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	1. Interaction Function of Coupled Bursting Neurons
	ZHANG Jiadong, SHI Xia
	Mechanics 18 December 2015
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	Abstract:The interaction functions of electrically coupled Hindmarsh-Rose (HR) neurons for different firing patterns are investigated in this paper. By applying the phase reduction technique, the burst phase response curve (BPRC) of the bursting neuron is derived. Then the interaction function of two coupled neurons can be calculated numerically according to the BPRC and the voltage time course of the neuron. Results show that the BPRC is more and more complicated with the increase of the spiking number within a burst, and the curve of the interaction function oscillates more and more frequently with it. However, two certain things are unchanged: $phi=0$, which corresponds to the in-phase synchronization state, is always the stable equilibrium, while the anti-phase synchronization state with $phi=0.5$ is an unstable equilibrium.
	TO cite this article:ZHANG Jiadong, SHI Xia. Interaction Function of Coupled Bursting Neurons[OL].[18 December 2015] http://en.paper.edu.cn/en_releasepaper/content/4672312


	2. Synchronization of a Neuronal Network Consisting of Mixed Bursting Neurons with Hybrid Synapses
	XI Wenqi, SHI Xia
	Mechanics 18 December 2015
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	Abstract:In this paper, burst synchronization of a small-world neuronal network consisting of mixed bursting types of neurons coupled via inhibitory-excitatory chemical synapses is explored. The quantities, the synchronization parameter, is used to characterize the synchronization degree of the neuronal network. Numerical results show that the percentage of the inhibitory synapses in the network is the major factor for we get a similarly bell-shaped dependence of synchronization on it. We also find that not only the value of the coupling strength can promote the synchronization degree, but also the probability of random edges adding to the small-world network can. The ratio of the long bursting neurons has little effect on the burst synchronization of the network.
	TO cite this article:XI Wenqi, SHI Xia. Synchronization of a Neuronal Network Consisting of Mixed Bursting Neurons with Hybrid Synapses[OL].[18 December 2015] http://en.paper.edu.cn/en_releasepaper/content/4672309

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	3. Numerical Simulation of CL-20 Underwater Explosion Performance of Shock Waves and Pulsating Bubble Phenomena
	FENG Song,PENG Jinhua,RAO Guoning
	Mechanics 08 December 2015
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	Abstract:This paper describes numerical methodology to model and investigates the shock waves and bubble dynamics produced by an underwater explosion when it happens in limited waters. The nonlinear dynamics results were calculated by ANSYS-AUTODYN explicit software. CL-20 was studied as basic research object in underwater test. The results calculated by empirical formula and AUTODYN was compared in order to corroborate the accuracy of numerical results. It was shown that pressure and impulse histories for simulation are in good correspondence with the data calculated by empirical formula, which confirms that the method of numerical simulation is reliable.
	TO cite this article:FENG Song,PENG Jinhua,RAO Guoning. Numerical Simulation of CL-20 Underwater Explosion Performance of Shock Waves and Pulsating Bubble Phenomena[OL].[ 8 December 2015] http://en.paper.edu.cn/en_releasepaper/content/4667297


	4. Surface Morphology of an Elastic Solid Induced by van der Waals Force from a Rigid Particle
	HE Linghui
	Mechanics 07 December 2015
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	Abstract:Molecular interaction between a rigid spherical particle and a semi-infinite incompressible elastic substrate is studied by invoking the Lennard-Jones potential. It is inferred that the particle exerts a distributed normal force to the substrate surface. Then the surface deformation of the substrate is obtained analytically by using the Green function technique. The effects of particle size and position on the surface morphology of the deformed substrate are discussed, and the results may be helpful to the understanding of some phenomena such as particle adsorption on elastic surfaces as well as tip-surface interaction in atomic force microscope measurements.
	TO cite this article:HE Linghui. Surface Morphology of an Elastic Solid Induced by van der Waals Force from a Rigid Particle[OL].[ 7 December 2015] http://en.paper.edu.cn/en_releasepaper/content/4666764


	5. Interface elastic field of multilayer thin foils induced by dislocation loops
	Xia Re,Wu Wenwang
	Mechanics 07 December 2015
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	Abstract:A semi-analytical solution based on discrete Fast Fourier Transformation (FFT) is developed for analyzing the interface traction stress (ITS) of approaching dislocation loops within perfect bonding multi-layers. Interface elastic fields of perfect bonding multilayers are influenced by the elastic modulus mismatch and crystallographic misorientation, and then the case of perfect bonding two-layer system is elaborated in details.
	TO cite this article:Xia Re,Wu Wenwang. Interface elastic field of multilayer thin foils induced by dislocation loops[OL].[ 7 December 2015] http://en.paper.edu.cn/en_releasepaper/content/4667332


	6. Gradient Piezoelectric Beam with Flexoelectric and Surface Effects
	YUE Yanmei,XU Kaiyu
	Mechanics 05 December 2015
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	Abstract:In this paper, a piezoelectric beam model with flexoelectricity and surface effects is proposed. An energy variational principle is postulated to develop the governing equations and boundary conditions. Moreover, the strain gradient coefficient and flexoelectric paprameter are introduced to account for higher order coupling effects of underlying microstructure. Then the bending problem of a cantilever beam is solved to illustrate the theory. It is found that the deflection of the cantilever may depend strongly on the so-introduced gradient-related effects and surface properties. Flexoelectricity can soften the beam stiffness, while strain gradient may enhance the beam striness. And also, the electric field distributions obtained by the models with and without the coupling of strian gradient have a great difference.
	TO cite this article:YUE Yanmei,XU Kaiyu. Gradient Piezoelectric Beam with Flexoelectric and Surface Effects[OL].[ 5 December 2015] http://en.paper.edu.cn/en_releasepaper/content/4666619


	7. Nucleation of detachment from the edge of an adhered thin elastic film
	HE Linghui
	Mechanics 28 November 2015
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	Abstract:Detachment of a thin elastic film adhered onto a rigid substrate via van der Waals force is studied in the two-dimensional setting. The film is assumed semi-infite ling and undergoes a peeling force transverse to its edge. By using the modified iteration method, the critical peeling force which gives rise to detachment nucleation from the edge of the film is derived in an analytical form.
	TO cite this article:HE Linghui. Nucleation of detachment from the edge of an adhered thin elastic film[OL].[28 November 2015] http://en.paper.edu.cn/en_releasepaper/content/4666707


	8. Effects of stitches on the mechanical response of stitched composite single-lap joints
	WANG Zhiyong
	Mechanics 27 November 2015
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	Abstract:The functions of stitch thread in stitched composite single-lap joints are investigated by experimental measurement and finite element (FE) simulation. Through microscopic observations, it is found that stitches severely destroyed the microstructures of laminated composites, which should have impact on the mechanical behaviors of the composite around the stitches. Digital image correlation (DIC) technique is used to measure the strain fields near the stitches when the specimens are under tensile loading. The experimental results reveal the degeneration of the mechanical properties of the composite near the stitch threads. In FE analysis, the virtual crack closure technique (VCCT) is used to analyze the effect of the stitches on the strain energy release rate (SERR) for a delamination progressing along the interface between the adherends. The FE results indicate that stitches can effectively restrain the extension of the delamination between the two adherends.
	TO cite this article:WANG Zhiyong. Effects of stitches on the mechanical response of stitched composite single-lap joints[OL].[27 November 2015] http://en.paper.edu.cn/en_releasepaper/content/4666158


	9. Magnetoelectric effect and frequency multiplying behavior of layered composites in large ac magnetic fields
	Longfei Niu,Hong Yao,Yang Shi,Yuanwen Gao
	Mechanics 20 November 2015
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	Abstract:ME frequency multiplying behavior has wide applications in frequency multipliers, which can tune to a harmonic of the input frequency. It is necessary not only to widen frequency range of applications, but also to achieve more harmonics of output signals. We report a new way for adjusting the output signals frequencies by altering the applied dc magnetic fields and structures under a large ac magnetic field (100Oe). Without the dc magnetic field, some comparisons were made to study the differences of ME frequency multiplying behaviors among the different samples and as a result basic frequencies of output signals can be adjusted by changing the structures. Then, a dc magnetic field is applied to obtain more basic frequencies and distortions of output signals. At the same time, the dependences of ME effect on ac and dc magnetic fields are investigated, respectively. Our results show that structures have a significant influence on ME frequency multiplying behaviors: bilayers present more basic frequency than trilayer. Meanwhile, when a dc magnetic field was applied, odd harmonics generate and the numbers of basic frequencies increase. As the dc magnetic field continue to increase, ME frequency multiplying behaviors disappear gradually. For different samples, ME effects show different variations with the applied magnetic fields.
	TO cite this article:Longfei Niu,Hong Yao,Yang Shi, et al. Magnetoelectric effect and frequency multiplying behavior of layered composites in large ac magnetic fields[OL].[20 November 2015] http://en.paper.edu.cn/en_releasepaper/content/4662851


	10. Frequency and damping trimming of a microresonator via delayed feedback signals
	HAN Jianxin,ZHANG Qichang,WANG Wei
	Mechanics 28 October 2015
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	Abstract:A study on an electrically actuated microresonator is carried out to investigate its dynamic characteristic with delayed displacement and velocity feedback signals. The amplitude of AC voltage is relatively smaller than that of DC voltage in real cases, which yields a small amplitude vibration around its equilibrium position. For delayed stability purpose, delay-independent region based on the linearized equation is analytically derived and then numerically verified. Then, the method of multiple scales is used to determine the frequency response equation under primary resonance of the system. Explicit expressions of the effective natural angular frequency and damping ratio are deduced, respectively. Results show that these two types of delayed feedback signals can induce frequency and damping trimming of the system. An ideal situation, when one type of signal can only tune one vibration property, is discussed in detail. Four cases of delay conditions are defined to decouple the two trimming phenomena. Finally, both the perturbation solution and numerical results are used to verify the correctness of our analysis.
	TO cite this article:HAN Jianxin,ZHANG Qichang,WANG Wei. Frequency and damping trimming of a microresonator via delayed feedback signals[OL].[28 October 2015] http://en.paper.edu.cn/en_releasepaper/content/4659192

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