱式测力传感器弹性元件的计算机辅助分析传感器技术1996 年第四期
[26]. 朱目成王雅萍张惠新柱式力传感器计算机辅助优化设计仪器技术与传感器1995 年
[27]. 王雅萍朱目成尹帮信双环测力传感器弹性元件的有限元分析西南工学院学报第13 卷第2 期1998 年6 月
[28]. 蒋海燕袁峰陈中丁振良串联结构的电阻应变式测力传感器传感器技术1999 年第18 卷第3 期
[29]. 朱子健刘旭初电阻应变式称重传感器的滞后补偿信号处理2000.6
[30]. 夏铁梅何闻力传感器动标输入信号的理论研究理论与实践2002 年第22 卷第4 期
[31]. 张金龙旋耕机微机测试系统的设计农机化研究2001 年8 月
[32]. 张惠新魏福玉柳杰陶永兰高精度传感器非线形误差的研究自动化仪表vol 14.No.11.1993
[33]. 王国强实用工程数值模拟技术及其在ANSYS 上的实践西北工业大学出版社1999
[34]. 李雪凤专题文献阅读2000 10
[35]. 王国泰易秀芳王理丽六维力传感器发展中的几个问题机器人
[2].O’Dogherty M N: A dynamometer to measure the forces on a sugar beet topping knife[J].J.Agric.Engin.Res.,1975,20:339-345.
[3].MARTINJ HAIGH: An Introduction to Computer-Aided Design and Manufacature
[4].K Ho-le: Finite element mesh generation methods: a review and classification Computer-Aided Design Vol 20,No.1 Jan/Feb,1988
[5].Lo S H: Automatic mesh generation and adaption by using contans Int .J.Numer . Methods Eng.1991
[6].OIML R74 “Electionic Weighting Instruments”First Draft Revision.July,1990
[7].Strain Gage Soldering Techniques,Tech. Tip TT609, Measurements Group, Inc, 1986.
[8].Strain Gage Clamping Techniques Tech. Tip TT610, Measurements Group, Inc, 1986.
[9].Cecil G Armstrong: Modeling Requirements for Finite-Element Analysis. Computer-Aided Design.Vol.26.No.7.July,1994.
[10]. 魏福玉用CAD 技术设计传感器弹性体长春邮电学院学报vol.13 100.4 1995
[11]. 高霁杨玉海三向测力仪的自动标定系统研究沈阳航空工业学院学报2001 年3 月第18 卷第1 期
[12]. 张金龙旋耕刀传感器的研究传感器技术2001 年第20 卷第7 期
[13]. 吴兴惠王彩君传感器与信号处理电子公业出版社1998 年8 月
[14]. 杨兆建王勤贤测力传感器研究发展综述太原理工大学山西机械第1 期(总第118 期) 2003 年3 月
[15]. 王龙山张惠新魏福玉王杰高精度柱式秤重传感器弹性体的计算机辅助优化设计吉林工业大学学报1991 第四期
[16]. 李晓豁三向力传感器的设计及其标定黑龙江矿业学院学报第9卷第3 期1999 年9 月
[17]. 刘毅弘沈平子施昌彦称重传感器的最新发展动态现代计量测试 1995 年第5 期
[18]. 施昌彦动态称重测力技术的现状和发展趋势计量学报第22 卷第3 期2001 年7 月
[19]. 刘子建等计算机辅助设计(CAD)原理与应用技术湖南大学出版社1998
[20]. 林美红CAD/CAE 技术在称重传感器设计中的应用北京轻工业学院学报1999 年12 月
[21]. 李雪凤剪切梁式称重传感器的CAD/CAE 吉林大学硕士学位论文
[22]. 魏福玉房蔓楠应变梯度对传感器弹性体非线形的影响及应用计量学报v01.15 1994.2
[23]. 赵思宏,田春艳,范惠林平行梁式称重传感器的有限元分析光学精密工程第10 卷第2 期2002 年4 月
[24]. 张惠新朱目成魏福玉郑明杨平行梁秤重传感器的偏载误差分析东北地区秤重传感器学术会议论文1988 年8 月
[25]. 朱目成曹剑柱式测力传感器弹性元件的计算机辅助分析传感器技术1996 年第四期
[26]. 朱目成王雅萍张惠新柱式力传感器计算机辅助优化设计仪器技术与传感器1995 年
[27]. 王雅萍朱目成尹帮信双环测力传感器弹性元件的有限元分析西南工学院学报第13 卷第2 期1998 年6 月
[28]. 蒋海燕袁峰陈中丁振良串联结构的电阻应变式测力传感器传感器技术1999 年第18 卷第3 期
[29]. 朱子健刘旭初电阻应变式称重传感器的滞后补偿信号处理2000.6
[30]. 夏铁梅何闻力传感器动标输入信号的理论研究理论与实践2002 年第22 卷第4 期
[31]. 张金龙旋耕机微机测试系统的设计农机化研究2001 年8 月
[32]. 张惠新魏福玉柳杰陶永兰高精度传感器非线形误差的研究自动化仪表vol 14.No.11.1993
[33]. 王国强实用工程数值模拟技术及其在ANSYS 上的实践西北工业大学出版社1999
[34]. 李雪凤专题文献阅读2000 10
[35]. 王国泰易秀芳王理丽六维力传感器发展中的几个问题机器人