Abstract
Cement-based piezoelectric composite, has been widely used as a kind of smart material in structural health monitoring and active vibration control. However, transient dynamic loads such as impact loads may cause serious damage to the composite. Considering the electrode layer effect, this paper aimed to investigate the theoretical response of a 2-2 cement-based piezoelectric composite sensor subjected to an impact load. The vibration behaviors are analyzed by using the mode summation method and the virtual work principle. To simulate the impact load, transient haversine wave loads are assumed in the numerical simulation. Close agreements between theoretical and numerical solutions are found for peak transient haversine wave loads larger than 500 kPa, therefore proving the validity of the theory. Moreover, the influence of the electrode material and geometrical parameters on the dynamic characteristics of this sensor are considered. The present work should be beneficial to the design of this kind of sensor by taking into account the electrode layer effect.
Highlights
With the advances in smart or intelligent structure technology, piezoelectric composites are widely used in structural health monitoring [1,2,3]
We aim to provide a mathematical model to describe the impact mechanical using the mode summation method and the principle of virtual work
The 2-2 cement-based piezoelectric sensor consists of a piezoelectric layer P#3, elastic electrode layers E#2, E#4 and cement layers C#1, C#5, which are arranged in an alternating manner as layers E#2, E#4 and cement layers C#1, C#5, which are arranged in an alternating manner as shown shown ininFigure
Summary
With the advances in smart or intelligent structure technology, piezoelectric composites are widely used in structural health monitoring [1,2,3]. Zhang et al.response studied theofdynamic graded piezoelectric material strip withsubjected a vertical crack under the action of normal impacts properties of piezoelectric structures to simpact load and gave theoretical solutions of the [20,21]. Yin et al.transient presented dynamic a mixed loads, In manymechanical engineering piezoelectric composite may experience finite element formulation for modelling the behavior of a piezoelectric composite and analyzed which could induce certain hidden damages (matrix cracking, fiber breakage, etc.). It isthetherefore response of distributed sensors made of PVDF film when the composite was subjected to low velocity important to understand the dynamic behaviors of cement-based piezoelectric sensors. It can be seen that the proposed model would provide guidance for sensor structure design, material selection and impact load design in simulations and experiments
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