Folding Failure and Improvement of Sun Shield of Toxic Goods Wagon Based on Simulation and Test

The paper describes the structure and failure of toxic goods wagon. Furthermore, the connection and corrosion of the wagon sun shield were investigated on site. According to the field analysis, the aerodynamic model of a group of five vehicles was established, and the stress of the sun shield under the aerodynamic load was analyzed. The finite element model was built and the static simulation analysis of four kinds of working cases was carried out. Two kinds of sun shield specimens with different thickness were manufactured, and the wagon was tested under the normal bolt condition and missed bolts condition. Based on the above research, the paper proposes the optimized scheme. Finally, the connection scheme of the sun shield is modified. The modified sun shield works well in service.