Journal of South China University of Technology(Natural Science) >

2015 , Vol. 43 >Issue 6: 71 - 76

DOI: https://doi.org/10.3969/j.issn.1000-565X.2015.06.011

Mechanical Engineering

Out-of-Plane Stability of Crane Jib with Double Ｒods Considering Flexibility of Fixed Joint

Expand
  • School of Mechatronics Engineering，Harbin Institute of Technology，Harbin 150001，Heilongjiang，China
王腾飞(1990-)，男，博士生，主要从事结构稳定与非线性研究．

Received date: 2014-10-08

  Revised date: 2015-03-13

  Online published: 2015-05-04

Supported by

Supported by the National Key Technology Research and Development Program of the Ministry of Science and Techology of China during the“12th Five-Year Plan”(2011BAJ02B01-02)

Fold

Abstract

Proposed in this paper is an analytical method for the out-of-plane stability analysis of crane jib with double rods． In this method，the effect of lateral flexibility of the fixed joint on the jib stability is considered，and a dimensionless lateral stiffness coefficient is introduced to measure the lateral constraint． Then，by establishing the deformation differential equation in the critical state，the characteristic equations of out-of-plane instability and the corresponding critical force are deduced． It is found that the analytical results are completely consistent with the ANSYS simulation results． Moreover，the expressions of the characteristic equations，respectively in two limited lateral stiffness conditions of the fixed joint and in the degradation case of the jib to single rod，are discussed，and the influence of lateral stiffness of the fixed joint on the stability of the jib is analyzed． The results show that a suitable increment of the lateral stiffness may significantly improve the stability of the jib until the lateral stiffness reaches a certain value．

Key words： double-rod crane jib; out-of-plane stability; differential equation method; fixed joint; lateral flexibility

Cite this article

Wang Teng-fei Lan Peng Lu Nian-li . Out-of-Plane Stability of Crane Jib with Double Ｒods Considering Flexibility of Fixed Joint[J]. Journal of South China University of Technology(Natural Science), 2015 , 43(6) : 71 -76 . DOI: 10.3969/j.issn.1000-565X.2015.06.011

Options
Outlines

/

〈 〉