Numerical modelling of pseudoelastic behaviour of NiTi porous plates
Identifieur interne : 000177 ( PascalFrancis/Checkpoint ); précédent : 000176; suivant : 000178Numerical modelling of pseudoelastic behaviour of NiTi porous plates
Auteurs : Bashir S. Shariat [Australie] ; YINONG LIU [Australie] ; Gerard Rio [France]Source :
- Journal of intelligent material systems and structures [ 1045-389X ] ; 2014.
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Abstract
This study presents a computational model for deformation behaviour of near-equiatomic NiTi holey plates using finite element method. Near-equiatomic NiTi alloy deforms via stress-induced A↔M martensitic transformation, which exhibits a typical hystoelastic mechanical behaviour over a stress plateau, known as the pseudoelasticity. In this model, the transformation stress is decomposed into two components: the hyperelastic stress, which describes the main reversible aspect of the deformation process, and the hysteretic stress, which describes the irreversible aspect of the process. It is found that with increasing the level of porosity (area fraction of holes), the apparent elastic modulus before and after the stress plateau decrease, the nominal stresses for the A↔M transformation decrease and the strain increases, and the pseudoelastic stress hysteresis decreases. In particular, the transformation strain increases by about 25% by introducing 32% porosity. Upon loading, the strain in a holey plate made of NiTi is more uniformly distributed than in a steel plate of the same geometry. The majority of steel plate remains in a low strain range, with a small portion highly strained. In NiTi, a large volume fraction of the plate undergoes moderate strains.
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Shariat</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Laboratory for Functional Materials, School of Mechanical and Chemical Engineering, The University of Western Australia</s1><s2>Crawley, WA</s2><s3>AUS</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ></inist:fA14><country>Australie</country><wicri:noRegion>Crawley, WA</wicri:noRegion></affiliation></author><author><name sortKey="Yinong Liu" sort="Yinong Liu" uniqKey="Yinong Liu" last="Yinong Liu">YINONG LIU</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Laboratory for Functional Materials, School of Mechanical and Chemical Engineering, The University of Western Australia</s1><s2>Crawley, WA</s2><s3>AUS</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ></inist:fA14><country>Australie</country><wicri:noRegion>Crawley, WA</wicri:noRegion></affiliation></author><author><name sortKey="Rio, Gerard" sort="Rio, Gerard" uniqKey="Rio G" first="Gerard" last="Rio">Gerard Rio</name><affiliation wicri:level="4"><inist:fA14 i1="02"><s1>Laboratoire d'Ingénierie des Matériaux de Bretagne, Université de Bretagne Sud, Université Européenne de Bretagne</s1><s2>Lorient</s2><s3>FRA</s3><sZ>3 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region">Région Bretagne</region><region type="old region">Région Bretagne</region><settlement type="city">Lorient</settlement><settlement type="city">Lorient</settlement></placeName><orgName type="university">Université de Bretagne-Sud</orgName></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">INIST</idno><idno type="inist">14-0250463</idno><date when="2014">2014</date><idno type="stanalyst">PASCAL 14-0250463 INIST</idno><idno type="RBID">Pascal:14-0250463</idno><idno type="wicri:Area/PascalFrancis/Corpus">000233</idno><idno type="wicri:Area/PascalFrancis/Curation">005C31</idno><idno type="wicri:Area/PascalFrancis/Checkpoint">000177</idno><idno type="wicri:explorRef" wicri:stream="PascalFrancis" wicri:step="Checkpoint">000177</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en" level="a">Numerical modelling of pseudoelastic behaviour of NiTi porous plates</title><author><name sortKey="Shariat, Bashir S" sort="Shariat, Bashir S" uniqKey="Shariat B" first="Bashir S." last="Shariat">Bashir S. Shariat</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Laboratory for Functional Materials, School of Mechanical and Chemical Engineering, The University of Western Australia</s1><s2>Crawley, WA</s2><s3>AUS</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ></inist:fA14><country>Australie</country><wicri:noRegion>Crawley, WA</wicri:noRegion></affiliation></author><author><name sortKey="Yinong Liu" sort="Yinong Liu" uniqKey="Yinong Liu" last="Yinong Liu">YINONG LIU</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Laboratory for Functional Materials, School of Mechanical and Chemical Engineering, The University of Western Australia</s1><s2>Crawley, WA</s2><s3>AUS</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ></inist:fA14><country>Australie</country><wicri:noRegion>Crawley, WA</wicri:noRegion></affiliation></author><author><name sortKey="Rio, Gerard" sort="Rio, Gerard" uniqKey="Rio G" first="Gerard" last="Rio">Gerard Rio</name><affiliation wicri:level="4"><inist:fA14 i1="02"><s1>Laboratoire d'Ingénierie des Matériaux de Bretagne, Université de Bretagne Sud, Université Européenne de Bretagne</s1><s2>Lorient</s2><s3>FRA</s3><sZ>3 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region">Région Bretagne</region><region type="old region">Région Bretagne</region><settlement type="city">Lorient</settlement><settlement type="city">Lorient</settlement></placeName><orgName type="university">Université de Bretagne-Sud</orgName></affiliation></author></analytic><series><title level="j" type="main">Journal of intelligent material systems and structures</title><title level="j" type="abbreviated">J. intell. mater. syst. struct.</title><idno type="ISSN">1045-389X</idno><imprint><date when="2014">2014</date></imprint></series></biblStruct></sourceDesc><seriesStmt><title level="j" type="main">Journal of intelligent material systems and structures</title><title level="j" type="abbreviated">J. intell. mater. syst. struct.</title><idno type="ISSN">1045-389X</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Deformation modulus</term><term>Elastic constant</term><term>Finite element method</term><term>Hyperelasticity</term><term>Hysteresis</term><term>Martensitic transformation</term><term>Mechanical deformation</term><term>Modeling</term><term>Nitinol</term><term>Phase transformation</term><term>Plate</term><term>Porosity</term><term>Shape memory alloy</term><term>Stress</term><term>Superelasticity</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Déformation mécanique</term><term>Superélasticité</term><term>Hyperélasticité</term><term>Hystérésis</term><term>Constante élasticité</term><term>Module déformation</term><term>Modélisation</term><term>Alliage mémoire forme</term><term>Nitinol</term><term>Porosité</term><term>Plaque</term><term>Méthode élément fini</term><term>Stress</term><term>Transformation phase</term><term>Transformation martensitique</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">This study presents a computational model for deformation behaviour of near-equiatomic NiTi holey plates using finite element method. Near-equiatomic NiTi alloy deforms via stress-induced A↔M martensitic transformation, which exhibits a typical hystoelastic mechanical behaviour over a stress plateau, known as the pseudoelasticity. In this model, the transformation stress is decomposed into two components: the hyperelastic stress, which describes the main reversible aspect of the deformation process, and the hysteretic stress, which describes the irreversible aspect of the process. It is found that with increasing the level of porosity (area fraction of holes), the apparent elastic modulus before and after the stress plateau decrease, the nominal stresses for the A↔M transformation decrease and the strain increases, and the pseudoelastic stress hysteresis decreases. In particular, the transformation strain increases by about 25% by introducing 32% porosity. Upon loading, the strain in a holey plate made of NiTi is more uniformly distributed than in a steel plate of the same geometry. The majority of steel plate remains in a low strain range, with a small portion highly strained. In NiTi, a large volume fraction of the plate undergoes moderate strains.</div></front></TEI><inist><standard h6="B"><pA><fA01 i1="01" i2="1"><s0>1045-389X</s0></fA01><fA03 i2="1"><s0>J. intell. mater. syst. struct.</s0></fA03><fA05><s2>25</s2></fA05><fA06><s2>12</s2></fA06><fA08 i1="01" i2="1" l="ENG"><s1>Numerical modelling of pseudoelastic behaviour of NiTi porous plates</s1></fA08><fA11 i1="01" i2="1"><s1>SHARIAT (Bashir S.)</s1></fA11><fA11 i1="02" i2="1"><s1>YINONG LIU</s1></fA11><fA11 i1="03" i2="1"><s1>RIO (Gerard)</s1></fA11><fA14 i1="01"><s1>Laboratory for Functional Materials, School of Mechanical and Chemical Engineering, The University of Western Australia</s1><s2>Crawley, WA</s2><s3>AUS</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ></fA14><fA14 i1="02"><s1>Laboratoire d'Ingénierie des Matériaux de Bretagne, Université de Bretagne Sud, Université Européenne de Bretagne</s1><s2>Lorient</s2><s3>FRA</s3><sZ>3 aut.</sZ></fA14><fA20><s1>1445-1455</s1></fA20><fA21><s1>2014</s1></fA21><fA23 i1="01"><s0>ENG</s0></fA23><fA43 i1="01"><s1>INIST</s1><s2>22109</s2><s5>354000507649440040</s5></fA43><fA44><s0>0000</s0><s1>© 2014 INIST-CNRS. All rights reserved.</s1></fA44><fA45><s0>1 p.1/4</s0></fA45><fA47 i1="01" i2="1"><s0>14-0250463</s0></fA47><fA60><s1>P</s1></fA60><fA61><s0>A</s0></fA61><fA64 i1="01" i2="1"><s0>Journal of intelligent material systems and structures</s0></fA64><fA66 i1="01"><s0>GBR</s0></fA66><fC01 i1="01" l="ENG"><s0>This study presents a computational model for deformation behaviour of near-equiatomic NiTi holey plates using finite element method. Near-equiatomic NiTi alloy deforms via stress-induced A↔M martensitic transformation, which exhibits a typical hystoelastic mechanical behaviour over a stress plateau, known as the pseudoelasticity. In this model, the transformation stress is decomposed into two components: the hyperelastic stress, which describes the main reversible aspect of the deformation process, and the hysteretic stress, which describes the irreversible aspect of the process. It is found that with increasing the level of porosity (area fraction of holes), the apparent elastic modulus before and after the stress plateau decrease, the nominal stresses for the A↔M transformation decrease and the strain increases, and the pseudoelastic stress hysteresis decreases. In particular, the transformation strain increases by about 25% by introducing 32% porosity. Upon loading, the strain in a holey plate made of NiTi is more uniformly distributed than in a steel plate of the same geometry. The majority of steel plate remains in a low strain range, with a small portion highly strained. 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Shariat</name></noRegion><name sortKey="Yinong Liu" sort="Yinong Liu" uniqKey="Yinong Liu" last="Yinong Liu">YINONG LIU</name></country><country name="France"><region name="Région Bretagne"><name sortKey="Rio, Gerard" sort="Rio, Gerard" uniqKey="Rio G" first="Gerard" last="Rio">Gerard Rio</name></region></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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