Buckling technique and experiment on the concrete pump truck boom

2018 International Conference on Advanced Materials, Intelligent Manufacturing and Automation

材料科学;机械制造;运输工程

Ma, Hong-Feng^1,2 ; Lu, Yong-Neng^1,2 ; Guo, Xiao-Qiang^1

Jiangsu Xuzhou Construction Machinery Research Institute, Xuzhou

221004, China^1

State Key Laboratory of Intelligent Manufacturing of Advanced Construction Machinery, Xuzhou Construction Machinery Group, Xuzhou

221004, China^2

关键词: Buckling analysis;    Buckling instabilities;    Concrete pump truck;    Fracture experiments;    Fracture process;    Mechanical characteristics;    Non-linear finite-element analysis;    Structural strain;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/382/3/032029/pdf
DOI  :  10.1088/1757-899X/382/3/032029

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

Buckling analysis is very important to the structure of long boom, especially for heavy bearing load. In this paper, buckling and fracture process of concrete pump truck boom is studied based on plate-beam buckling theory. The experiment bench of concrete pump truck boom is designed, and the fracture experiment of concrete pump truck boom is carried out. According to the trace of structural strain, instability and fracture critical load of concrete pump truck boom is acquired. The mechanical characteristics of structural material are obtained by experiment, which are used in the nonlinear finite element analysis of concrete pump truck boom. The results show that, buckling instability of partial plate which lies at the side of compression happens easily when concrete pump truck boom is loaded. However the boom structure still has bearing ability in post buckling. Meanwhile, the geometric deforming calculation is proved through research and experiment results in this paper. This method of buckling analysis is often useful to the similar structures.