Libin Zhao
Beihang University
Composite numberUltimate tensile strengthFinite element methodComposite laminatesBolted jointComposite materialBridging (networking)Materials scienceJoint (geology)StiffnessMixed modeMaterial propertiesStrain energy release rateCohesive zone modelStructural engineeringDelaminationFiber pull-outBucklingStress (mechanics)Fracture toughness
69Publications
21H-index
1,157Citations
Publications 69
Newest
#1Libin Zhao (Beihang University)H-Index: 21
#2Ziang Fang (Beihang University)H-Index: 3
Last. Jianyu Zhang (Chongqing University)H-Index: 25
view all 5 authors...
Abstract The bolt holes of multi-bolt composite joints have bearing deformation caused by bolt loads and hole tensile deformation resulted from bypass loads. However, the hole tensile deformation was neglected in the existing stiffness method, because the stiffness formula of laminates without hole was applied for the joined hole laminates, which leads to a relatively rough prediction of the bolt load distribution, especially for the multi-bolt joints with larger numbers of bolts, in which the b...
6 CitationsSource
#1Libin Zhao (Beihang University)H-Index: 21
#2Kangkang Wang (Beihang University)H-Index: 4
Last. Jianyu Zhang (Chongqing University)H-Index: 25
view all 7 authors...
Abstract A post-buckling failure analysis framework was established to accurately and thoroughly capture the post-buckling deformation paths and failure processes as well as bearing capacities of composite stiffened panels under uniaxial compression. In this framework, the progressive damage method to thoroughly track the intra- and inter-laminar damage in laminates, the cohesive zone method to accurately examine the stiffener debonding damage, and the arc-length iteration algorithm to tracking ...
3 CitationsSource
#1Meijuan Shan (Beihang University)H-Index: 8
#2Fengrui Liu (Beihang University)H-Index: 12
Last. Jianyu Zhang (Chongqing University)H-Index: 25
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Abstract A bi-material property method was proposed to describe mechanical properties of the unidirectional composite lamina. It divided the lamina into the fiber layer and the resin layer, which have different material properties and are responsible for the intra-laminar and inter-laminar properties, respectively. Furthermore, a finite element modelling method with the composite lamina simulated by the bi-material property method was presented. Combined with a Hashin-type failure criterion and ...
5 CitationsSource
#1Yu Gong (Chongqing University)H-Index: 12
#2Libin Zhao (Beihang University)H-Index: 21
Last. Ning Hu (Chongqing University)H-Index: 60
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Abstract A previous study indicated that the normalized fracture controlling parameter (strain energy release rate G normalized by fatigue delamination resistance Gcf) in the Paris-type law has advantages of lower exponents and data scatter to evaluate the fatigue delamination growth (FDG) behavior. To accurately determine the critical Gcf, which characterizes the real changing resistance against delamination growth, a novel model is proposed from a viewpoint of energy. This model also allows th...
14 CitationsSource
#1Fengrui Liu (Beihang University)H-Index: 12
#2Lu XuhengH-Index: 2
Last. Ning Hu (Chongqing University)H-Index: 60
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Abstract A test method was presented to measure the bolt load distribution in the progressive damage process of multi-bolt composite joints, which exhibits continuous changes with the damage propagation in composite laminates. Based on the repeated loading-unloading cycles, bolt shear loads of a double-lap, three-bolt joint were tested by alternately using modified instrumented bolt-nut pairs and aircraft-grade fasteners, from which the bolt load redistribution history was achieved. In addition,...
12 CitationsSource
#1Libin Zhao (Beihang University)H-Index: 21
#2Wen Yang (Beihang University)H-Index: 1
Last. Jianyu Zhang (Chongqing University)H-Index: 25
view all 7 authors...
Abstract A progressive damage model (PDM) was proposed to analyse the failure of plain-weave carbon fibre-reinforced silicon carbide (C/SiC) composite joints with C/SiC bolts, which were manufactured by the chemical vapour infiltration (CVI) technique. A bilinear constitutive model was established to describe the pseudo-plasticity of the C/SiC composites. Several failure criteria, including the maximum stress failure criterion, Tsai-Wu failure criterion, and Hashin-type criterion, and several ma...
6 CitationsSource
#1Kangkang Wang (Beihang University)H-Index: 4
#2Libin Zhao (Beihang University)H-Index: 21
Last. Jianyu Zhang (Chongqing University)H-Index: 25
view all 4 authors...
Abstract Low velocity impact (LVI) has always been a potential threaten to composite structures. This out-of-plane dynamic impact load easily leads to a dramatic increase of the strain state in the material transverse plane, which can affect the dynamic stress state and damage evolution of the composite laminate, especially for LVI with a relatively high energy. However, the strain rate effect was always neglected in existing investigations, thus introducing inevitable errors in numerical predic...
19 CitationsSource
#1Libin Zhao (Beihang University)H-Index: 21
#2Yaling Liu (Beihang University)H-Index: 1
Last. Jie ZhaoH-Index: 1
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Abstract For low length-width ratio composite laminates with embedded delamination under compressive loading, different failure modes occur and interact tightly, which catastrophically decrease the load carrying capacity of the laminates. In order to systematically investigate the compressive behaviour of these laminates, a thorough progressive failure model taking into account the interaction among intralaminar failure, interlaminar failure and buckling failure was established. In this model, t...
3 CitationsSource
#1Longwei Zhou (Beihang University)H-Index: 8
#2Libin Zhao (Beihang University)H-Index: 21
Last. Jianyu Zhang (Chongqing University)H-Index: 25
view all 4 authors...
Abstract A micromechanics-based 2D numerical model is proposed to comprehensively trace the longitudinal compressive failure of unidirectional carbon fiber reinforced polymers (UD-CFRP), in which microscopic damage mechanisms (namely the fiber fracture, matrix plastic yield and fiber-matrix interface crack) are considered. With this model, the predicted compressive modulus, strength and failure pattern are in good agreements with the experimental results, which validate the effectiveness of the ...
10 CitationsSource
#1Fengrui Liu (Beihang University)H-Index: 12
#2Meijuan Shan (Beihang University)H-Index: 8
Last. Jianyu Zhang (Chongqing University)H-Index: 25
view all 4 authors...
Abstract This paper presents a stochastic bolt load distribution analysis method of composite single-lap multi-bolt joints by using an improved three-stage spring-based method and Monte Carlo simulation. In the proposed method, the random properties of tightening torque, bolt-hole clearance, lamina properties and geometric parameters were involved. The allowable manufacturing tolerance band of parameters and clearance fit were considered, and a combining distribution function consisting of binom...
12 CitationsSource