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CISM COURSES AND LECTURES
Series Editors: The Rectors Giulio Maier - Milan Jean Salençon - Pal...
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~ SpringerWienNewYork
CISM COURSES AND LECTURES
Series Editors: The Rectors Giulio Maier - Milan Jean Salençon - Palaiseau Wilhelm Schneider - Wien
The Secretary General Bernhard Schrefler - Padua
Executive Editor Paolo Serafini - Udine
The series presents lecture notes, monographs, edited works and proceedings in the field of Mechanics, Engineering, Computer Science and Applied Mathematics. Purpose of the series is to make known in the international scientific and technical community results obtained in some of the activities organized by CISM, the International Centre for Mechanical Sciences.
INTERNATIONAL CENTRE FOR MECHANICAL SCIENCES COURSES AND LECTURES - No. 515
ADVANCES IN CONSTITUTIVE RELATIONS APPLIED IN COMPUTER CODES
EDITED BY JANUSZ R. KLEPACZKO UNIVERSITÈ DE METZ, METZ CEDEX, FRANCE TOMASZ ŁODYGOWSKI POZNAN UNIVERSITY OF TECHNOLOGY, POZNAN, POLAND
This volume contains 158 illustrations
This work is subject to copyright. All rights are reserved, whether the whole or part of the material is concerned specifically those of translation, reprinting, re-use of illustrations, broadcasting, reproduction by photocopying machine or similar means, and storage in data banks. © 2009 by CISM, Udine Printed in Italy SPIN 12754533
All contributions have been typeset by the authors.
ISBN 978-3-211-99708-6 SpringerWienNewYork
PREFACE Many important industrial applications incline toward better understanding of the constitutive properties of matter. Nowadays, the development of measurement possibilities, even in nanoscale, allows for multiscale formulations that drive to the more sophisticated models used in continuum mechanics. These phenomenological models are particularly important and useful for solutions of very concrete initial boundary value problems. Our interests are focused mainly on detailed descriptions of material behavior that depend not only on simple stress-strain relationships but also includes the strong influence of loading type, which introduces temperature, strain rate dependence, fracture, etc. Understanding these physics phenomena is of fundamental importance for successful and responsible computations. In particular, using the popular commercial programs requires deep understanding of constitutive formulations and their restrictions. These lectures are addressed to industrial users who are responsible for making crucial decisions in design, as well as, to young scientists who work on new models that describe the behavior of materials which also account the new influences and reflect the complexity of the material behavior. At the end, let me express my gratitude to the lecturers of the CISM course No. 328 on “Advances in Constitutive Relations Applied in Computer Codes”, held in Udine in July 2007, who finally prepared the included materials. Unfortunately, during the preparation and collecting papers for this book, our friend and colleague Prof. Janusz R. Klepaczko passed away. This is a very big loss for the society of mechanics. Prof. J.R.Klepaczko was the initiator of this course and the editor of this material. We dedicate this book to His memory. Tomasz Lodygowski
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CONTENTS
Preface Tomasz Lodygowski Preface Janusz R. Klepaczko Constitutive Relations in Dynamic Plasticity, Pure Metals and Alloys by Janusz R. Klepaczko .................................................... 1 Modeling of Rubberlike Materials by A. Luis Dorfmann .................................................... 147 Imperfect Bonding with Nonpenetration Condition by George Mejak ........................................................... 203 Selected Constitutive Relations in Practical Computations by Tomasz Łodygowski .................................................. 261
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SDANA 7& @ALAJ@O QLKJ 7& )P ?=J >A ODKSJ PD=P 7& # 7& .KPA PD=P % =J@ PD=P BKN OI=HH R=HQAO KB EP EO RANU ?HKOA PK !P PDA AJ@ KB PDA EPAN=PEKJ =BPAN & 7$ OPALO PDA ANNKN EO >KQJ@A@ >U 7& PEIAO PDA EJEPE=H ANNKN 4DEO B=?PKN EO ?=HHA@ PDA =ILHE?=PEKJ B=?PKN &KN ?KILQP=PEKJ PK >A IA=JEJCBQH EP IQOP >A KB KN@AN # =J@ PDQO = ?KNNA?P NAH=PEKJ >APSAAJ 7$ =J@ 7& IQOP >A ?DKOAJ 3EJ?A
7& & 7& #
PDA PEIA OPAL IQOP >A KB KN@AN # 7& #KIL=NEJC JQIANE?=H ?KI LQP=PEKJ SEPD PDA =J=HUPE?=H OKHQPEKJ JKPA PD=P PDA EJEPE=H >KQJ@=NU R=HQA LNK>HAI BKN = DKIKCAJAKQO >=N D=O =J =J=HUPE?=H OKHQPEKJ BKN @AP=EHO OAA PDA JATP OQ>OA?PEKJ EP EO BKQJ@ PD=P BKN & =J@ 7& EP OQ?AO PK P=GA 4K OQII=NEVA EPAN=PEKJ EO ?KJ@EPEKJ=H OP=>HA =J@ OEJ?A @EO?NAPEV=PEKJ EO ?KJOEOPAJP EP EO =HOK ?KJRANCAJP OAA !HH=ENA +EJ?=E@ =J@ #DAJAU (ENO?D 7A SKQH@ HEGA JKS PK PN=JOBKNI PDA R=NE=PEKJ=H LNK>HAI EJPK = IEJE IEV=PEKJ LNK>HAI !O SA =HNA=@U JKPA@ % EO JKP LKOEPERA OEJ?A PDA BKNI 9 : EO JKP LKOEPERA ,AP QO PNU JKS PK OE@AOPAL PDEO LNK>HAI 4K PDEO AJ@ = 3 7& =J@ 2 = 3 2 EO L=NPEPEKJA@ EJPK 2 7& 4DQO 2 EJPANLKH=PAO BQJ?PEKJ R=HQAO =J@ 2 PEIA @ANER=PERAO 3LA?PN=H =J=HUOEO KB % NARA=HO PD=P PDA =>KRA L=NPEPEKJ @KAO JKP OAL=N=PA PDA AECAJOL=?AO KB PDA JAC=PERA =J@ PDA LKOEPERA AECAJR=HQAO %=?D AECAJ RA?PKN EO CERAJ =O = JKJPNERE=H HEJA=N ?KI>EJ=PEKJ KB 2 EJ 2 &KHHKSEJC L=NPEPEKJ KB 2 PDA I=PNET % EO L=NPEPEKJA@ EJPK PDA >HK?G I=PNE?AO
Imperfect Bonding with Nonpenetration Condition
211
=J@ KB @EIAJOEKJ 7& 7& %HEIEJ=PEJC 2 BNKI = NA@Q?A@ AJANCU BQJ?PEKJ=H !
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SDANA 7& EO LKOEPERA -=PNET EO PDQO =HS=UO LKOEPERA @AJEPA I=PNET BKN OQ?EAJPHU OI=HH 4DANABKNA IEJEIQI KB ! EO = @EO?NAPA OKHQPEKJ KB PDA EJEPE=H >KQJ@=NU R=HQA LNK>HAI ,AP QO JKS ?KJOE@AN = ?KILKOEPA >=N 4K OEILHEBU JKP=PEKJ EP EO =OOQIA@ PD=P PDA >=N EO I=@A KB PSK DKIKCAJAKQO >=NO KB PDA AMQ=H HAJCPD 'AJ AN=HEV=PEKJ PK =J =N>EPN=NU JQI>AN KB >=NO EO OPN=ECDPBKNS=N@ %JANCU KB PDA ?KILKOEPA >=N EO CERAJ =O = OQI KB PDA AJANCEAO KB EJ@ERE@Q=H >=NO LHQO PDA >KJ@EJC AJANCU KN 4DA @ACNAAO KB BNAA@KI =NA ?KI>EJA@ EJPK 7& PQLHA 5 !O EJ PDA =>KRA @EO?QOOEKJ 5 EO L=NPEPEKJA@ EJPK ! 7 =J@ 2 2 & (ANA PDA >KQJ@=NU @ACNAAO BNAA@KI KB PDA EJ@ERE@Q=H >=NO =NA AHAIAJPO ! PDA EJEPE=H ?KJ@EPEKJO =NA CERAJ >U 7 =J@ PDA NAI=EJEJC @ACNAAO =NA L=NPEPEKJA@ EJPK BQJ?PEKJ R=HQAO 2 =J@ PDAEN @ANER=PERAO 2 &QNPDAN ! EO L=NPEPEKJA@ EJPK ! =J@ ( ( (ANA ! =NA PDA >KQJ@=NU @ACNAAO KB PDA ?KILKOEPA >=N =J@ ( =J@ ( =NA PDA
212
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Imperfect Bonding with Nonpenetration Condition
213
SDANA 9 : EO OQ?EAJPHU OI=HH L=N=IAPAN !BPAN PDEO IK@E?=PEKJ PDA EPAN=PEKJ >A?KIAO OP=>HA &KN OI=HH 7& PDEO ?=J >A ODKSJ ATLHE?EPHU =J@ BKN H=NCA 7& PDEO EO ?KJNIA@ >U JQIANE?=H ?KILQP=PEKJO )J L=NPE?QH=N BKN 7& SA D=RA ! % !
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? B 1 B B B 4DAJ PDA =J=HUPE?=H OKHQPEKJ KB PDA LNK>HAI EO = EHEPU =J@ ?KJRANCAJ?A KB PDA IAPDK@ ?=J >A ATLHE?EPHU PAOPA@ 4K PDEO AJ@ SA P=GA =J@ , /JA ?=J ODKS PD=P PDEO ?=OA 1 EHEPU =J@ PDA ?KJRANCAJ?A EP EO = CKK@ AT=ILHA 2AOQHPO =NA ODKSJ EJ &ECQNA 4EIA EO =HKJC PDA =>O?EOO= =J@ @ ?KKN@EJ=PAO KB PDA LKEJPO KB PDA >=N =NA =HKJC PDA KN@EJ=PA =TEO #KKN@EJ=PAO KB JEJA LKEJPO EJ?HQ@EJC PDA AJ@ LKEJPO =NA ODKSJ )J PDA HABP CQNA NAOQHPO =NA ?KILQPA@ QOEJC .$3KHRA BQJ?PEKJ KB =PDAI=PE?= RANOEKJ OAA 7KHBN=I =J@ =P PDA NECDP =NA PDA NAOQHPO K>P=EJA@ >U PDA IAPDK@ DANA LNKLKQJ@A@ 2AOQHPO BNKI PDA NECDP CQNA I=P?D LANBA?PHU =J=HUPE?=H NAOQHPO )J PDA HABP CQNA SA K>OANRA OLQNEKQO KO?EHH=PEKJ 4NQA QOEJC JKJ @AB=QHP R=HQAO KB .$3KHRA BQJ?PEKJ PDA KO?EHH=PEKJ ?=J >A AHEIEJ=PA@ "QP PDEO NAMQENAO =@@EPEKJ=H AKNP =J@ ?=J >A PEIA ?KJOQIEJC .KPA PD=P PDA >KQJ@=NU ?KJ@EPEKJ 1 =N LNKL=C=PAO EJPK PDA >=N SEPD PDA QJEP RAHK?EPU 5OEJC OQ?EAJP ?KJ@EPEKJ QLKJ =@IEOOE>HA 1 A @ANERA@ &KN AT=ILHA =P @ PDA JKJKRANH=LLEJC ?KJ@EPEKJ % & EO
2 HAI PK PDA NA@Q?A@ LNK>HAI SDE?D EO LKOA@ KJ = OI=HHAN OAP KB @ACNAAO KB BNAA@KI 4DA KNECEJ=H OAP KB PDA @ACNAAO KB BNAA@KI 2 S=O NOP NA@Q?A@ PK PDA OAP KB @ACNAAO KB BNAA@KI 2 =J@ PDAJ PK ( )J PDEO OA?PEKJ PDEO E@A= EO BQNPDAN AH=>KN=PA@ !?PQ=HHU EP NEOAO PK = RANU A?EAJP ?KILQP=PEKJ=H IAPDK@ SDE?D SA ?=HH = PSK O?=HA JEPA AHAIAJP IAPDK@ /B ?KQNOA PDA E@A= KB PDA NA@Q?PEKJ EO JKP JAS )P EO SAHH GJKSJ =J@ EO =HOK GJKSJ =O PDA 3?DQN ?KILHEIAJP OAA BKN AT=ILHA 3==@
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220
George Mejak
QOA BKN ?ANP=EJ IAPDK@O SDE?D @A=H SEPD PSK O?=HA ?KILQP=PEKJO OAA BKN AT=ILHA #DAJ =J@ #QE .ARANPDAHAOO SA QOA PDEO J=IA >A?=QOA EP EO EJPNEJOE?=HHU ?KJJA?PA@ SEPD PDA >=OE? E@A= KB PDA JEPA AHAIAJP IAPDK@ =J@ @KAO JKP =O OKIA KPDAN IAPDK@O SDE?D OD=NA PDA J=IA =OOQIA =JUPDEJC OLA?E=H =>KQP PDA LNK>HAI OQ?D =O LANEK@E?EPU DKIKCAJEV=PEKJ KN =OUIL PKPE? ATL=JOEKJ KB PDA OKHQPEKJ 4DA IAPDK@ SDE?D SA LNAOAJPO SKNGO BKN =HH GEJ@ KB >KQJ@=NU R=HQA LNK>HAIO BKN SDE?D = OP=J@=N@ JEPA AHAIAJP IAPDK@ =LLHEAO )P ?KI>EJAO EJPK PDA JAS IAPDK@ PSK OP=J@=N@ JEPA AH AIAJP ?KILQP=PEKJO SEPD @EANAJP IAOD OEVAO KRAN PDA O=IA @KI=EJ )J PDA ?KJPATP KB PSK O?=HA ?KILQP=PEKJ SA ?=J OLA=G =>KQP IE?NK =J@ I=?NK O?=HA JEPA AHAIAJP IAPDK@ (KSARAN BKN PDA IAPDK@ EP EO JKP JA?AOO=NU PD=P PDA IAOD OEVAO @EAN >U =J KN@AN KB I=CJEPQ@A 4DA IAOD OEVAO ?=J >A ARAJ PDA O=IA =J@ =O SEHH >A ODKSJ PDA JAS IAPDK@ EO EJ PDEO ?=OA BNKI PDA ?KILQP=PEKJ=H LKEJP KB REAS OECJE?=JPHU >APPAN PD=J PDA OP=J@=N@ JEPA AHAIAJP IAPDK@ !P PDA DA=NP KB PDA IAPDK@ EO L=NPEPEKJ KB PDA @KI=EJ EJPK ?AHHO 4K A=?D ?AHH = ?AHH >KQJ@=NU R=HQA LNK>HAI SEPD = OAP KB >KQJ@=NU ?KJ@EPEKJO EO =OOK?E=PA@ 4DAOA LNK>HAIO =NA OKHRA@ >U PDA OP=J@=N@ JEPA AHAIAJP IAPDK@ 4DAEN OKHQPEKJO =NA ?=HHA@ ?AHH >=OEO BQJ?PEKJO !P PDA I=?NK O?=HA PDA OKHQPEKJ KB PDA LNK>HAI EO ATLNAOOA@ =O = HEJA=N ?KI>EJ=PEKJ KB PDA ?AHH >=OEO BQJ?PEKJO 4DAEN ?KA?EAJPO =NA @APANIEJA@ >U PDA 0APNKR'=HANGEJ OP=PAIAJP SEPD PDA SAECDPEJC BQJ?PEKJO BNKI PDA I=?NK JEPA AHAIAJP @EO ?NAPEV=PEKJ )J L=NPE?QH=N ?=OA SDANA PDA IAOD OEVAO =NA O=IA = OAP KB I=?NK @ACNAAO KB BNAA@KI EO FQOP PDA NA@Q?A@ OAP KB PDA @ACNAAO KB BNAA@KI KB PDA OP=J@=N@ JEPA AHAIAJP IAPDK@ 4DA OA?PEKJ EO KNC=JEVA@ =O BKHHKSO )J PDA OA?KJ@ OQ>OA?PEKJ @AO?NELPEKJ KB PDA IAPDK@ EO CERAJ SEPDEJ PDA BN=IASKNG KB PSK O?=HA ?KILQP=PEKJ &KN = IK@AH AHHELPE?=H >KQJ@=NU R=HQA LNK>HAI L=NPEPEKJ KB PDA LNK>HAI EJPK ?AHH LNK>HAIO EO EJPNK@Q?A@ 4SK JEPA AHAIAJP @EO?NAPEV=PEKJO =NA QOA@ PDA IE?NK =P PDA ?AHHO HARAH =J@ PDA I=?NK =P PDA CHK>=H HARAH 4DA ?AHH >KQJ@=NU R=HQA LNK>HAIO =NA =OOK?E=PA@ =J@ OKHRA@ >U PDA IE?NK JEPA AHAIAJP IAPDK@ SDE?D EO FQOP = OP=J@=N@ JEPA AHAIAJP IAPDK@ =P PDA IE?NK @EO?NAPEV=PEKJ HARAH 5OEJC PDA 0APNKR'=HANGEJ IAPDK@ PDA OUOPAI KB AMQ=PEKJO KB PDA I=?NK JEPA AHAIAJP IAPDK@ EO @ANERA@ )P EO ODKSJ PD=P = ?KJRANCAJ?A KN@AN KB PDA PSK O?=HA IAPDK@ EO PDA O=IA =O EO PDA KN@AN KB PDA I=?NK JEPA AHAIAJP @EO?NAPEV=PEKJ (KS PK =OOAI>HA PDA CHK>=H OUOPAI KB PDA I=?NK AHAIAJP @EO?NAPEV=PEKJ EO @EO?QOOA@ EJ JATP OQ>OA?PEKJ )P EO ODKSJ PD=P PDA OUOPAI EO LKOEPERA @AJEPA EB PDA LNK>HAI EO OPNKJCHU AHHELPE? #KIL=NEOKJ KB PDA PSK O?=HA IAPDK@ SEPD PDA OP=J@=N@ JEPA AHAIAJP IAPDK@ EO @KJA EJ 3A?PEKJ #KIL=NEOKJ EO EJ PANIO KB PDA ?KILQP=PEKJ=H PEIA =J@ PDA NAMQENA@ IAIKNU )P EO ODKSA@ PD=P PDA PSK O?=HA IAPDK@ EO O?EAJPE?=HHU
Imperfect Bonding with Nonpenetration Condition
221
IKNA AA?PERA .QIANE?=H AT=ILHAO BKN OKIA IK@AH LNK>HAIO =NA CERAJ EJ PDA ?KJ?HQ@EJC OQ>OA?PEKJ
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SDANA
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Imperfect Bonding with Nonpenetration Condition 18
19
223
20 21
17
15 16
14
10
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224
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Imperfect Bonding with Nonpenetration Condition
225
EO K>P=EJA@ BKN QJGJKSJ ?KA?EAJPO ' ! (ANA 9 5 OQLL " =J@ $ 9 8 OQLL !! OQLL " 3KHQPEKJ KB CERAO ' ! =J@ =BPAN PD=P =NA K>P=EJA@ BNKI 4DEO CERAO PDA ?AHH >=OEO BQJ?PEKJO !! =J@ J=HHU = PSK O?=HA JEPA AHAIAJP OKHQPEKJ ' ' ! !! KB PDA LNK>HAI (KS PK NASNEPA EJ PANIO KB ?AHHO IE?NK JEPA AHAIAJP OPEJAOO I=PNE?AO SEHH >A ODKSJ EJ PDA JATP OQ>OA?PEKJ #KJRANCAJ?A KB PDA PSK O?=HA JEPA AHAIAJP IAPDK@ BKHHKSO BNKI 0APNKR '=HANGEJ OP=PAIAJP )P BKHHKSO BNKI =J@ PD=P + = ' )
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226
George Mejak
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Imperfect Bonding with Nonpenetration Condition
227
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228
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Imperfect Bonding with Nonpenetration Condition
229
PDQO PDAEN ?KILQP=PEKJ=H ?KOP IQOP >A =@@A@ PK PDA ?KILQP=PEKJ=H ?KOP KB PDA PSK O?=HA IAPDK@ &KN A=?D ?AHH PDA ?AHH JEPA AHAIAJP LNK>HAI BKN 6 HK=@O D=O PK >A OKHRA@ 4DA LNK>HAI D=O 7 6 @ACNAAO KB BNAA@KI =J@ PDAEN KLAN=PEKJ ?KQJP EO 7!# 7!# 6 7!# 2AIAI>ANEJC PD=P @AJKPAO = JQI>AN KB ?AHHO SEPD @EANAJP I=PANE=H LNKLANPEAO =J@ @AJKPEJC >U = JQI>AN KB @EANAJP HK=@O 0 PDA PKP=H KLAN=PEKJ ?KQJP KB OKHREJC PDA I=?NK AHAIAJP OPEJAOO OUOPAI EO "!#
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230
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=J@ EJ PDA SKNOP ?=OA SDANA
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1.5 1.25 1 0.75 0.5 0.25 0.002 0.004 0.006 0.008
0.01
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Imperfect Bonding with Nonpenetration Condition
249
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251
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252
George Mejak
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Imperfect Bonding with Nonpenetration Condition
0.
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George Mejak
Debonded area
254 70 60 50 40 30 20 10 0 0.2 0.4 0.6 0.8 1 Strain
1.2 1.4
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256
George Mejak 70 Debonded area
Stress
0.15 0.125 0.1 0.075 0.05 0.025
60 50 40 30 20 10 0
0.2 0.4 0.6 0.8 1 1.2 1.4 Strain
0.2 0.4 0.6 0.8 1 Strain
1.2 1.4
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0.16 0.14 0.12 0.1 0.08 0.06 0.04 0.02
Debonded area
Stress
Imperfect Bonding with Nonpenetration Condition
257
70 60 50 40 30 20 10 0
0.2 0.4 0.6 0.8 1 1.2 1.4 Strain
0.2 0.4 0.6 0.8 1 Strain
1.2 1.4
Debonded area
Young modulus
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1.4 1.3 1.2 1.1 1 0.2 0.4 0.6 0.8 1 1.2 1.4 Strain
70 60 50 40 30 20 10 0 0.2 0.4 0.6 0.8 1 1.2 1.4 Strain
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258
George Mejak
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Imperfect Bonding with Nonpenetration Condition
259
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260
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