Effects of temperature and clearance fit on the load distribution of composite-metal hybrid structures

CAI Qiyang; ZHAO Qi

doi:10.13801/j.cnki.fhclxb.20210301.005

Volume 38 Issue 12

Nov. 2021

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Acta Materiae Compositae Sinica > 2021 > 38(12): 4228-4238. > DOI: 10.13801/j.cnki.fhclxb.20210301.005

CAI Qiyang, ZHAO Qi. Effects of temperature and clearance fit on the load distribution of composite-metal hybrid structures[J]. Acta Materiae Compositae Sinica, 2021, 38(12): 4228-4238. DOI: 10.13801/j.cnki.fhclxb.20210301.005

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Effects of temperature and clearance fit on the load distribution of composite-metal hybrid structures

CAI Qiyang,
ZHAO Qi^,

COMAC Shanghai Aircraft Design and Research Institute, Shanghai 201210, China

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Received Date: December 24, 2020
Accepted Date: February 20, 2021
Available Online: March 01, 2021

Abstract

Abstract

By means of finite element modelling and experiments, the effects of temperature and clearance fit on the connection strength and load distribution of the composite-metal hybrid structure were investigated herein. The finite element models of single-shear joint with two bolts or three bolts were established respectively to study the distribution of bolt load with consideration of contact, metal plasticity and progressive damage of composite. It is shown from the results that the clearance fit has great effects on the distribution of bolt load in the initial stage, but it doesn’t affect the ratio of bolt load and bearing strength in the yield stage. The temperature change would bring additional temperature-load, which has a great impact on the load distribution of the bolts at the end. The superposition of temperature-load and mechanical load would aggravate the unevenness of load distribution for the bolts at the end.
- hybrid structure,
- finite element method,
- environment temperature,
- clearance,
- load distribution

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Effects of temperature and clearance fit on the load distribution of composite-metal hybrid structures