Abstract
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.
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