Mechanics & Industry
Volume 24, 2023
|Number of page(s)||10|
|Published online||09 January 2023|
Research on bearing capacity of cross-type truss boom with variable cross-section of Crawler cranes
School of Mechanical Engineering, Taiyuan University of Science and Technology, Taiyuan, PR China
2 Department of Computer Engineering, Taiyuan University, Taiyuan, PR China
* e-mail: firstname.lastname@example.org
Accepted: 16 November 2022
The web crossed truss boom is one of the commonly used truss boom structures of crawler cranes. However, the existing calculations fail to consider the limiting effect of the web members' bending resistance on the chord members, and cannot give full play to the load-bearing capacity of the existing structure. This paper takes the top section of the Crawler crane truss boom as the research object. The single-span truss theoretical model is established according to Timoshenko's elastic stability theory. And the theoretical critical load of the variable cross-section boom is obtained with full consideration of the limitation of the web member's bending resistance on the chord members. The finite element method simulation model is compared and verified. Compared with a large number of simulation experiments and theoretical calculations, it can be concluded that the theoretical calculations in this article are highly consistent with the simulation results, verified the assumptions that the web members' bending resistance help to improve the bending resistance of the chord members, and this will provide certain reference to the engineering designers.
Key words: Elastic stability theory / bending resistance of web members / variable cross-section / critical load
© Y. Fenglin et al., published by EDP Sciences 2023
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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