Mechanical Behavior Analysis of Wrecker Outrigger Based on Finite Element Method

Abstract

Mechanical behavior of the outriggers of wrecker is analyzed based on finite element method in this paper. According to actual working condition, detailed loading and boundary constraint are established by using analytical method. In order to validate the presented finite element model (FEM), stress test experiment is carried out and comparison analysis is also conducted. The maximum error value is smaller than 7.2%. This indicated that the proposed FEM has a good prediction accuracy which meets the engineering requirements. Mechanical behavior analysis shows that the outriggers have enough strength to bear the working load for the special wrecker analyzed in this paper. Moreover, effects of the material and location of sliders on the mechanical behavior of outriggers are also studied in this paper. Numerical analysis results show that the sliders play an important role in determining the bearing capacities of the outriggers and it should be considered detailedly in structure design process.

Keywords:

• Outrigger of wrecker
• slider
• mechanical behavior analysis
• finite element method
• stress test experiment

Additional information

Funding

The authors extend their appreciation to the Project of Shandong Province Higher Educational Science and Technology Program [KJ2018BBH018] and Doctoral Scientific Research Foundation of Zaozhuang University [2017BS05].