Nonlinear homogenization method for practical applications

K. Terada, N. Kikuchi

研究成果: Conference article査読

122 被引用数 (Scopus)

抄録

The homogenization method applied to nonlinear problems is discussed from practical point view. The conventional procedure of the asymptotic homogenization method for linear elasticity problems is directly extended to nonlinear problems by using rate formulation of the updated Lagrangian scheme. Analysis is made for a composite material whose constituents reveal elastoplasticity character as well as finite deformation in which a local periodicity can be assumed. The updating scheme also enables us to utilize the microscopic stress field, which is obtained in a localization process, to judge, for example, plastic failure. Several computational features in the incremental solution method are investigated to examine the feasibility of the nonlinear homogenization method in practical applications. Numerical examples verify the formulation and provide some insight into practical applications. Some brief remarks are made on large deformation of a periodic unit cell and on computing costs in global-local simultaneous computations. The expensive cost in the computation requires us to propose a new approach to large scale problems. Here the nonlinear homogenization solutions are used as experimental data and construct the macroscopic constitutive relations.

本文言語English
ページ(範囲)1-16
ページ数16
ジャーナルAmerican Society of Mechanical Engineers, Applied Mechanics Division, AMD
212
出版ステータスPublished - 1995 12月 1
外部発表はい
イベントProceedings of the 1995 ASME International Mechanical Engineering Congress and Exposition - San Francisco, CA, USA
継続期間: 1995 11月 121995 11月 17

ASJC Scopus subject areas

  • 機械工学

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