Analysis on Fracture Causes of Sub-Frame of a Type of Dump Truck

Abstract:

Sub-frame of dump truck is a special equipment, which is used to avoid carriage of goods having stress concentration on the chassis frame, and its design rationality have very important influence on the using performance of whole vehicle. In this paper, according to the phenomenon that the sub-frame of a company's mining heavy-duty dump trucks often appear crack and even rupture, using finite element analysis method, the sub-frame has been carried on the static analysis in both cases that the normal load and eccentricity loading when unloading goods. The analysis result shows that the reason of crack and even rupture of secondary frame is stress concentration occurs in the shaft hole connecting balanced frame with sub-frame because of lateral centroid of goods deviating from the longitudinal symmetry plane caused by goods loading or overloading and maximum stress is beyond the material yield limit. The improvement suggestions of sub-frame design are put forward finally.

• Periodical: Applied Mechanics and Materials (Volumes 668-669)
• Pages: 142-146
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.668-669.142
• Online since: October 2014
• Authors: Zheng Li, Jia Hua Niu, Hai Gang Li
• Keywords: Finite Element, Fracture, Static Analysis, Sub-Frame

References

[1] Zhilin Wei, Yongchun Huang, Guanglie Shen, et al: JOURNAL OF MACHINE DESIGN. Vol. 25 (2008), p.67. (In Chinese).

[2] Jingping Si, Fengxia Tian, Lu Han, et al: Coal Mine Machinery. Vol. 31 (2010), p.112. (In Chinese).

[3] Junhui Yin, Zhilin Wei, Guanglie Shen: JOURNAL OF MACHINE DESIGN. Vol. 22 (2005), p.26. (In Chinese).

[4] Guidong Huang, Guanglie Shen, Yongchun Huang, et al: JOURNAL OF MACHINE DESIGN. Vol 24 (2007), p.54. (In Chinese).