| MECHANICAL ENGINEERING |
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Nonlinear dynamic characteristics of bolted joints for various pretension forces |
| ZHAO Tong1, GUO Junjie1, LÜ Yuhong2 |
1. Department of Mechanical Engineering, Tsinghua University, Beijing 100084, China;
2. AECC Shenyang Engine Research Institute, Shenyang 110015, China |
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Abstract The influence of the bolt pretension force on the dynamic characteristics of bolted joints was studied using a double bolt joint with an equivalent single DOF model based on the lumped parameter method near the first mode. Then, the equivalent dynamic parameters were obtained for various bolt preloadings using modal and excitation tests. The equivalent nonlinear dynamic parameters for the joint were then identified using the force-state mapping method for various pretension forces. The results show that the joint nonlinearity increases with decreasing pretension force. Therefore, the nonlinear joint dynamics must be considered for low pretension forces.
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| Keywords
bolted joints
pretension force
dynamic characteristics
parameter identification
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Issue Date: 27 August 2019
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[1] IBRAHIM R A, PETTIT C L. Uncertainties and dynamic problems of bolted joints and other fasteners[J]. Journal of Sound and Vibration, 2005, 279(3-5):857-936.
[2] 叶佩青, 王仁彻, 赵彤, 等. 机床整机动态特性研究进展[J]. 清华大学学报(自然科学版), 2012, 52(12):1758-1763. YE P Q, WANG R C, ZHAO T, et al. Recent research advances of whole machine tool dynamics[J]. Journal of Tsinghua University (Science and Technology), 2012, 52(12):1758-1763. (in Chinese)
[3] 蔡力钢, 王峰, 李玲, 等. 栓接结合部动态特性研究进展[J]. 机械工程学报, 2013, 49(9):158-168. CAI L G, WANG F, LI L, et al. Review on dynamic properties of bolted joints[J]. Journal of Mechanical Engineering, 2013, 49(9):158-168. (in Chinese)
[4] ČELIČ D, BOLTEŽAR M. Identification of the dynamic properties of joints using frequency-response functions[J]. Journal of Sound and Vibration, 2008, 317(1-2):158-174.
[5] 董冠华, 殷勤, 殷国富, 等. 机床结合部动力学建模与辨识方法的研究[J]. 机械工程学报, 2016, 52(5):162-168. DONG G H, YIN Q, YIN G F, et al. Research on dynamics modeling and identification of machine tool joints[J]. Journal of Mechanical Engineering, 2012, 52(5):162-168. (in Chinese)
[6] 张辉, 于长亮, 王仁彻, 等. 机床支撑地脚结合部参数辨识方法[J]. 清华大学学报(自然科学版), 2014, 54(6):815-821. ZHANG H, YU C L, WANG R C, et al. Parameters identification method for machine tool support joints[J]. Journal of Tsinghua University (Science and Technology), 2014, 54(6):815-821. (in Chinese)
[7] 张学良, 范世荣, 温淑花, 等. 基于等效横观各向同性虚拟材料的固定结合部建模方法[J]. 机械工程学报, 2017, 53(15):141-147. ZHANG X L, FAN S R, WEN S H, et al. Modeling method of fixed joint interfaces based on equivalent transversely isotropic virtual material[J]. Journal of Mechanical Engineering, 2017, 53(15):141-147. (in Chinese)
[8] 孙清超, 黄庆涛, 孙志勇, 等. 基于梯度虚拟材料的栓接结合部连接参数表征[J]. 机械工程学报, 2018, 54(11):102-109.SUN Q C, HUANG Q T, SUN Z Y, et al. Interface parameter identification of bolted connections based on gradient virtual material[J]. Journal of Mechanical Engineering, 2018, 54(11):102-109. (in Chinese)
[9] 李玲, 蔡力钢, 蔡安江, 等. 不同预紧力下栓接结合部切向等效特性[J]. 振动、测试与诊断, 2013, 33(1):82-87. LI L, CAI L G, CAI A J, et al. Tangential equivalent properties of the bolted joints in different preload[J]. Journal of Vibration, Measurement & Diagnosis, 2013, 33(1):82-87. (in Chinese)
[10] WANG M, WANG D, ZHENG G T. Joint dynamic properties identification with partially measured frequency response function[J]. Mechanical Systems and Signal Processing, 2012, 27:499-512.
[11] 陈学前, 杜强, 冯加权. 螺栓连接非线性振动特性研究[J]. 振动与冲击, 2009, 28(7):196-198. CHEN X Q, DU Q, FENG J Q. Nonlinear vibrational characteristic of bolt-joints[J]. Journal of Vibration and Shock, 2009, 28(7):196-198. (in Chinese)
[12] 蔡力钢, 李玲, 郭铁能, 等. 基于力状态映射法辨识非线性结合部动态参数[J]. 机械工程学报, 2011, 47(7):65-72. CAI L G, LI L, GUO T N, et al. Identification of nonlinear joint parameters with force-state mapping method[J]. Journal of Mechanical Engineering, 2011, 47(7):65-72. (in Chinese)
[13] 孙伟, 李星占, 韩清凯. 螺栓联接梁结构结合部非线性特性参数辨识[J]. 振动工程学报, 2013, 26(2):185-191. SUN W, LI X Z, HAN Q K. Nonlinear joint parameter identification for bolted beam structure[J]. Journal of Vibration Engineering, 2013, 26(2):185-191. (in Chinese)
[14] WORDEN K, TOMLINSON G R. Nonlinearity in structural dynamics:Detection, identification, and modeling[M]. Bristol:Institute of Physics Publishing, 2001.
[15] MASRI S F, CAUGHEY T K. A nonparametric identification technique for nonlinear dynamic problems[J]. Journal of Applied Mechanics, 1979, 46(2):433-447.
[16] CRAWLEY E F, O'DONNELL K J. Force-state mapping identification of nonlinear joints[J]. AIAA Journal, 1987, 25(7):1003-1010.
[17] CRAWLEY E F, AUBERT A C. Identification of nonlinear structural elements by force-state mapping[J]. AIAA Journal, 1986, 24(1):155-162. |
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2019,
Vol. 59
