Open Access
ARTICLE
T. Yoda1, N. Kodama2
CMES-Computer Modeling in Engineering & Sciences, Vol.11, No.1, pp. 1-8, 2006, DOI:10.3970/cmes.2006.011.001
Abstract A nonlinear dynamic response analysis of a box section steel rigid frame under seismic action is proposed on the basis of a beam model. The average stress-strain relation of the beam model can be formulated for transverse stiffener spacing, in which stress-strain relation after local buckling is assumed. As a result of the present study, the maximum lateral displacements and the residual displacements of a box section steel rigid frame were well estimated by the proposed beam element model that considers the deterioration effect due to local buckling. More >
Open Access
ARTICLE
Jae Bong Lee1, Jai Hak Park1, Sung Ho Lee2, Hong-Deok Kim2, Han-Sub Chung2
CMES-Computer Modeling in Engineering & Sciences, Vol.11, No.1, pp. 9-16, 2006, DOI:10.3970/cmes.2006.011.009
Abstract The growth of stress corrosion cracks in steam generator tubes is predicted using the Monte Carlo simulation and statistical approaches. The statistical parameters that represent the characteristics of crack growth and crack initiation are derived from in-service inspection (ISI) non-destructive evaluation (NDE) data. Based on the statistical approaches, crack growth models are proposed and applied to predict crack distribution at the end of cycle (EOC). Because in-service inspection (ISI) crack data is different from physical crack data, a simple method for predicting the physical number of cracks from periodic in-service inspection data is proposed in this study. Actual number of… More >
Open Access
ARTICLE
S. Yoshimura 1
CMES-Computer Modeling in Engineering & Sciences, Vol.11, No.1, pp. 17-26, 2006, DOI:10.3970/cmes.2006.011.017
Abstract This paper describes a development of an
advanced traffic simulator based on a multi-agent approach
which is named MATES (Multi-Agent based
Traffic and Environment Simulator). City traffic phenomena
are essentially regarded as complex systems consisting
of a number of human beings. Each element creating
traffic phenomena such as car (driver), traffic signal,
pedestrian and others is modeled as an intelligent
agent that possesses its own logic of behavior and preference.
The environment surrounding each agent consists
of other cars, road network, traffic signals, pedestrian
and others. Interaction among numerous agents simulates
nonlinear behaviors of city traffic phenomena. First
we describe… More >
Open Access
ARTICLE
Daiki Shiozawa1, Shiro Kubo2, Takahide Sakagami2, Masaaki Takagi2
CMES-Computer Modeling in Engineering & Sciences, Vol.11, No.1, pp. 27-36, 2006, DOI:10.3970/cmes.2006.011.027
Abstract The passive electric potential CT (computed tomography) method using piezoelectric film was applied to the identification of plural through cracks. The use of piezoelectric material made it possible to obtain electric potential field without applying electric current. For identification of cracks an inverse analysis scheme based on the least residual method was applied, in which square sum of residuals is evaluated between the measured electric potential distributions and those computed by using the finite element method. Akaike information criterion (AIC) was used to estimate the number of cracks. Numerical simulations were carried out on the identification of plural cracks and… More >
Open Access
ARTICLE
M. Perl1, C. Levy 2, V. Rallabhandy 2
CMES-Computer Modeling in Engineering & Sciences, Vol.11, No.1, pp. 37-48, 2006, DOI:10.3970/cmes.2006.011.037
Abstract The Bauschinger Effect (BE) impact on
KIN– the combined, Mode I, 3-D Stress Intensity Factor
(SIF) distributions for arrays of radial, internal, surface
cracks emanating from the bore of a fully or partially
autofrettaged thick-walled cylinder is investigated.
A in-depth comparison between the combined SIFs for a
“realistic” - Bauschinger Effect Dependent Autofrettage
(BEDA) and those for an “ideal” - Bauschinger Effect
Independent Autofrettage (BEIA) is performed. The 3-
D finite element (FE) analysis is performed employing
the submodeling technique and singular elements along
the crack front. Both autofrettage residual stress fields,
BEDA and BEIA, are simulated using an equivalent… More >
Login
Register
Submit a Paper
Propose a Special lssue