A general formulation for strength prediction of advanced ceramics by ball-on-three-balls (B3B)-test with different multiaxial failure criteria

2012 ◽  
Vol 38 (3) ◽  
pp. 2411-2420 ◽  
Author(s):  
Serkan Nohut
Keyword(s):  
Failure Criteria ◽  
Strength Prediction ◽  
Advanced Ceramics

scholarly journals Peridynamic Open-Hole Tensile Strength Prediction of Fiber-Reinforced Composite Laminate Using Energy-Based Failure Criteria

2019 ◽  
Vol 2019 ◽  
pp. 1-14
Author(s):  
Xiao-Wei Jiang ◽  
Hai Wang ◽  
Shijun Guo
Keyword(s):  
Composite Laminate ◽  
Failure Criteria ◽  
Composite Fiber ◽  
Composite Model ◽  
Strength Prediction ◽  
Fiber Reinforced ◽  
Fiber Reinforced Composite ◽  
Reinforced Composite ◽  
Open Hole ◽  
Laminate Theory

In the present study, peridynamic (PD) open-hole tensile (OHT) strength prediction of fiber-reinforced composite laminate using energy-based failure criteria is conducted. Spherical-horizon peridynamic laminate theory (PDLT) model is used. Energy-based failure criteria are introduced into the model. Delamination fracture modes can be distinguished in the present energy-based failure criteria. Three OHT testing results of fiber-reinforced composite laminate are chosen from literatures and used as benchmarks to validate the present PD composite model with energy-based failure criteria. It is shown that the PD predicted OHT strength fits the experimental results quite well. From the predicted displacement field, the fracture surface can be clearly detected. Typical damage modes of composite, fiber breakage, matrix crack, and delamination, are also illustrated in detail for each specimen. Numerical results in the present study validate the accuracy and reliability of the present PD composite model with energy-based failure criteria.

Progressive damage simulation of open-hole composite laminates under compression based on different failure criteria

2016 ◽  
Vol 51 (9) ◽  
pp. 1239-1251 ◽  
Author(s):  
Song Zhou ◽  
Yi Sun ◽  
Boyang Chen ◽  
Tong-Earn Tay
Keyword(s):  
Composite Structures ◽  
Damage Mechanics ◽  
Failure Modes ◽  
Failure Criteria ◽  
Strength Prediction ◽  
Progressive Damage ◽  
Cohesive Elements ◽  
Damage Initiation ◽  
Open Hole ◽  
Matrix Damage

The strength prediction of open-hole fibre-reinforced composite laminate under compression is very important in the design of composite structures. The modelling of fibre, matrix damage and delamination plays an important role in the understanding of the damage mechanics of laminate under open-hole compression. In this article, a progressive damage model for open-hole compression that is based on continuum shell elements and cohesive elements is established to model in-plane damage and delamination, respectively. The damage mechanics of sublaminate-scaled laminates with ply sequence [45/0/−45/90]ms and ply-level-scaled laminates with ply sequence [45n/0n/−45n/90n]s are investigated by our proposed model. The Tsai-Wu and Hoffman failure criteria are employed for the determination of matrix damage initiation. Compared with the experiments, the numerical results using the Tsai-Wu criterion exhibit better accuracy regarding open-hole compression strength prediction and failure modes simulation.

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