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The Maximum Stress Failure Criterion and the Maximum Strain Failure Criterion: Their Unification and Rationalization (2020)
Journal Article
Li, S. (2020). The Maximum Stress Failure Criterion and the Maximum Strain Failure Criterion: Their Unification and Rationalization. Journal of Composites Science, 4(4), Article 157. https://doi.org/10.3390/jcs4040157

The maximum strain failure criterion is unified with the maximum stress failure criterion, after exploring the implications of two considerations responsible for this: (1) the failure strains for the direct strain components employed in the maximum s... Read More about The Maximum Stress Failure Criterion and the Maximum Strain Failure Criterion: Their Unification and Rationalization.

A reflection on the Mohr failure criterion (2020)
Journal Article
Li, S. (2020). A reflection on the Mohr failure criterion. Mechanics of Materials, 148, Article 103442. https://doi.org/10.1016/j.mechmat.2020.103442

The Mohr failure criterion has been reexamined and represented in a rational manner in the context of brittle materials. The generic assumptions and their logical inferences have been elaborated, as well as the basic assumption of the isotropy of the... Read More about A reflection on the Mohr failure criterion.

Unification and parameterisation of 2D and 3D weaves and the formulation of a unit cell for composites made of such preforms (2020)
Journal Article
Xu, M., Sitnikova, E., & Li, S. (2020). Unification and parameterisation of 2D and 3D weaves and the formulation of a unit cell for composites made of such preforms. Composites Part A: Applied Science and Manufacturing, 133, Article 105868. https://doi.org/10.1016/j.compositesa.2020.105868

In this paper, the method to unify the definition of woven architectures in textile composites over a wide range of variations has been established. This was achieved via parametrisation of the weaves, which was conducted employing a limited set of c... Read More about Unification and parameterisation of 2D and 3D weaves and the formulation of a unit cell for composites made of such preforms.

Closed-Form Solution for Secondary Perturbation Displacement in Finite-Element-Implemented Koiter’s Theory (2020)
Journal Article
Yan, J., & Li, S. (2020). Closed-Form Solution for Secondary Perturbation Displacement in Finite-Element-Implemented Koiter’s Theory. AIAA Journal, 58(4), 1-12. https://doi.org/10.2514/1.j058941

The finite-element-implemented Koiter’s initial postbuckling analysis has not managed to convince commercial finite element code developers to incorporate it into their codes to benefit structural designers and analysts. Three key obstacles have been... Read More about Closed-Form Solution for Secondary Perturbation Displacement in Finite-Element-Implemented Koiter’s Theory.

On the Representativeness of the Cohesive Zone Model in the Simulation of the Delamination Problem (2019)
Journal Article
Sitnikova, E., Li, D., Wei, J., Yi, X., & Li, S. (2019). On the Representativeness of the Cohesive Zone Model in the Simulation of the Delamination Problem. Journal of Composites Science, 3(1), Article 22. https://doi.org/10.3390/jcs3010022

With the development of finite element (FE) codes, numerical modelling of delamination is often considered to be somewhat commonplace in modern engineering. However, the readily available modelling techniques often undermine the truthful understandin... Read More about On the Representativeness of the Cohesive Zone Model in the Simulation of the Delamination Problem.

Computational mechanical characterization of geometrically transformed Schwarz P lattice tissue scaffolds fabricated via two photon polymerization (2PP) (2018)
Journal Article
Zabidi, A. Z., Li, S., Felfel, R. M., Thomas, K. G., Grant, D. M., Mcnally, D., & Scotchford, C. (2019). Computational mechanical characterization of geometrically transformed Schwarz P lattice tissue scaffolds fabricated via two photon polymerization (2PP). Additive Manufacturing, 25, 399-411. https://doi.org/10.1016/j.addma.2018.11.021

Schwarz P unit cell-based tissue scaffolds comprised of poly(D,L-lactide-co-caprolactone)(PLCL) fabricated via the additive manufacturing technique, two-photon polymerisation (2PP) were found to undergo geometrical transformations from the original i... Read More about Computational mechanical characterization of geometrically transformed Schwarz P lattice tissue scaffolds fabricated via two photon polymerization (2PP).

Damage related material constants in continuum damage mechanics for unidirectional composites with matrix cracks (2018)
Journal Article
Li, S., Wang, M., Jeanmeure, L., Sitnikova, E., Yu, F., Pan, Q., …Talreja, R. (2019). Damage related material constants in continuum damage mechanics for unidirectional composites with matrix cracks. International Journal of Damage Mechanics, 28(5), 690-707. https://doi.org/10.1177/1056789518783239

Application of a continuum damage mechanics formulation rests on the ease with which the material constants involved in the formulation can be determined. For an initially linear elastic material, the changes in elastic constants induced by damage de... Read More about Damage related material constants in continuum damage mechanics for unidirectional composites with matrix cracks.

The unit cell method in predictions of thermal expansion properties of textile reinforced composites (2018)
Journal Article
Gou, J.-J., Gong, C.-L., Gu, L.-X., Li, S., & Tao, W.-Q. (2018). The unit cell method in predictions of thermal expansion properties of textile reinforced composites. Composite Structures, 195, 99-117. https://doi.org/10.1016/j.compstruct.2018.04.045

Thermal expansion properties of textile reinforced composites with certain structure symmetries can be efficiently calculated by a size-limited unit cell. In this paper, a general approach is developed for the establishment of such a unit cell model.... Read More about The unit cell method in predictions of thermal expansion properties of textile reinforced composites.

A critical review on the rationality of popular failure criteria for composites (2018)
Journal Article
Li, S., & Sitnikova, E. (2018). A critical review on the rationality of popular failure criteria for composites. https://doi.org/10.1016/j.coco.2018.02.002

Popular failure criteria for fibre reinforced composites are subjected to critical scrutiny on their rationality. The rationality of a theory is about the mathematical and physical logic underlying the theory, rather than the closeness of their resul... Read More about A critical review on the rationality of popular failure criteria for composites.

An excursion into representative volume elements and unit cells (2017)
Book Chapter
Li, S., & Sitnikova, E. (2017). An excursion into representative volume elements and unit cells. In P. W. Beaumont, & C. H. Zweben (Eds.), Comprehensive Composite Materials II, Volume 1, Reinforcements and General Theories of Composites (451-489). Amsterdam: Elsevier. https://doi.org/10.1016/B978-0-12-803581-8.10352-2

The objective of this chapter is to provide a comprehensive and systematic account on the subject of representative volume elements (RVEs) and unit cells (UCs). To construct an RVE or UC, intuition has been often perceived sufficient to facilitate th... Read More about An excursion into representative volume elements and unit cells.

The Tsai-Wu failure criterion rationalised in the context of UD composites (2017)
Journal Article
Li, S., Sitnikova, E., Liang, Y., & Kaddour, A. S. (2017). The Tsai-Wu failure criterion rationalised in the context of UD composites. Composites Part A: Applied Science and Manufacturing, 102, 207-217. https://doi.org/10.1016/j.compositesa.2017.08.007

© 2017 The Authors This paper is to rationalise the empirical aspect of the Tsai-Wu failure criterion in the context of UD composites associated with the determination of the interactive strength property F12 based on the analytic geometry. It reveal... Read More about The Tsai-Wu failure criterion rationalised in the context of UD composites.

Subtle features of delamination in cross-ply laminates due to low speed impact (2017)
Journal Article
Sitnikova, E., Li, S., Li, D., & Yi, X. (2017). Subtle features of delamination in cross-ply laminates due to low speed impact. Composites Science and Technology, 149, 149-158. https://doi.org/10.1016/j.compscitech.2017.06.021

In cross-ply laminates, the shape of delamination areas, which form due to low velocity impact, have two subtle features, which have been observed consistently in numerous experiments. Those are the pointed delamination tips and the intact zone betwe... Read More about Subtle features of delamination in cross-ply laminates due to low speed impact.

On understanding the applicability of Mohr-Coulomb failure hypothesis for composite materials using UnitCells© (2016)
Presentation / Conference Contribution
Balasubramani, N. K., Sitnikova, E., & Li, S. (2016). On understanding the applicability of Mohr-Coulomb failure hypothesis for composite materials using UnitCells©.

The applicability of Mohr-Coulomb (M-C) failure hypothesis for anisotropic composite materials is re-examined in this paper. Mohr-Coulomb failure theory has been widely referred to in the literature to study the failure of unidirectional (UD) fibre r... Read More about On understanding the applicability of Mohr-Coulomb failure hypothesis for composite materials using UnitCells©.

Finite element analysis (FEA) modelling of fiber-reinforced polymer (FRP) repair in offshore risers (2015)
Book Chapter
Johnson, M., Chan, P., Tshai, K., & Li, S. (2015). Finite element analysis (FEA) modelling of fiber-reinforced polymer (FRP) repair in offshore risers. Rehabilitation of pipelines using fibre reinforced polymer (FRP) composites (177-210). Woodhead Publishing. https://doi.org/10.1016/B978-0-85709-684-5.00009-6

The use of relatively inexpensive, high strength to weight ratio fiber reinforced polymer composite (FRPC) as a load bearing pipe repair sleeve is an emerging technology that is becoming common for offshore applications. This chapter will first outli... Read More about Finite element analysis (FEA) modelling of fiber-reinforced polymer (FRP) repair in offshore risers.

Reflection on 'finite rotation problem' in plate and shell theories and in finite element formulation - Back to basics (2014)
Journal Article

This paper results from a reflection on the problem of finite rotations in plates and shells and its presentation in finite element formulation, a well-attended subject with a wide diversity of treatments, often extremely complicated. For instance, t... Read More about Reflection on 'finite rotation problem' in plate and shell theories and in finite element formulation - Back to basics.

Burst strength of carbon fibre reinforced HDPE strip pipeline repair system: a numerical and experimental approach (2014)
Journal Article

Oil and gas pipelines are susceptible to various forms of damage where repair mechanisms have since been developed for rehabilitation. Once installed, structural health monitoring often incurs excessive costs and defects rectification of the repaired... Read More about Burst strength of carbon fibre reinforced HDPE strip pipeline repair system: a numerical and experimental approach.