Reliability Assessment for Load Bearing Underframe on Car Body

Ai Qin Tian; Hao Dong

doi:10.4028/www.scientific.net/AMM.633-634.1206

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 633-634Reliability Assessment for Load Bearing Underframe...

Reliability Assessment for Load Bearing Underframe on Car Body

Abstract:

The security assessment of large underframe on car body is proposed through the SINTAP/FITNET method and with the help of numerical simulation technology of finite element based on some EMU powered car in service at present. The security and reliability of the underframe structure is predicted. The defect tolerance that the underframe is ‘fitness for service’ is put forward in this paper. The result shows that the crack shape a/c has little impact on the security with the semielliptic surface cracks assumption. In addition, the security assessment on dangerous areas and critical crack sizes are acquired based on the assumption a/c=0.2. The critical crack sizes of the dangerous area 1, area 2 and area 3 are about 5 to 5.5 millimeters, while the unilateral penetrate crack size of the area 4 reaches 40 millimeters. The structures are suit for service as the risk of brittle failure is extremely small.

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Periodical:

Applied Mechanics and Materials (Volumes 633-634)

Pages:

1206-1212

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.633-634.1206

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Online since:

September 2014

Authors:

Ai Qin Tian*, Hao Dong

Keywords:

Aluminium Alloy, Security Assessment, SINTAP/FITNET

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References

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