Nonlinear Stability Calculation Method of Crane Lattice Boom with Large Slenderness Ratio

DOI

10.2991/icmea-16.2016.96How to use a DOI?

Keywords

Large slenderness ratio; Stability; Nonlinear; Limit state method; Generalized margin

Abstract

Aiming at the stability problem of crane lattice boom with large slenderness ratio, the applicability and practicability of four kinds of design theories and methods (the allowable stress method based on linear theory, the allowable stress method based on nonlinear theory, the limit state method based on linear theory and the limit state method based on nonlinear theory) are studied by taking VS2012 as development platform and programming multi-theoretical software for the stability calculation of crane lattice boom with large slenderness ratio using C# programming language. The optimal theory and method are obtained by comparing the generalized margin of above four methods. Practical example results show that the limit state method based on nonlinear theory has the minimum generalized margin and highest material utilization on the premise of meeting the stability of boom which illustrates the linear theory based on small displacement assumption is unsuitable for the stability design calculation of lattice boom with large slenderness ratio while the limit state method based on nonlinear theory is more suitable for the occasion that the relationship between load and internal force is nonlinear and the calculation results are more in line with actual situation. Finally, the optimal theory and methods are verified through ANSYS, it can be found that analytic results are in good agreement with finite element results which further explains the suitability and practicability of the limit state method based on nonlinear theory.

Copyright

© 2016, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Ge-Ning XU
AU  - Zhong-Yuan KANG
AU  - Heng YANG
AU  - Xin WANG
AU  - Jing LI
PY  - 2016/12
DA  - 2016/12
TI  - Nonlinear Stability Calculation Method of Crane Lattice Boom with Large Slenderness Ratio
BT  - Proceedings of the 3rd International Conference on Material Engineering and Application (ICMEA 2016)
PB  - Atlantis Press
SP  - 585
EP  - 595
SN  - 2352-5401
UR  - https://doi.org/10.2991/icmea-16.2016.96
DO  - 10.2991/icmea-16.2016.96
ID  - XU2016/12
ER  -