A Finite Element Procedure for Analysis of Chemo-Mechanical Coupling Behavior of Hydrogels

• 作者: Qingsheng Yang Wei Wei
• 来源期刊: 工程与科学中的计算机建模(英文)
• 学科: 数学
• 关键词: HYDROGEL Chemo-mechanical coupling Hamilton’s PRINCIPLE Coupled FINITE element method
• 年，卷（期）: 2016,（7）
• 页码范围: 33-58
• 页数: 26页
• 分类号: O17

摘要

Chemo-mechanical coupling behavior of materials is a transformation process between mechanical and chemical energy.In this paper,based on the coupled chemo-mechanical constitutive equations and governing equations during isothermal process,the equivalent integral forms of chemo-mechanical coupling governing equations and corresponding finite element procedure are obtained by using Hamilton’s principle.An isoparametric plane element for chemo-mechanical coupling is associated into ABAQUS finite element package through user element subroutine UEL.The numerical examples exhibit that the ionic concentration variation can cause mechanical deformation and mechanical action can produce redistribution of ionic concentration for hydrogels.It is proved that the present developed chemo-mechanical coupling finite element procedure can be utilized to model the coupling behavior of hydrogels effectively.