[1]徐彬,陈南,王辉,等.基于接触单元法的复杂机构有限元分析[J].东南大学学报(自然科学版),2009,39(3):495-501.[doi:10.3969/j.issn.1001-0505.2009.03.015]
 Xu Bin,Chen Nan,Wang Hui,et al.FEA of complex mechanism based on contact element method[J].Journal of Southeast University (Natural Science Edition),2009,39(3):495-501.[doi:10.3969/j.issn.1001-0505.2009.03.015]
点击复制

基于接触单元法的复杂机构有限元分析()
分享到:

《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
39
期数:
2009年第3期
页码:
495-501
栏目:
机械工程
出版日期:
2009-05-20

文章信息/Info

Title:
FEA of complex mechanism based on contact element method
作者:
徐彬1 陈南1 王辉1 张秀伟2
1 东南大学机械工程学院, 南京 211189; 2 徐州海伦哲专用车辆有限公司, 徐州 221004
Author(s):
Xu Bin1 Chen Nan1 Wang Hui1 Zhang Xiuwei2
1 School of Mechanical Engineering, Southeast University, Nanjing 211189,China
2 Xuzhou Handler Special Vehicle Co. Ltd., Xuzhou 221004, China
关键词:
接触单元 自由度耦合 界面单元法 销轴连接 有限元
Keywords:
contact element degrees of freedom coupling interface element method pin connection finite element
分类号:
TH123
DOI:
10.3969/j.issn.1001-0505.2009.03.015
摘要:
针对混合臂式高空作业车作业臂的复杂构型,提出以三维接触有限元方法分析其强度.为了验证三维接触单元建模方法的有效性和分析影响结构应力分布的因素,首先以此方法对简支梁进行强度分析,并与传统的自由度耦合法、界面单元法和理论解析方法的分析结果进行比较.结果表明:接触单元法具有更高的精度; 接触摩擦系数和接触刚度因子对全局应力分布的影响很小,与理论分析结果的最大误差小于7%,而接触面间穿透量的允许误差因子的影响可以忽略.最后使用包含摩擦的接触单元法建立作业臂的有限元分析模型, 其中的液压缸支撑采用实体单元和弹簧单元综合建模的方式.通过与实验结果进行比较发现,有限元分析结果的误差低于15%,证明了此分析方法具有良好的精度和实用性.
Abstract:
For the complex structure of a hybrid mode aerial working mechanism, a three dimensional contact element method is proposed for its strength analysis. In order to validate the precision of this method and to analyze the influence factors of global stress distributions, strength analysis of a simply supported beam was adopted firstly by this method, and then compared with traditional degrees of freedom(DOFs)coupling, an interface element method and theoretical solutions. The results indicate that the contact element method is more precise; frictional coefficient and stiffness factors have only a little influence on global stress distributions, the maximum tolerance is less than 7%, and the effect of penetration tolerance factors can be ignored. Finally the finite element model of the whole mechanism is set up by the contact element method involving frictions, where solid elements and spring elements are integrated to build the model of a hydraulic system. Compared with the test results the tolerance of analysis results is lower than 15%, which proves that the contact element method is precise and can be widely applied in practice.

参考文献/References:

[1] 石端伟,宋晓辉,朱惠华.TC2400型塔带机结构的有限元分析[J].工程机械,2005,36(12):28-32.
  Shi Duanwei,Song Xiaohui,Zhu Huihua.Finite element analysis on the structur e of model TC2400 tower crane conveyor [J]. Construction Machinery and Equipment,2005,36(12):28-32.(in Chinese)
[2] 赵伟民,郭峰,李瑰贤.SYR200型旋挖钻机桩架整体有限元分析中销轴连接模型的研究[J].工程机械,2005,36(11):19-22.
  Zhao Weimin,Guo Feng,Li Guixian.A study on pin connection model in finite element analysis on complete pile frame of model SYR200 rotary pile drill [J]. Construction Machinery and Equipment,2005,36(11):19-22.(in Chinese)
[3] 颜东煌,刘雪锋,田仲初,等.销轴连接结构的接触应力分析[J].工程力学,2008,25(1):229-240.
  Yan Donghuang,Liu Xuefeng,Tian Zhongchu,et al.Contact stress analysis of pinned connection [J]. Engineering Mechanics,2008,25(1):229-240.(in Chinese)
[4] Ciavarella M,Hills D A,Monno G.Contact problems for a wedge with rounded apex [J].Int J Mech,1998,40(10):977-988.
[5] Elkilani Y S.A hybrid elasticity and finite element method for three-dimensional contact problems with friction [D].Cincinnati,USA:the College of Engineering of University of Cincinnati,2003.
[6] Barbera J R,Ciavarella M.Contact mechanics [J].International Journal of Solids and Structures,2000,37(1/2):29-43.
[7] Adams G G,Nosonovsky M.Contact modeling-forces[J].Tribology International,2000,33(5):431-442.
[8] Mayer M H,Gaul L.Segment-to-segment contact elements for modeling joint interfaces in finite element analysis [J].Mechanical Systems and Signal Processing,2007,21(2):724-734.
[9] McMeeking R M,Landis C M,Jimenez S M A.A principle of virtual work for combined electrostatic and mechanical loading of materials [J].International Journal of Non-linear Mechanics,2007,42(6):831-838.
[10] Pietrzak G,Curnier A.Large deformation frictional contact mechanics:continuum formulation and augmented Lagrangian treatment [J].Comput Methods Appl Mech Engrg,1999,177(3/4):351-381.
[11] Laursen T A,Oancea V G.Automation and assessment of augmented Lagrangian algorithms for frictional contact problems [J].Journal of Applied Mechanics,1994,61(4):956-963.

备注/Memo

备注/Memo:
作者简介: 徐彬(1981—),男,博士生; 陈南(联系人),男,博士,教授,博士生导师,nchen@seu.edu.cn.
基金项目: 江苏省国际合作交流重点资助项目(BZ2007001).
引文格式: 徐彬,陈南,王辉,等.基于接触单元法的复杂机构有限元分析[J].东南大学学报:自然科学版,2009,39(3):495-501. [doi:10.3969/j.issn.1001-0505.2009.03.015]
更新日期/Last Update: 2009-05-20