Kou kouzou rombunshuu
New Arrival Alert : OFF

You can use this feature after you logged into the site.
Please click the button below.

Log in / Sign up
ONLINE ISSN: 1884-0329
PRINT ISSN: 1880-9928

Kou kouzou rombunshuu Vol. 26 (2019), No. 101

  • PLASTIC DEFORMATION CAPACITY OF PRE-ASSEMBLED TYPE BUILT-UP H-SHAPED BEAM BY SUBMERGED ARC WELDING

    pp. 101_1-101_14

    Bookmark

    You can use this feature after you logged into the site.
    Please click the button below.

    Log in / Sign Up

    DOI:10.11273/jssc.26.101_1

    In this paper, the mechanical properties such as the toughness and the strength of the submerged arc weld (SAW) metal are investigated. Main target is the fillet weld metal by one pass SAW used for the built-up H-shaped beam. For comparison, the JIS deposited metal is also prepared. Charpy absorbed energy vE0 of the JIS deposited metal was higher than the specified value of JIS. On the other hand, vE0 of the fillet weld metal was lower than the JIS deposited metal, and some of the fillet weld metal was lower than the specified value of JIS.
  • PLASTIC DEFORMATION CAPACITY OF PRE-ASSEMBLED TYPE BUILT-UP H-SHAPED BEAM BY SUBMERGED ARC WELDING

    pp. 101_15-101_30

    Bookmark

    You can use this feature after you logged into the site.
    Please click the button below.

    Log in / Sign Up

    DOI:10.11273/jssc.26.101_15

    This paper investigates on the plastic deformation capacity of built-up H-shaped beam connected with RHS column. A total of sixteen specimens was tested under cyclic loading, with beam size, notch toughness and depth of penetration of submerged arc weld (SAW) as primary test variables. Test results showed that the increase in notch toughness of SAW lead to improvement of plastic deformation capacity, while the decrease in weld penetration did not correlate to decrease in plastic deformation capacity. FEA were also performed to provide insight into the impact of the beam size and the penetration of SAW on the plastic deformation capacity of the specimens.
  • PLASTIC DEFORMATION CAPACITY OF PRE-ASSEMBLED TYPE BUILT-UP H-SHAPED BEAM BY SUBMERGED ARC WELDING

    pp. 101_31-101_42

    Bookmark

    You can use this feature after you logged into the site.
    Please click the button below.

    Log in / Sign Up

    DOI:10.11273/jssc.26.101_31

    This paper investigates the toughness of submerged arc weld metal included in preassembled type build-up H-shaped beam which prevent the premature brittle fracture of moment connection. Deformation capacities before fracture of many kind of moment connections containing rolled H-shaped section beam are analyzed statistically and the indices of the deformation capacity are defined to evaluate the toughness. The relationship between the deformation capacity of the moment connection containing pre-assembled type build-up H-shaped beam and the toughness are investigated considering with the destruction property and the effect of loading protocol using the indices, which reveals the necessary value of the toughness to prevent the premature brittle fracture.
  • FATIGUE DAMAGE EVALUATION OF BELLOWS DAMPER ON EARTHQUAKE GROUND MOTION

    pp. 101_43-101_56

    Bookmark

    You can use this feature after you logged into the site.
    Please click the button below.

    Log in / Sign Up

    DOI:10.11273/jssc.26.101_43

    Fatigue design method of steel bellows damper during earthquake excitations is examined. Bellows dampers are connected between a girder and an abutment in order to reduce damage of superstructures and substructures. Low-cycle fatigue properties of the bellows damper are examined based on low cycle fatigue tests of the bellows damper and nonlinear dynamic response analyses of girder bridges with the bellows damper connected at both ends. Fatigue strength of the bellows is evaluated using P/V difference method which is one of cycle counting methods and Miner's cumulative damage law. Fatigue damage evaluation is performed by three methods using plastic strains,total displacements and plastic displacements of the bellows dampers as indices respectively. Further,a damage index based on cumulative plastic displacements is proposed. Validity of the proposed damage index is verified compared with the three methods of fatigue damage evaluation.
    x

    Readers Who Read This Article Also Read

    1. A Probabilistic Method for Constructing an Empirical Discrimination Model for Hammering Inspection of Cast-Iron Parts SICE Journal of Control, Measurement, and System Integration Vol.12(2019), No.6
  • DEFORMATION CAPACITY OF STEEL RIGID-FRAME PIERS WITH BUCKLING-RESTRAINED BRACES

    pp. 101_57-101_68

    Bookmark

    You can use this feature after you logged into the site.
    Please click the button below.

    Log in / Sign Up

    DOI:10.11273/jssc.26.101_57

    The use of buckling-restrained braces (BRBs) as energy dissipation dampers is attempted for seismic performance improving of steel rigid-frame piers. In this study, the effectiveness of BRBs which connected the steel rigid-frame piers with gusset-plate to protect the structures under cyclic loading is examined by test. Compared with load carrying capacity of the original structure, the strengthened model with BRBs is equivalent to deformation capacity and ultimate strength. After the test, it was found that further attention should be paid to the design of the stiffener for suppresses out-of-plane deformation of the gusset-plates.
  • A PROPOSAL FOR EVALUATING MECHANICAL PROPERTIES OF HIGH STRENGTH STEELS AFTER A FIRE

    pp. 101_69-101_78

    Bookmark

    You can use this feature after you logged into the site.
    Please click the button below.

    Log in / Sign Up

    DOI:10.11273/jssc.26.101_69

    This study is aimed at evaluating the residual properties of high strength structure steel (HSSS) after a fire. Tensile coupons obtained from the HSSS Q690 sheets were heated to various temperatures up to 900 °C, and then were cooled down in furnace to ambient temperature. Tensile coupon tests were carried out to obtain their post-fire mechanical properties and ductile fracture behaviors. Test results showed that the HSSS can keep the unchanged mechanical properties after it experiences temperatures up to 600 °C. As a result, prediction equations are obtained to evaluate the post-fire properties of HSSS.
  • MECHANICAL PROPERTIES OF STEELS FOR BRIDGE HIGH PERFORMANCE STRUCTURE SUBJECTED TO HEATING AND COOLING PROCESS SIMULATING FIRE

    pp. 101_79-101_86

    Bookmark

    You can use this feature after you logged into the site.
    Please click the button below.

    Log in / Sign Up

    DOI:10.11273/jssc.26.101_79

    For investigating effect of heating and cooling process simulating fire on mechanical properties of Steels for Bridge High Performance Structure (SBHS), a series of experiment was carried out. The heating of 600℃ did not change the mechanical properties of SBHS from those without heating and cooling. The heating of 900℃ and air cooling decreased the mechanical properties of SBHS due to softening. The heating of 900℃ and water cooling increased the ultimate strength due to hardening; however, it decreased the yield stress and elongation of SBHS to the level below that required by JIS.

Article Access Ranking

02 Dec. (Last 30 Days)

  1. Structural and Mechanical Characterizations of Top Dross in a Molten Zinc Bath ISIJ International Advance Publication
  2. Perspective toward Long-term Global Goal for Carbon Dioxide Mitigation in Steel Industry Tetsu-to-Hagané Vol.105(2019), No.6
  3. Determination of Facet Plane and Cleavage Fracture Plane of the Top Dross Formed in a Molten Zinc Bath ISIJ International Advance Publication
  4. Effect of Hydrogen Concentration in Reducing Gas on the Changes in Mineral Phases during Reduction of Iron Ore Sinter ISIJ International Advance Publication
  5. Effect of Microstructure at Coating Layer on Fatigue Strength in Hot-Dip Galvanized Steel ISIJ International Vol.60(2020), No.11
  6. Contributions of Grain Size and Crystal Orientation to Fatigue Crack Deflection and Branching Behavior in Low Carbon Steel Plates ISIJ International Advance Publication
  7. Identification of Cracking Issues and Process Improvements through Plant Monitoring and Numerical Modelling of Secondary Cooling during Continuous Casting of HSLA Steels ISIJ International Advance Publication
  8. Crystal Structure Analysis of Top Dross in Molten Zinc Bath by First Principles Calculation and Synchrotron X-ray Diffraction ISIJ International Advance Publication
  9. Volumetric Strain Dependence of Quantum Diffusion of Hydrogen in bcc Iron ISIJ International Advance Publication
  10. Fuel Ratio Optimization of Blast Furnace Based on Data Mining ISIJ International Vol.60(2020), No.11

Search Phrase Ranking

02 Dec. (Last 30 Days)

  1. blast furnace
  2. blast furnace permeability
  3. blast furnace productivity
  4. steel
  5. toshihiko emi
  6. toshihiro kitamura
  7. 0.16 carbon steel hot rolled steel
  8. bearing 52100 100cr6 rolling contact fatigue
  9. dwtt pressed notch
  10. fatigue crack path prediction in udimet 720 nickel-based alloy single crystals