Journal of Japan Society of Civil Engineers, Ser. E2 (Materials and Concrete Structures) 75(2) 95-105 2019
<p> In this study, the estimating method for ground anchors' tension were considered using X-ray stress measurement to measure the surface stress on the bearing plate which is one of the constituted member of the ground anchor. In investigate abou...
Fatigue crack propagation stage is considered to be the dominant in fatigue fracture of welded joints and some solutions regarding stress issue have been developed. In order to ensure reliability of large scale welded structures, multilateral coun...
Due to the increase of the amount of traffic and the weight of trucks, the fatigue cracks are occurring at the welding joints of steel bridges. This report shows the properties on the surface and depth direction of residual stress of welded joint ...
Journal of Japan Society of Civil Engineers, Ser. A2 (Applied Mechanics (AM)) 74(2) I_337-I_347 2018
In order to improve the fatigue life of welded joint, additional weliding, glinder and peening technologies have been used, and also the effeciancy of the techniques have been provened by experiment evidences. However, great concerns are remained ...
C. Shiga, H. Murakawa, K. Hiraoka, N. Osawa, H. Yajima, T. Tanino, S. Tsutsumi, T. Fukui, H. Sawato, K. Kamita, T. Matsuzaki, T. Sugimura, T. Asoda, K. Hirota
Kozo Kogaku Ronbunshu. A (Journal of Structural Engineering. A) 63(0) 609-618 2017
The Finite Element analyses carried out in this paper aimed to examine the effect of the weld bead shape on the fatigue crack initiation and propagation lives of a non-load carrying fillet joint under cyclic loading condition. At the same time, th...
構造工学論文集 A(CD-ROM) 62(0) ROMBUNNO.10‐6-692 Mar 2016
Hammer peening is one of techniques for improving fatigue strength by introducing compressive residual stress at weld toe. Hammer peening by using ICR (impact crack closure retrofit) treatment device, where flat area in front of weld toe is intent...
A tangential plasticity model has been adopted to more accurate predictions of cyclic loading behavior of a thin wall bridge pier under the bidirectional lateral non-proportional loadings. According to comparing a numerical simulation result with ...
Elastoplastic constitutive theory with tangential plasticity, which is able to describe the inelastic strain rate due to the stress rate tangential to the plastic potential surface, has been proposed for prediction accuracy enhancement of the inel...
The objective of this study is to develop a new cohesive zone model to simulate transgranular fatigue crack propagation in polycrystalline meso-scale structures of metals. The proposed model is a combination of the interatomic potential-based cohe...
A crystal plasticity FE analysis is conducted to understand the fatigue phenomena subjected to cyclic stresses. For simplicity, the crystal plasticity model assumes an isotropic hardening/softening and an isotopic elasticity. The effec...
In order to simulate mechanical fatigue phenomena represented under macroscopically elastic condition, the plastic stretching within a yield surface has to be described, whilst the plastic strain is induced remarkably as the stress approaches the ...
TSUTSUMI Seiichiro, TOYOSADA Masahiro, MURAKAMI Koji
Transactions of the Japan Society of Mechanical Engineers. A 73(730) 724-731 Jun 2007
In order to describe cyclic plasticity phenomena the plastic stretching within a yield surface has to be considered. Subloading surface model categorized in the unconventional plasticity models and describing a smooth elastic-plastic transition wo...
TSUTSUMI Seiichiro, TOYOSADA Masahiro, MURAKAMI Koji
Transactions of the Japan Society of Mechanical Engineers. A 73(730) 724-731 Jun 2007
In order to describe cyclic plasticity phenomena the plastic stretching within a yield surface has to be considered. Subloading surface model categorized in the unconventional plasticity models and describing a smooth elastic-plastic transition wo...
International Journal of Plasticity 23 767-797 May 2007
An extended gradient elastoplastic constitutive equation is formulated, which is capable of describing the plastic strain rate due to the rate of stress inside the yield surface and the inelastic strain rate due to the stress rate component tangen...
Plastic stretching within a yield surface has to be considered to describe cyclic plasticity phenomena. An elastoplastic constitutive model incorporating subloading surface concept has been proposed for materials exhibiting not only a purely elast...
KANEKO Kenji, TSUTSUMI Seiichiro, TAKASHIMA Takayuki, KUMAGAI Koji
Doboku Gakkai Ronbunshuu C 62(3) 667-678 2006
Multi-scale modeling based on the mathematical homogenization theory explains to us that the micro-scale problem in multi-scale modeling provide a constitutive (stress-strain) relationship for the macro-scale problem of a overall structure. We foc...
International Journal of Plasticity 21 1941-1969 Oct 2005
In order to clarify the necessary factors in the elastoplastic constitutive equations for describing the general non-proportional loading behavior of soils, the mechanical responses to the stress probe test and the principal stress axes rotation a...
This paper investigates bifurcation behavior of an elasto-plastic material under plane strain deformation. A simple and isotropic material in finite strains based on the multiplicative decomposition of the deformation gradient and Hencky's hyperel...
International Journal of Plasticity 19 1651-1677 Oct 2003
The generalized elastoplastic constitutive equation for soils is proposed based on the subloading surface model extended so as to describe the dependence of both the magnitude and the direction of inelastic stretching on the stress rate tangential...
Journal of the Mechanics and Physics of Solids 51 1649-1673 Sep 2003
The diffuse mode bifurcation of elastoplastic solids at finite strain is investigated. The multiplicative decomposition of deformation gradient and the hyperelasto-plastic constitutive relationship are adapted to the numerical bifurcation analysis...
Conventional elastoplasticity is based on the idealisation that the interior of the yield surface is a purely elastic domain. This idealisation would not lead to unrealistic prediction of hardening behaviour, but would cause unrealistic prediction...
It is widely known that the principal stress directions rotates in foundations subjected to the cyclic loading due to wheel traveling, tidal wave, earthquake, etc. Besides, it has been indicated that the direction and the magnitude of inelastic de...
The conventional elastoplasticily is based on the idealization that the interior of the yield surface is a purely elastic domain. This idealization would not lead to unrealistic prediction of hardening behavior but would cause unrealistic predicti...
Journal of the Japanese Society of Agricultural Machinery 63(3) 67-73 May 2001
Inelastic deformation behavior of ground beneath footing subjected to cyclic loading was predicted by elastoplastic finite element (FE) program in which the extended subloading surface model was incorporated. Considering the translation of similar...
International journal of plasticity 17 117-145 Jan 2001
In traditional elastoplastic constitutive equation with a single smooth plastic potential surface, the plastic stretching is independent of the tangential stress rate, i.e. the component of stress rate which is tangential to the yield surface. Thi...
Journal of the Japanese Society of Agricultural Machinery 62(4) 71-80 Jul 2000
It is required to take account of the plastic instability phenomenon with the bifurcation and the localization of deformation for the analysis of the large deformation process, aiming at the development of mechanical design of agricultural machine...
Journal of the Japanese Society of Agricultural Machinery 62(3) 68-75 May 2000
The plastic instability phenomenon exhibiting the bifurcation of deformation mode and the localization of deformation is observed in a large plastic deformation process leading a material to failure. The prediction of this phenomenon is of importa...
Journal of the Japanese Society of Agricultural Machinery 62(1) 64-72 Jan 2000
In order to analyze the soil-water coupled finite deformation behavior, the FEM program is developed by introducing the extended subloading surface model (unconventional elastoplastic constitutive model) which is capable of describing not only the...
Metals and Materials International 4 345-349 Dec 1998
The subloading surface model does not premise that the stress exists on the yield surface and thus describes a plastic deformation even when the stress exists inside the yield surface. The measure describing the degree that the stress approaches t...
Journal of the Faculty of Agriculture, Kyushu University 42(1) 225-235 Dec 1997
The extension of the elastoplastic constitutive equation so as to describe the plastic stretching due to the stress rate component tangential to the yield or loading surface has been one of the most pressing problems in the elastoplasticity. To th...
Cyclic plasticity model to predict transitional fatigue behavior from macroscopically elastic to elastoplastic response
Seiichiro TSUTSUMI
Proceedings of the 2nd Japan-China Joint Symposium on Fatigue of Engineering Materials and Structures CD-ROM Oct 2011
Cyclic softening behavior and fatigue crack initiation life predicted by an extended elastoplasticity model
Seiichiro TSUTSUMI
Proceedings of National Symposium on Welding Mechanics and Design 2011 415-418 Nov 2011
Evaluation of Fatigue Crack Initiation Life under Macroscopically Elastic Stressing
Seiichiro TSUTSUMI
Proceedings of the 61st National Congress of Theoretical and Applied Mechanics OS11-22 Mar 2012
Crystal Plasticity FE Analysis on Cyclic Softening Behavior and Inclusion Effect
Seiichiro Tsutsumi, Naoyuki Yamato, Koji Gotoh and Fionn Dunne
Proceedings of the Conference on Computational Engineering and Science CD-ROM May 2012
Prediction of Cyclic Hardening/Softening Behavior and Fatigue Crack Initiation Life
Seiichiro TSUTSUMI
Proceedings of the 61st JSMS Annual Meetings USB May 2012
Cyclic plasticity model to predict transitional fatigue behavior from macroscopically elastic to elastoplastic response
Seiichiro TSUTSUMI
Proceedings of the 22nd International Ocean and Polar Engineering Conference CD-ROM Jun 2012 [Refereed]
Prediction of Fatigue Crack Initiation Life Based on the Extended Cyclic Plasticity Model
Seiichiro TSUTSUMI
Proceedings of the 31st International Conference on Ocean, Offshore and Arctic Engineering CD-ROM Jul 2012 [Refereed]
Cyclic Softening and Fatigue Cracking Predicted by an Extended Plasticity Model with Damage Counting Parameter
Preprints of the National Meeting of JWS 2018(0) 268-269 2018
A combination of elastic-plastic material and fracture mechanics approach is presented by means of FEM. The interaction integral method is used. Calculated results are verified with experiments.
The Proceedings of The Computational Mechanics Conference 2018(0) 2018
<p>The objective of this study is to predict the fatigue lifetime of structural steel using cohesive-traction embedded elasto-plastic damage model with kinematic hardening. By the cohesive-traction embedded damage model, the elasto-plastic model i...
This paper deals with beam-end details of non-scallop method for field welding. The welding position of the lower flange in field welding is downward, the scallop construction method is generally used as the non-scallop construction method i...
Preprints of the National Meeting of JWS 2017(0) 72-73 2017
The present work proposes a coupled elastoplastic and damage model able to predict the material failure under both proportional and non-proportional loading paths.
