Application of continuum damage mechanics model for composites in progressive failure prediction of bolted joints

HE Boling; GE Dongyun

doi:10.13801/j.cnki.fhclxb.20191030.004

Volume 37 Issue 8

Aug. 2020

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HE Boling, GE Dongyun. Application of continuum damage mechanics model for composites in progressive failure prediction of bolted joints[J]. Acta Materiae Compositae Sinica, 2020, 37(8): 2065-2075. doi: 10.13801/j.cnki.fhclxb.20191030.004

Citation:

HE Boling, GE Dongyun. Application of continuum damage mechanics model for composites in progressive failure prediction of bolted joints[J]. Acta Materiae Compositae Sinica, 2020, 37(8): 2065-2075. doi: 10.13801/j.cnki.fhclxb.20191030.004

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Application of continuum damage mechanics model for composites in progressive failure prediction of bolted joints

doi: 10.13801/j.cnki.fhclxb.20191030.004

HE Boling^{1, 2
,},
GE Dongyun^{3
,
,}

1.
School of Mechanical and Transportation Engineering, Guangxi University of Science and Technology, Liuzhou 545006, China
2.
State Key Laboratory for Strength and Vibration of Mechanical Structures, Xi’an Jiaotong University, Xi’an 710049, China
3.
School of Aerospace Engineering, Tsinghua University, Beijing 100084, China

Received Date: 2019-09-05
Accepted Date: 2019-10-24

Available Online: 2019-10-31

Publish Date: 2020-08-15

Abstract

Abstract

A continuum damage mechanics model for composites, considering the intralaminar (fibre and matrix failure) and interlaminar failure, was proposed to predict the progressive damage behavior of bolted joints. Based on Tsai-Wu strength criterion, a new failure-judgement formula was developed to distinguish the intralaminar and interlaminar failure. An exponent material degradation model was introduced to simulate the damage evolution of the composite. A continuum damage mechanics model was established to analyze the effect of 0° ply ratio and bolt diameter on the bearing characteristic of the composite bolted joints. The predicted results exhibit good agreement with the experimental results. These results show that high 0° ply ratio induces the shear-out failure of the composite bolted joints, decreasing the structural bearing capability. Increasing the bolt diameter can restrain the damage of the composite laminate and improve the bearing strength of the composite bolted joints.
- composite,
- bolted joint,
- continuum damage mechanics model,
- progressive damage,
- strength criterion
Long Abstrsct
Innovation Points

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References(27)

References

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