G-space theory and weakened-weak form for micropolar media: Application to smoothed point interpolation methods

被引:11
|
作者
Gori, Lapo [1 ]
Penna, Samuel Silva [1 ]
Da Silva Pitangueira, Roque Luiz [1 ]
机构
[1] Fed Univ Minas Gerais UFMG, Engn Sch, Dept Struct Engn, Ave Antonio Carlos 6627, BR-31270901 Belo Horizonte, MG, Brazil
关键词
Micropolar continuum theory; Meshfree methods; Smoothed point interpolation methods (S-PIMs); Strain smoothing; Weakened-weak form; FINITE-ELEMENT-METHOD; CONFORMING NODAL INTEGRATION; METHOD LC-PIM; MATERIAL INSTABILITIES; UNIFIED FORMULATION; W-2; FORM; REGULARIZATION; ELASTICITY; LOCALIZATION; SIMULATIONS;
D O I
10.1016/j.enganabound.2019.01.013
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The concepts of G-space and weakened-weak form already available for the classic continuum model are extended to the case of the micropolar theory, in order to allow the use of smoothed point interpolation methods for the analysis of micropolar media. A new G-space, defined as a cartesian product of standard G-spaces, is introduced in order to represent both the displacement and the microrotation fields of a micropolar medium. Based on this G-space, a micropolar weakened-weak form is formulated, and the existence and uniqueness of its solution are proven.
引用
收藏
页码:318 / 329
页数:12
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