Developing a beam formulation for semi-crystalline two-way shape memory polymers

被引:6
作者
Maleki-Bigdeli, Mohammad-Ali [1 ]
Baniassadi, Majid [1 ]
Wang, Kui [2 ]
Baghani, Mostafa [1 ]
机构
[1] Univ Tehran, Sch Mech Engn, Coll Engn, POB 515-14395, Tehran, Iran
[2] Cent South Univ, Sch Traff & Transportat Engn, Key Lab Traff Safety Track, Minist Educ, Changsha, Peoples R China
关键词
Two-way shape memory polymer; semi-crystalline; beam formulation; numerical implementation; MODEL; POLYURETHANE; THERMOMECHANICS; IMPLEMENTATION; COMPOSITES; NETWORKS; BEHAVIOR;
D O I
10.1177/1045389X20924837
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
In this research, the bending of a two-way shape memory polymer beam is examined implementing a one-dimensional phenomenological macroscopic constitutive model into Euler-Bernoulli and von-Karman beam theories. Since bending loading is a fundamental problem in engineering applications, a combination of bending problem and two-way shape memory effect capable of switching between two temporary shapes can be used in different applications, for example, thermally activated sensors and actuators. Shape memory polymers as a branch of soft materials can undergo large deformation. Hence, Euler-Bernoulli beam theory does not apply to the bending of a shape memory polymer beam where moderate rotations may occur. To overcome this limitation, von-Karman beam theory accounting for the mid-plane stretching as well as moderate rotations can be employed. To investigate the difference between the two beam theories, the deflection and rotating angles of a shape memory polymer cantilever beam are analyzed under small and moderate deflections and rotations. A semi-analytical approach is used to inspect Euler-Bernoulli beam theory, while finite-element method is employed to study von-Karman beam theory. In the following, a smart structure is analyzed using a prepared user-defined subroutine, VUMAT, in finite-element package, ABAQUS/EXPLICIT. Utilizing generated user-defined subroutine, smart structures composed of shape memory polymer material can be analyzed under complex loading circumstances through the two-way shape memory effect.
引用
收藏
页码:1465 / 1476
页数:12
相关论文
共 47 条
[1]   Developing a finite element beam theory for nanocomposite shape-memory polymers with application to sustained release of drugs [J].
Baghani, M. ;
Dolatabadi, R. ;
Baniassadi, M. .
SCIENTIA IRANICA, 2017, 24 (01) :249-259
[2]   An analytic investigation on behavior of smart devices consisting of reinforced shape memory polymer beams [J].
Baghani, M. ;
Taheri, A. .
JOURNAL OF INTELLIGENT MATERIAL SYSTEMS AND STRUCTURES, 2015, 26 (11) :1385-1394
[3]   An analytical solution for shape-memory-polymer Euler-Bernoulli beams under bending [J].
Baghani, M. ;
Mohammadi, H. ;
Naghdabadi, R. .
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES, 2014, 84 :84-90
[4]   A thermodynamically-consistent 3D constitutive model for shape memory polymers [J].
Baghani, M. ;
Naghdabadi, R. ;
Arghavani, J. ;
Sohrabpour, S. .
INTERNATIONAL JOURNAL OF PLASTICITY, 2012, 35 :13-30
[5]   Shape memory poly(ε-caprolactone)-co-poly(ethylene glycol) foams with body temperature triggering and two-way actuation [J].
Baker, Richard M. ;
Henderson, James H. ;
Mather, Patrick T. .
JOURNAL OF MATERIALS CHEMISTRY B, 2013, 1 (38) :4916-4920
[6]   A constitutive theory for shape memory polymers. Part I - Large deformations [J].
Chen, Yi-Chao ;
Lagoudas, Dimitris C. .
JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS, 2008, 56 (05) :1752-1765
[7]   Finite strain 3D thermoviscoelastic constitutive model for shape memory polymers [J].
Diani, J ;
Liu, YP ;
Gall, K .
POLYMER ENGINEERING AND SCIENCE, 2006, 46 (04) :486-492
[8]   Molecular dynamics simulations of the shape-memory behaviour of polyisoprene [J].
Diani, Julie ;
Gall, Ken .
SMART MATERIALS AND STRUCTURES, 2007, 16 (05) :1575-1583
[9]   Predicting thermal shape memory of crosslinked polymer networks from linear viscoelasticity [J].
Diani, Julie ;
Gilormini, Pierre ;
Fredy, Carole ;
Rousseau, Ingrid .
INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES, 2012, 49 (05) :793-799
[10]   Thermodynamic description and modeling of two-way shape-memory effect in crosslinked semicrystalline polymers [J].
Dolynchuk, Oleksandr ;
Kolesov, Igor ;
Radusch, Hans-Joachim .
POLYMERS FOR ADVANCED TECHNOLOGIES, 2014, 25 (11) :1307-1314