Abstract: Aiming at the stability problem of a new type of straight-arm aerial vehicle developed by a company, the stability analysis and optimization design of the whole machine were carried out. First of all, the SolidWorks software was used to establish 3D model, the model was introduced into the ADAMS, and the dynamic model of the whole vehicle was established by using ADAMS software. Then, according to the national standard, the stability of the working vehicle was divided into three conditions: horizontal plane, inclined plane and operation stability test, and it was found that the stability of the working vehicle did not meet the requirements. Finally, in order to improve the stability, the counterweight was appropriately increased, but there was still local instability phenomenon. The finite element analysis method and the Abaqus software were used to design the telescopic arm of the working vehicle. The experiment results show that the volume of the telescopic arm is reduced to 70%, the stress and deformation of the telescopic arm are within an acceptable range, and the ground support to the four tires can reach 1 300 N. It does not only improves the stability of the working vehicle, but also reduces the production cost.

Key words:  straightarm aerial work vehicle; stability simulation analysis; dynamic model; finite element analysis

WANG Ji-zhong, SUN Ya-nan, ZHANG Xi-long, et al. Stability simulation analysis and optimization of straight-arm aerial vehicle［J］.Journal of Mechanical & Electrical Engineering, 2021,38(8):975-981.