scholarly journals SLIP RESISTANCE TESTS OF FRICTION-TYPE HIGH-STRENGTH MULTI BOLTED JOINTS WITH UNCOATED CONTACT SURFACES ON THICK PLATE

2016 ◽  
Vol 72 (1) ◽  
pp. 166-175
Author(s):  
Jun MURAKOSHI ◽  
Daisaku ISHIHARA ◽  
Mamoru SAWADA ◽  
Takashi YAMAGUCHI
Keyword(s):  
Thick Plate ◽  
High Strength ◽  
Bolted Joints ◽  
Slip Resistance ◽  
Contact Surfaces ◽  
Resistance Tests

scholarly journals A STUDY ON SLIP DISPLACEMENT AT SLIP RESISTANCE TESTS OF HIGH STRENGTH BOLTED JOINTS

2019 ◽  
Vol 75 (2) ◽  
pp. 249-256
Author(s):  
Kuniaki MINAMI ◽  
Hiroshi TAMURA ◽  
Hiromi SHIRAHATA ◽  
Daisuke UCHIDA ◽  
Natsuki YOSHIOKA ◽  
...  
Keyword(s):  
High Strength ◽  
Bolted Joints ◽  
Slip Resistance ◽  
Slip Displacement ◽  
Resistance Tests

EXPERIMENTAL STUDY ON SLIP COEFFICIENT OF HIGH STRENGTH BOLTED JOINT WITH METAL SPRAYED CONTACT SURFACE

2015 ◽  
Vol 2 (1) ◽  
Author(s):  
Yusuke Nakanishi ◽  
Kunitaro Hashimoto ◽  
Yasuo Suzuki ◽  
Kunitomo Sugiura
Keyword(s):  
Steel Structures ◽  
High Strength ◽  
Treatment Method ◽  
Construction Cost ◽  
Bolted Joints ◽  
Maintenance Cost ◽  
Bolted Joint ◽  
Slip Coefficient ◽  
Surface Conditions ◽  
Contact Surfaces

There are several ways to reduce the number of bolts of frictional bolted joints from the viewpoint of the construction cost and the maintenance cost for steel structures. For example, there are the ways which are strengthening the material of bolts, or increasing the slip coefficient. This study is focused on the slip coefficient with metal thermal sprayed contact surfaces. The objective of this study is to investigate the effects of different surface conditions on the slip coefficient. Therefore, slip tests were conducted in consideration of 9 patterns of surface treatment method (3 kinds of thickness, 3 kinds of material of sprayed metal).

SLIPPING BEHAVIOR OF HIGH STRENGTH BOLTED JOINTS INCLUDING DIFFERENT CONTACT SURFACES

2020 ◽  
Vol 76 (2) ◽  
pp. 331-342
Author(s):  
Kohei TSUTSUI ◽  
Kuniaki MINAMI ◽  
Hideki YOKOYAMA ◽  
Takafumi AMANO ◽  
Hiroshi TAMURA
Keyword(s):  
High Strength ◽  
Bolted Joints ◽  
Contact Surfaces

scholarly journals A STUDY ON INITIAL BOLT PRETENSIONS OF HIGH STRENGTH BOLTED JOINTS CONSIDERING NUMBER OF CONTACT SURFACES

2019 ◽  
Vol 75 (1) ◽  
pp. 46-57
Author(s):  
Kuniaki MINAMI ◽  
Hiroshi TAMURA ◽  
Natsuki YOSHIOKA ◽  
Daisuke UCHIDA ◽  
Makoto MORO ◽  
...  
Keyword(s):  
High Strength ◽  
Bolted Joints ◽  
Contact Surfaces

scholarly journals Stress-strain connection analysis of bolted joints for thin-walled steel profiles working in tension and compression

2020 ◽  
Vol 164 ◽  
pp. 02007
Author(s):  
Evgeniy Ustimenko ◽  
Sergey Skachkov ◽  
Elena Vinogradova ◽  
Genrikh Muro
Keyword(s):  
Friction Force ◽  
High Strength ◽  
Bolted Joints ◽  
Strength Calculation ◽  
Stress Strain ◽  
Bolted Connection ◽  
Tension And Compression ◽  
Contact Surfaces ◽  
Thin Walled

The issues of designing structures from thin-walled profiles with nodal joints on bolts are considered, a method of strength calculation is developed. The calculation takes into account two variants of bolted joints on high-strength bolts and unregulated tightening connections, two variants of the operation of a shear-resistant connection with a “breakdown” when overcoming the force over the friction force of the contact surfaces and without a “breakdown”. The methodology includes the bolted connection splitting for the elements working in tension and compression.

The Applications of Vibratory Stress Relief in High-Strength Aluminum Alloy Thick Plate

2012 ◽  
Vol 430-432 ◽  
pp. 881-885
Author(s):  
Cai Jun Gan ◽  
Kai Liao
Keyword(s):  
Aluminum Alloy ◽  
Residual Stresses ◽  
Dimensional Stability ◽  
Strain Energy ◽  
Thick Plate ◽  
High Strength ◽  
Stress Relief ◽  
High Strength Aluminum Alloy ◽  
Mechanical Stretching ◽  
Stretching Process

The level and distribution of residual stresses have great impact on dimensional stability, while Vibratory Stress Relief (VSR) is an effective technology to relax or homogenize residual stresses. Experimental study on residual stresses distribution, residual strain energy and machining deformation of 7075 high-strength aluminum alloy thick plate under different aging process status shows that VSR can effectively decrease the amplitude and strain energy density, and enhance stability of dislocation structures and phase states in metal microscopic volume, then internal residual stresses are homogenized to enhance components’ anti-deformation capacity. In addition, the capability in maintaining dimensional stability from VSR is better than that from traditional mechanical stretching process

Closure to “Surface Treatment of High-Strength Bolted Joints”

1969 ◽  
Vol 95 (8) ◽  
pp. 1768-1769
Author(s):  
Conrad P. Heins ◽  
Charles T. G. Looney
Keyword(s):  
Surface Treatment ◽  
High Strength ◽  
Bolted Joints

Exploration of novel faying surface treatment for high-strength frictional bolted joints to enhance its after-slip performance

2021 ◽  
Author(s):  
Hitoshi Moriyama ◽  
Ryo Sakura ◽  
Takashi Yamaguchi ◽  
Takai Toshikazu ◽  
Yuta Yamamoto
Keyword(s):  
Surface Treatment ◽  
Load Transfer ◽  
High Strength ◽  
Bolted Joints ◽  
Deformation Capacity ◽  
Slip Coefficient ◽  
Faying Surface ◽  
Treatment Concepts ◽  
Local Slip

<p>Welded joints is adopted rather than bolted joints for megastructure’s connections because the former can carry large force. However, the former has several problems, such as quality control of welding in situ, which the latter can solve. By contrast, as the load transfer ratio of each bolt becomes uneven proportionally to the number of bolts, local slip around extreme bolts occurs before the whole slip. Extreme bolts to which a large shear force is applied will break before other bolts. For utilizing the strength of all bolts, the problem is solved by improving shear deformation capacity in faying surface with novel surface treatment. Here, the treatment concepts were explored, and the coating’s effectiveness was evaluated through friction tests. The deformation capacity can be twice or more than that of conventional treatment, and the slip coefficient doesn’t depend on contact pressure. These features have the advantage to give stable slip behaviour.</p>

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