Wang Anlin

Study on Structural Instability of Large Crawler Crane Boom Structure

Taking a certain large crawler crane boom as research object, the local buckling critical load is calculated by finite element analysis, and a full-range analysis for the boom structure is conducted. The analysis method of boom structure instability propagation process is established, and the true load response of actual structure is reconstructed. The results show that the dynamic effect is obvious after the occurrence of local instability accompanied with dynamic hopping. The research results of this paper have certain reference value to make measures for preventing the instability propagation, and also have guiding significance for the large boom structure design.

Transient Dynamic Analysis on Key Components of the Port Handling Machinery’s Planetary Gear System

In order to seek the dynamic response of gear transmission with time-varying loads, this paper presents a transient dynamic analysis on key components of the port handling machinery’s planetary gear system, and a finite element model of gear system is established. In a period of load-time history, the gear meshing process under external loads’ effect is simulated dynamically and the gear’s transient dynamic response is analyzed systematically. The study can provide a reference for the full and accurate analysis of the physical state of the design objects, economic and reasonable structure design. Meanwhile, it can supply basic data for building fault diagnosis monitoring model of gear system.