Jing Sun

Guangzhou University · Department of Civil Engineering

Fibre metal laminates (FMLs) are increasingly employed in various industries for their exceptional mechanical properties. Quasi-static tensile and flexural properties, fatigue performance and impact resistance of FMLs have been extensively investigated in the past. However, research on the intermediate strain rate range is still limited. This paper...

In this paper, high-velocity impact resistance of lightweight laminates with multi-layers of carbon-fibre/epoxy laminates sandwiched by two titanium alloy skins and aluminium alloy skins was extensively investigated by experiments with a total of 48 impact tests conducted. The ballistic limit of the titanium-based carbon-fibre/epoxy laminate was es...

Coarse aggregate composes the highest volume in concrete and affects the fresh and hardened performance significantly. To analyze the distribution status of coarse aggregate in cementitious system, the specific surface area (SSA) stays one of the essential parameters but relatively complicated to be determined by traditional ways. Due to the easy a...

Analytical elastic–plastic analysis is presented to investigate the in-plane deformation of the reentrant honeycomb structures subjected to tension or compression. An analytical elastic–plastic deformation analysis is carried out and the nonlinear stress–strain relation of honeycombs is presented, reflecting the dependence of equivalent stress, equ...

Titanium-based carbon-fibre/epoxy laminates (TI-CF FMLs) are a type of fibre metal laminates (FMLs) formed by stacking thin layers of titanium alloy and carbon-fibre/epoxy laminates to combine the advantages of both constituent materials. Applications in various advanced fields, like aerospace, automotive, infrastructure and marine engineering indu...

This study presents a generic model for constructing shear-wave velocity (VS) profiles for various conditions that can be used for modeling the upper-crustal modification effects in ground motion simulations for seismic hazard analysis. The piecewise P-wave velocity (VP) profiling model is adopted in the first place, and the VS profile model is obt...

An analytical model is developed to investigate the in-plane mechanical properties of a thin-walled honeycomb structure. Nonlinear constitutive relations of honeycombs are presented based on in-plane large deformation analysis of a beam; elastic and plastic behaviors are both considered. These relations reflect the dependence of the equivalent stre...

In-plane free vibration of functionally graded graphene platelets reinforced nanocomposites (FG-GPLRCs) circular arches is investigated by using the two-dimensional theory of elasticity. The graphene platelets (GPLs) are dispersed along the thickness direction non-uniformly, and the material properties of the nanocomposites are evaluated by the mod...

The tensile properties of the lightweight titanium-based carbon-fibre/epoxy laminates (TI-CF FMLs) were investigated under quasi-static loading. A comprehensive experimental study was conducted for eleven different types of the TI-CF FMLs (considering various metal sheet thicknesses, metal volume fractions and fibre orientations) as well as their a...

The Hunt and Crossley model has been demonstrated to give accurate predictions of contact force generated by the impact of a solid object. The simulated contact force values have been demonstrated to match closely with experimental results as reported in the literature. However, derivation of the expression for finding the value of the damping coef...

Spring-connected lumped mass models are well-known tools for simulating the impact actions including forces generated at the point of contact which are responsible for localized damage to the target. However, the stiffness properties of the impactor would need to be known in order that such contact forces can be simulated with good accuracies. For...

Impact by hailstones can cause severe and widespread damage to roofs and many other exposed installations. This research aims at developing a model with which the value of the peak contact force generated by impact of a hailstone can be predicted with good confidence. A custom designed and built experimental setup involving the use of a gas gun for...

Certain types of damage generated by the impact of a solid object are correlated with the amount of force that is localized around the area of contact between the impactor and the surface of the target. The stiffer the impactor, the higher the contact force when the amount of impulse delivered by the impact is held constant. Thus, realistic simulat...

Expressions for determining the value of the impact force as reported in the literature and incorporated into code provisions are essentially quasi-static forces for emulating deflection. Quasi-static forces are not to be confused with contact force which is generated in the vicinity of the point of contact between the impactor and target, and cont...

Codified provisions for estimating impact actions in contemporary codes of practices are convenient to apply but lack generality given that parameters associated with the inertia resistance of the target have not been incorporated into the provisions. This paper introduces algebraic expressions for estimating the maximum deflection of a structural...

Storm debris including hailstones have been causing very costly damage to both metal and tiled roofs and to rooftops of vehicles in regions of temperate climate. Few guidelines for assessing the vulnerability of existing installations have been developed. Consequently, it is difficult to estimate the risks of damage for a given storm scenario in or...