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Trends in Nanoscale Mechanics pp 147–166Cite as

On the Role of Plasticity Length Scale Parameters in Multi-Scale Modeling

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Part of the book series: ICASE/LaRC Interdisciplinary Series in Science and Engineering ((ICAS,volume 9))

Abstract

This chapter presents a recent study of the effects of plasticity strain gradient length scale parameters on the plastic deformation of LIGA Ni MEMS structures plated from sulfamate baths. Micro-tensile experiments were explored in current study to evaluate the basic tensile properties for LIGA Ni MEMS structures at micron scale. The composite length scale parameter [1] was obtained from the micro-bend techniques, and the stretch gradient length scale parameter [1–4] was extracted from the nano-indentation experiments. A constitutive expression, which is an extension of the traditional J2 theory, was obtained for the LIGA Ni MEMS structures. This constitutive equation can be used for the further modeling of plasticity of LIGA Ni MEMS structures plated under similar conditions. The implications of plasticity length scale parameters are discussed for multi scale modeling between the micron- and nano-scales.

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Authors and Affiliations

  1. Princeton Materials Institute and Department of Mechanical and Aerospace Engineering, Princeton University, Princeton, New Jersey, USA

    J. Lou, P. Shrotriya, S. Allameh & W. O. Soboyejo

  2. Mechanical Reliability and Modeling Department, Sandia National Laboratories, Albuquerque, New Mexico, USA

    T. Buchheit

Authors
  1. J. Lou
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  2. P. Shrotriya
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  3. S. Allameh
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  4. T. Buchheit
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  5. W. O. Soboyejo
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Editor information

Editors and Affiliations

  1. ICASE Institute, NASA Langley Research Center, Hampton, VA, USA

    Vasyl Michael Harik  & Manuel D. Salas  & 

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© 2003 Kluwer Academic Publishers

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Lou, J., Shrotriya, P., Allameh, S., Buchheit, T., Soboyejo, W.O. (2003). On the Role of Plasticity Length Scale Parameters in Multi-Scale Modeling. In: Harik, V.M., Salas, M.D. (eds) Trends in Nanoscale Mechanics. ICASE/LaRC Interdisciplinary Series in Science and Engineering, vol 9. Springer, Dordrecht. https://doi.org/10.1007/978-94-017-0385-7_6

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  • DOI: https://doi.org/10.1007/978-94-017-0385-7_6

  • Publisher Name: Springer, Dordrecht

  • Print ISBN: 978-90-481-6479-0

  • Online ISBN: 978-94-017-0385-7

  • eBook Packages: Springer Book Archive

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