In order to use the Abaqus Concrete Damaged Plasticity (CDP) material model in simulations of reinforced concrete structures, one has to understand the effect of various parameters of the material model. Although most of the material parameters can be determined from standard concrete tests, some parameters need more advanced tests to be determined. In impact simulations, one often has only limited material data available, and it makes therefore sense to study the parameter sensitivity of the material model in order to fix realistic parameter values. In this paper, the sensitivity of the simulation response with respect to two modelparameters is studied: the dilation angle and the tensile to compressive meridian ratio. The sensitivity study is performed in three simple but representative stress states: the uniaxial tension state, the confined uniaxial compressive state and the pure shear state. Finally, it is discussed how these simple stress states relate to the element removal criteria, which is necessary in simulations involving fragmentation.
{"title":"Behavior of the Abaqus CDP model in simple stress states","authors":"Alexis Fedoroff, K. Calonius, Juha Kuutti","doi":"10.23998/RM.75937","DOIUrl":"https://doi.org/10.23998/RM.75937","url":null,"abstract":"In order to use the Abaqus Concrete Damaged Plasticity (CDP) material model in simulations of reinforced concrete structures, one has to understand the effect of various parameters of the material model. Although most of the material parameters can be determined from standard concrete tests, some parameters need more advanced tests to be determined. In impact simulations, one often has only limited material data available, and it makes therefore sense to study the parameter sensitivity of the material model in order to fix realistic parameter values. In this paper, the sensitivity of the simulation response with respect to two modelparameters is studied: the dilation angle and the tensile to compressive meridian ratio. The sensitivity study is performed in three simple but representative stress states: the uniaxial tension state, the confined uniaxial compressive state and the pure shear state. Finally, it is discussed how these simple stress states relate to the element removal criteria, which is necessary in simulations involving fragmentation.","PeriodicalId":52331,"journal":{"name":"Rakenteiden Mekaniikka","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47700946","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Artikkeli on koostettu kolmesta kurssin 920002J, Tieteellinen tutkimus ja etiikka, kevään 19.03.–10.04.2018 esseestä, jotka käsittelevät tutkimuksen eettisiä kysymyksiä ja haasteita. Teknillisen mekaniikan alalla tieteen etiikasta keskustellaan aivan liian vähän, ja tämän artikkelin tarkoituksena on toimia keskustelun avaajana toivottavasti samalla tuoden myös uusia näkökulmia aiheeseen. Osa näistä eettisistä asioista on Suomessa syntyneelle, eläneelle ja suomalaisen arvomaailman omaavalle henkilölle itsestäänselvyyksiä.
{"title":"Essee teknillisen mekaniikan tutkimuksen eettisistä kysymyksistä ja haasteista","authors":"Tero Frondelius, Antti Mäntylä, Joona Vaara","doi":"10.23998/RM.75741","DOIUrl":"https://doi.org/10.23998/RM.75741","url":null,"abstract":"Artikkeli on koostettu kolmesta kurssin 920002J, Tieteellinen tutkimus ja etiikka, kevään 19.03.–10.04.2018 esseestä, jotka käsittelevät tutkimuksen eettisiä kysymyksiä ja haasteita. Teknillisen mekaniikan alalla tieteen etiikasta keskustellaan aivan liian vähän, ja tämän artikkelin tarkoituksena on toimia keskustelun avaajana toivottavasti samalla tuoden myös uusia näkökulmia aiheeseen. Osa näistä eettisistä asioista on Suomessa syntyneelle, eläneelle ja suomalaisen arvomaailman omaavalle henkilölle itsestäänselvyyksiä.","PeriodicalId":52331,"journal":{"name":"Rakenteiden Mekaniikka","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41327398","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
"Patentability" refers to conditions laid down by law to what can be patented and what cannot. In this study, changes in the patentability of simulation methods are compared with the rapid development of computational science since 1970s. Although technological progress has caused computational simulation and modelling methods to grow to an everyday tool of technology, these methods have traditionally been excluded from patentability as "non-technical subject matter" or "abstract ideas". We describe the changes in patentability criteria in Europe and in the USA, and illustrate the development of patenting activity in this field during the last decade. Practisers should be aware of these changes, and investigate the possibilities they might offer.
{"title":"Patentability of mathematical modelling and simulation methods","authors":"S. Holopainen, Olli-Pekka Piirilä, Antti Salmela","doi":"10.23998/RM.76251","DOIUrl":"https://doi.org/10.23998/RM.76251","url":null,"abstract":"\"Patentability\" refers to conditions laid down by law to what can be patented and what cannot. In this study, changes in the patentability of simulation methods are compared with the rapid development of computational science since 1970s. Although technological progress has caused computational simulation and modelling methods to grow to an everyday tool of technology, these methods have traditionally been excluded from patentability as \"non-technical subject matter\" or \"abstract ideas\". We describe the changes in patentability criteria in Europe and in the USA, and illustrate the development of patenting activity in this field during the last decade. Practisers should be aware of these changes, and investigate the possibilities they might offer.","PeriodicalId":52331,"journal":{"name":"Rakenteiden Mekaniikka","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42820433","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
When design steel structures, structural fire safety design is equally important as loading-bearing design. Currently, structural fire design is moving from prescriptive approach to performance-based approach. One of the key essential techniques for performance-based approach is the numerical analysis technique of steel structures in fire using advanced calculation models. In this paper, the structural fire analysis procedure from 2D temperature analysis to structural response using Ls-Dyna was developed and validated by the fire tests of a simply supported beam, a simple steel frame and a both axially and rotationally restrained steel column. 2D implicit temperature analysis is efficient in these cases and sufficient accuracy was achieved. Using explicit solver, structural response in fire can be simulated up to collapse with the considerations of the temperature-dependent material non-linearity and possible contacts in joints. Both beam element models and shell element models were developed and the structural responses were compared with the fire tests from literature. Results show that the developed modeling techniques using Ls-Dyna explicit solver can effectively capture the key behavior of steel structures in fires. These key behavior includes deformation responses of beam and column, axial forces developed due to restraints and fire resistance time.
{"title":"Structural fire analysis of simple steel structures by using LS-DYNA explicit solver","authors":"Zhongcheng Ma, Jarmo Havula, M. Heinisuo","doi":"10.23998/RM.77252","DOIUrl":"https://doi.org/10.23998/RM.77252","url":null,"abstract":"When design steel structures, structural fire safety design is equally important as loading-bearing design. Currently, structural fire design is moving from prescriptive approach to performance-based approach. One of the key essential techniques for performance-based approach is the numerical analysis technique of steel structures in fire using advanced calculation models. In this paper, the structural fire analysis procedure from 2D temperature analysis to structural response using Ls-Dyna was developed and validated by the fire tests of a simply supported beam, a simple steel frame and a both axially and rotationally restrained steel column. 2D implicit temperature analysis is efficient in these cases and sufficient accuracy was achieved. Using explicit solver, structural response in fire can be simulated up to collapse with the considerations of the temperature-dependent material non-linearity and possible contacts in joints. Both beam element models and shell element models were developed and the structural responses were compared with the fire tests from literature. Results show that the developed modeling techniques using Ls-Dyna explicit solver can effectively capture the key behavior of steel structures in fires. These key behavior includes deformation responses of beam and column, axial forces developed due to restraints and fire resistance time.","PeriodicalId":52331,"journal":{"name":"Rakenteiden Mekaniikka","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45483434","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The load-carrying capacity of a K-type joint inside a floor truss is studied both experimentally and numerically. The joint tested is a scaled-down, isolated joint. The tubular braces, plate chord, and division plate are made of SSAB Domex steel. Comparison of load displacement curves received by finite element analyses with curves obtained from tests confirms that numerical models describe joint behaviour reasonable. The paper demonstrates that joints with high load-bearing capacity can be investigated experimentally by scaling the dimensions of the joint down when testing devices can affect the required capacity of the joint. The results presented can also be used for optimizing failure mechanism of similar joints in practice.
{"title":"Load-carrying capacity of welded K-type joints inside floor truss systems","authors":"P. Saremi, W. Lu, J. Puttonen, D. Pada, J. Kesti","doi":"10.23998/RM.74444","DOIUrl":"https://doi.org/10.23998/RM.74444","url":null,"abstract":"The load-carrying capacity of a K-type joint inside a floor truss is studied both experimentally and numerically. The joint tested is a scaled-down, isolated joint. The tubular braces, plate chord, and division plate are made of SSAB Domex steel. Comparison of load displacement curves received by finite element analyses with curves obtained from tests confirms that numerical models describe joint behaviour reasonable. The paper demonstrates that joints with high load-bearing capacity can be investigated experimentally by scaling the dimensions of the joint down when testing devices can affect the required capacity of the joint. The results presented can also be used for optimizing failure mechanism of similar joints in practice.","PeriodicalId":52331,"journal":{"name":"Rakenteiden Mekaniikka","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43488627","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Automaattiset sprinklerilaitteistot ovat tehokas keino pienentää rakennuspaloihin liittyviä riskejä. Ympäristöministeriön uusi asetus rakennusten paloturvallisuudesta on avannut uusia mahdollisuuksia sisällyttää sprinklereiden vaikutus rakennussuunnitteluun. Useissa kohteissa on voitu osoittaa, että esimerkiksi teräsosien palosuojauksen määrää voidaan vähentää merkittävästi tai jopa jättää kokonaan pois, silloin kun sprinklerijärjestelmä toimii suunnitellulla tavalla. Toimintavarmat ja palonkestävät suunnitteluratkaisut edellyttävät, että sprinklereille käytetyt luotettavuustasot sekä oletettuun palonkehitykseen perustuvat suunnittelumenetelmät ovat kattavasti perusteltuja. Tämä artikkeli esittelee tutkimuksen, jolla pyrittiin määrittämään sprinklerilaitteistojen luotettavuustasoja tyypillisissä rakennuskohteissa sekä arvioimaan mahdollisia hyötyjä voidaan saavuttaa, jos sprinklerijärjestelmän luotettavuus otetaan huomioon teräsrakenteiden rakennesuunnitteluun.
{"title":"Sprinklerilaitteiston luotettavuuden vaikutus teräsrakenteiden palomitoitukseen","authors":"Mikko Salminen, M. Nieminen, Mikko Malaska","doi":"10.23998/RM.74512","DOIUrl":"https://doi.org/10.23998/RM.74512","url":null,"abstract":"Automaattiset sprinklerilaitteistot ovat tehokas keino pienentää rakennuspaloihin liittyviä riskejä. Ympäristöministeriön uusi asetus rakennusten paloturvallisuudesta on avannut uusia mahdollisuuksia sisällyttää sprinklereiden vaikutus rakennussuunnitteluun. Useissa kohteissa on voitu osoittaa, että esimerkiksi teräsosien palosuojauksen määrää voidaan vähentää merkittävästi tai jopa jättää kokonaan pois, silloin kun sprinklerijärjestelmä toimii suunnitellulla tavalla. Toimintavarmat ja palonkestävät suunnitteluratkaisut edellyttävät, että sprinklereille käytetyt luotettavuustasot sekä oletettuun palonkehitykseen perustuvat suunnittelumenetelmät ovat kattavasti perusteltuja. Tämä artikkeli esittelee tutkimuksen, jolla pyrittiin määrittämään sprinklerilaitteistojen luotettavuustasoja tyypillisissä rakennuskohteissa sekä arvioimaan mahdollisia hyötyjä voidaan saavuttaa, jos sprinklerijärjestelmän luotettavuus otetaan huomioon teräsrakenteiden rakennesuunnitteluun.","PeriodicalId":52331,"journal":{"name":"Rakenteiden Mekaniikka","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48728847","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Tämän artikkelin tarkoitus on esitellä, miten poikittaistukemattoman paarteen nurjahduspituus voidaan määrittää hyödyntämällä ristikkorakenteen stabiloivia osia. Poikittaistukemattomalla paarteella työssä tarkoitetaan puristettua ristikkopilarin sisä- tai kattoristikon alapaarretta. Näissä tapauksissa on perinteisesti käytetty erillistä nurjahdustuentajärjestelmää, jotta nurjahduspituutta tasosta poispäin on voitu pienentää. Kuitenkin, vaikka sisä- tai alapaarre on kokonaan ilman erillistä poikittaistuentaa, voidaan nurjahduspituutta redusoida selvästi, jopa arvoon 0,3…0,4*L, jossa L on paarteen pituus. Tämä perustetaan siihen, että ristikkoa hyödynnetään kokonaisuutena ja otetaan huomioon uumasauvojen taivutus- ja liitosjäykkyydet sekä tukevan/vedetyn paarteen vääntöjäykkyys.
{"title":"Poikittaistukemattoman paarteen stabiilisuus","authors":"Tuomas Haapanen","doi":"10.23998/RM.66718","DOIUrl":"https://doi.org/10.23998/RM.66718","url":null,"abstract":"Tämän artikkelin tarkoitus on esitellä, miten poikittaistukemattoman paarteen nurjahduspituus voidaan määrittää hyödyntämällä ristikkorakenteen stabiloivia osia. Poikittaistukemattomalla paarteella työssä tarkoitetaan puristettua ristikkopilarin sisä- tai kattoristikon alapaarretta. Näissä tapauksissa on perinteisesti käytetty erillistä nurjahdustuentajärjestelmää, jotta nurjahduspituutta tasosta poispäin on voitu pienentää. Kuitenkin, vaikka sisä- tai alapaarre on kokonaan ilman erillistä poikittaistuentaa, voidaan nurjahduspituutta redusoida selvästi, jopa arvoon 0,3…0,4*L, jossa L on paarteen pituus. Tämä perustetaan siihen, että ristikkoa hyödynnetään kokonaisuutena ja otetaan huomioon uumasauvojen taivutus- ja liitosjäykkyydet sekä tukevan/vedetyn paarteen vääntöjäykkyys.","PeriodicalId":52331,"journal":{"name":"Rakenteiden Mekaniikka","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43963413","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
We propose a conservative method for the calculation of the maximum stress concentration factor (SCF) for an interacting notch-hole pair and for a double semi-circular notch (i.e., a notch that has an additional small semi-circular notch ahead of its tip). The method is based on a linearly elastic Airy stress function solution for a circular hole. The notch-hole and double notch configurations are aligned vertically with respect to uniform uniaxial (horizontal) stress. This means, a uniform horizontal tension is applied to a notch-hole pair that lie on a vertical axis. For the notch-hole pair, the maximum interacting SCFs are calculated for edge to edge gaps equal to hole sizes of 2.5a, 5a, 10a and 15a, where a is the hole radius. The analytical results are validated by 2-D finite element calculations. The presented simple approach provides good results with errors well below 10% in most cases compared to the detailed finite element analyses. Fatigue notch factors that can be thought of as the effective SCFs in fatigue analyses are determined. By using the simple approach, computationally costly finite element analysis can be avoided.
{"title":"A Stress concentration factor for interacting surface notch and subsurface hole","authors":"Silas Z. Gebrehiwot, H. Remes, Anssi T. Karttunen","doi":"10.23998/RM.70292","DOIUrl":"https://doi.org/10.23998/RM.70292","url":null,"abstract":"We propose a conservative method for the calculation of the maximum stress concentration factor (SCF) for an interacting notch-hole pair and for a double semi-circular notch (i.e., a notch that has an additional small semi-circular notch ahead of its tip). The method is based on a linearly elastic Airy stress function solution for a circular hole. The notch-hole and double notch configurations are aligned vertically with respect to uniform uniaxial (horizontal) stress. This means, a uniform horizontal tension is applied to a notch-hole pair that lie on a vertical axis. For the notch-hole pair, the maximum interacting SCFs are calculated for edge to edge gaps equal to hole sizes of 2.5a, 5a, 10a and 15a, where a is the hole radius. The analytical results are validated by 2-D finite element calculations. The presented simple approach provides good results with errors well below 10% in most cases compared to the detailed finite element analyses. Fatigue notch factors that can be thought of as the effective SCFs in fatigue analyses are determined. By using the simple approach, computationally costly finite element analysis can be avoided.","PeriodicalId":52331,"journal":{"name":"Rakenteiden Mekaniikka","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45337679","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
This paper deals with numerical integration of stresses, inelastic strains and internal variables related to coupled viscodamage-viscoplasticity models. The class of models considered here is the one where the viscodamage and viscoplasticity parts are described independently based on their specific loading/yield criteria and evolutions laws. Moreover, in the viscodamage part, an anisotropic compliance damage formulation is adopted. Both the viscodmage and the viscoplasticity components are formulated in terms of the consistency model by Wang (1997). Two methods for coupling the damage and the plasticity parts are presented. In the first more traditional method, both models are solved simultaneously returning the trial stress onto the intersection of the criteria while updating the internal variables. The second, nonstandard method exploits the damage strain to impose iteratively the stress equality on the stress vectors returned independently on the respective, viscodamage and viscoplasticity surfaces. A special emphasis is laid on the treatment of the corner point plasticity case. After the general treatment, the two methods are illustrated with an application to the Mohr-Coulomb viscoplasticity model combined with Rankine viscodamage model.
{"title":"On stress integration of coupled viscodamage-viscoplasticity models with separate yield/loading surfaces","authors":"T. Saksala","doi":"10.23998/RM.70462","DOIUrl":"https://doi.org/10.23998/RM.70462","url":null,"abstract":"This paper deals with numerical integration of stresses, inelastic strains and internal variables related to coupled viscodamage-viscoplasticity models. The class of models considered here is the one where the viscodamage and viscoplasticity parts are described independently based on their specific loading/yield criteria and evolutions laws. Moreover, in the viscodamage part, an anisotropic compliance damage formulation is adopted. Both the viscodmage and the viscoplasticity components are formulated in terms of the consistency model by Wang (1997). Two methods for coupling the damage and the plasticity parts are presented. In the first more traditional method, both models are solved simultaneously returning the trial stress onto the intersection of the criteria while updating the internal variables. The second, nonstandard method exploits the damage strain to impose iteratively the stress equality on the stress vectors returned independently on the respective, viscodamage and viscoplasticity surfaces. A special emphasis is laid on the treatment of the corner point plasticity case. After the general treatment, the two methods are illustrated with an application to the Mohr-Coulomb viscoplasticity model combined with Rankine viscodamage model. ","PeriodicalId":52331,"journal":{"name":"Rakenteiden Mekaniikka","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-12-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49521030","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Major developments in hardware and software enable researchers and engineers to apply non-linear finite-element analyses to study the behavior of tubular structures. However, to provide reasonable results, constructed finite element models should be verified and validated with experimental data. This article develops a finite element model for high strength steel rectangular hollow section T joints. The joints are considered under in-plane bending moment and axial brace loading. The paper determines the most suitable finite elements and the number of layers in the thickness direction for the numerical assessment of initial stiffness and modeling the whole action-deformation behavior of joints. Finally, the proposed FE model is validated with the series of experimental tests. The validation shows that the developed model properly captures the local behavior of tubular joints and can efficiently serve as a reliable tool in routine numerical analyses.
{"title":"Finite element model for rectangular hollow section T joints","authors":"M. Garifullin, S. Pajunen, K. Mela, M. Heinisuo","doi":"10.23998/RM.70439","DOIUrl":"https://doi.org/10.23998/RM.70439","url":null,"abstract":"Major developments in hardware and software enable researchers and engineers to apply non-linear finite-element analyses to study the behavior of tubular structures. However, to provide reasonable results, constructed finite element models should be verified and validated with experimental data. This article develops a finite element model for high strength steel rectangular hollow section T joints. The joints are considered under in-plane bending moment and axial brace loading. The paper determines the most suitable finite elements and the number of layers in the thickness direction for the numerical assessment of initial stiffness and modeling the whole action-deformation behavior of joints. Finally, the proposed FE model is validated with the series of experimental tests. The validation shows that the developed model properly captures the local behavior of tubular joints and can efficiently serve as a reliable tool in routine numerical analyses.","PeriodicalId":52331,"journal":{"name":"Rakenteiden Mekaniikka","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-12-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48088626","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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