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    Large Deformation and Strain Gradient Fracture Analysis of Double Cantilever Beams with Piezoelectric Effect

    Source: Journal of Engineering Mechanics:;2018:;Volume ( 144 ):;issue: 008
    Author:
    Joseph R. P.;Wang B. L.;Samali B.
    DOI: 10.1061/(ASCE)EM.1943-7889.0001497
    Publisher: American Society of Civil Engineers
    Abstract: This paper examines the size-dependent fracture of a piezoelectric double cantilever beam (DCB) specimen based on large deformation–strain gradient theory. The governing equations with relevant boundary conditions for a piezoelectric cantilever beam with simultaneous consideration of surface piezoelectricity, surface elasticity, surface residual stress, and large deformation are obtained and solved numerically. These results are further utilized to investigate the fracture behavior of a DCB. Results show that the strain gradient effect is more pronounced when the beam height is less than the material length scale parameter. The strain gradient model anticipates significant stiffening behavior at micro/nanoscales. The effect of the surface residual stress is more substantial than that of surface elasticity and surface piezoelectricity. The study further established that the strain energy release rate of the short-circuit boundary condition is larger than that of open-circuit boundary condition. Using strain gradient model, the effect of the uncracked part of DCB is more noticeable on a smaller scale and should not be ignored even for slender beams.
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      Large Deformation and Strain Gradient Fracture Analysis of Double Cantilever Beams with Piezoelectric Effect

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4248791
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    contributor authorJoseph R. P.;Wang B. L.;Samali B.
    date accessioned2019-02-26T07:41:57Z
    date available2019-02-26T07:41:57Z
    date issued2018
    identifier other%28ASCE%29EM.1943-7889.0001497.pdf
    identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4248791
    description abstractThis paper examines the size-dependent fracture of a piezoelectric double cantilever beam (DCB) specimen based on large deformation–strain gradient theory. The governing equations with relevant boundary conditions for a piezoelectric cantilever beam with simultaneous consideration of surface piezoelectricity, surface elasticity, surface residual stress, and large deformation are obtained and solved numerically. These results are further utilized to investigate the fracture behavior of a DCB. Results show that the strain gradient effect is more pronounced when the beam height is less than the material length scale parameter. The strain gradient model anticipates significant stiffening behavior at micro/nanoscales. The effect of the surface residual stress is more substantial than that of surface elasticity and surface piezoelectricity. The study further established that the strain energy release rate of the short-circuit boundary condition is larger than that of open-circuit boundary condition. Using strain gradient model, the effect of the uncracked part of DCB is more noticeable on a smaller scale and should not be ignored even for slender beams.
    publisherAmerican Society of Civil Engineers
    titleLarge Deformation and Strain Gradient Fracture Analysis of Double Cantilever Beams with Piezoelectric Effect
    typeJournal Paper
    journal volume144
    journal issue8
    journal titleJournal of Engineering Mechanics
    identifier doi10.1061/(ASCE)EM.1943-7889.0001497
    page4018071
    treeJournal of Engineering Mechanics:;2018:;Volume ( 144 ):;issue: 008
    contenttypeFulltext
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