Effects of Laminate Misalignment on Thermoelastoviscoplastic Properties of Ultrafine Plate-Fin Structures

Yuki Yamanaka; Tetsuya Matsuda

doi:10.4028/www.scientific.net/KEM.626.301

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HomeKey Engineering MaterialsKey Engineering Materials Vol. 626Effects of Laminate Misalignment on...

Effects of Laminate Misalignment on Thermoelastoviscoplastic Properties of Ultrafine Plate-Fin Structures

Abstract:

Effects of laminate misalignment on the thermoelastoviscoplastic properties of ultrafine plate-fin structures are investigated using a homogenization theory for thermoelastoviscoplasticity. For this, a homogenization theory for time-dependent materials is combined with a homogenization theory for thermoelasticity. Moreover, the substructure method is introduced into the theory to deal with the random laminate misalignment in ultrafine plate-fin structures. The present method is then applied to the analysis of thermoelastoviscoplastic behavior of ultrafine plate-fin structures made of a Ni-based alloy subjected to a macroscopic temperature increment from 20 to 200. The number of fin layers in a unit cell is five kinds, i.e. N = 10, 20, 30, 40 and 50, for each of which, twenty patterns of random laminate misalignment are considered. In addition, five cases of periodic laminate misalignment are also considered for comparison. The results reveal the effects of the laminate misalignment on the macroscopic and microscopic thermoelastoviscoplastic properties of ultrafine plate-fin structures.

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Periodical:

Key Engineering Materials (Volume 626)

Pages:

301-306

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.626.301

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Online since:

August 2014

Authors:

Yuki Yamanaka, Tetsuya Matsuda*

Keywords:

Homogenization, Laminate Misalignment, Plate-Fin Structure, Randomness, Thermal Stress, Thermoelastoviscoplasticity

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