On the Computational Modeling of Lipid Bilayers Using Thin-Shell Theory

被引:13
|
作者
Sauer, Roger A. [1 ]
机构
[1] Rhein Westfal TH Aachen, Aachen Inst Adv Study Computat Engn Sci AICES, Templergraben 55, D-52056 Aachen, Germany
来源
ROLE OF MECHANICS IN THE STUDY OF LIPID BILAYERS | 2018年 / 577卷
关键词
FINITE-ELEMENT-METHOD; RED-BLOOD-CELL; MEMBRANE CURVATURE; ISOGEOMETRIC ANALYSIS; LIQUID-MEMBRANES; FORMULATION; TENSION; VESICLES; SHAPE; EQUILIBRIUM;
D O I
10.1007/978-3-319-56348-0_5
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
This chapter discusses the computational modeling of lipid bilayers based on the nonlinear theory of thin shells. Several computational challenges are identified and various theoretical and computational ingredients are proposed in order to counter them. In particular, C-1-continuous, NURBS-based, LBB-conforming surface finite element discretizations are discussed. The constitutive behavior of the bilayer is based on in-plane viscosity and (near) area-incompressibility combined with the Helfrich bending model. Various shear stabilization techniques are proposed for quasi-static computations. All ingredients are formulated in the curvilinear coordinate system characterizing general surface parameterizations. The consistent linearization of the formulation is presented, and several numerical examples are shown.
引用
收藏
页码:221 / 286
页数:66
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