Development and Application of Fatigue Life Evaluation Software LtsFatigue Based on LiToSim

PENG Mengyao; GU Shuitao; ZHOU Yangjing; WANG Shimeng; FENG Zhiqiang

doi:10.21656/1000-0887.420277

Volume 43 Issue 9

Sep. 2022

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Article Navigation > Applied Mathematics and Mechanics > 2022 > 43(9): 976-986

PENG Mengyao, GU Shuitao, ZHOU Yangjing, WANG Shimeng, FENG Zhiqiang. Development and Application of Fatigue Life Evaluation Software LtsFatigue Based on LiToSim[J]. Applied Mathematics and Mechanics, 2022, 43(9): 976-986. doi: 10.21656/1000-0887.420277

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Development and Application of Fatigue Life Evaluation Software LtsFatigue Based on LiToSim

doi: 10.21656/1000-0887.420277

1.
School of Civil Engineering, Chongqing University, Chongqing 400040, P.R.China
2.
Chongqing LiToSim Software Co. Ltd. , Chongqing 401121, P.R.China
3.
School of Mechanics and Aerospace Engineering, Southwest Jiaotong University, Chengdu 610031, P.R.China

Received Date: 2021-09-13
Accepted Date: 2022-03-08
Rev Recd Date: 2022-01-18

Available Online: 2022-09-01

Publish Date: 2022-09-30

Abstract

Abstract

For the fatigue problem of structures under random loads, the numerical calculation program for structural fatigue analysis was embedded into the self-developed LiToSim platform. Based on the LiToSim platform, fatigue software LtsFatigue was developed, and the structure fatigue life was calculated by means of the time domain fatigue algorithm, where the stress time history was processed and calculated with the rainflow counting method. The frequency domain fatigue algorithm was introduced to estimate the fatigue life based on the stress response power spectrum and the distribution of stress cycles. The comparison through the gear example with the commercial software verifies the calculation accuracy of the time domain and frequency domain methods of the LtsFatigue customized fatigue software. The frequency domain algorithm has greatly improved computational efficiency, and highlights the advantages of the LtsFatigue software. The development of the LtsFatigue customized software based on the LiToSim platform has significant application value for fatigue simulations of large complex structures.
- LtsFatigue software,
- LiToSim platform,
- structural fatigue,
- random load

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References(28)

References

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