Hydrodynamic Ram Test of Composite T-Joint Structure

2021 ◽  
Author(s):  
Jong Heon Kim ◽  
Bohwi Seo
Keyword(s):  
Joint Structure ◽  
Hydrodynamic Ram

Representation of bolted joints in a structure using finite element modelling and model updating

2020 ◽  
Vol 14 (3) ◽  
pp. 7141-7151 ◽  
Author(s):  
R. Omar ◽  
M. N. Abdul Rani ◽  
M. A. Yunus
Keyword(s):  
Finite Element ◽  
Dynamic Behaviour ◽  
Model Updating ◽  
Complex Structure ◽  
Bolted Joints ◽  
Model Parameters ◽  
Fe Model ◽  
Bolted Joint ◽  
Fe Modelling ◽  
Joint Structure

Efficient and accurate finite element (FE) modelling of bolted joints is essential for increasing confidence in the investigation of structural vibrations. However, modelling of bolted joints for the investigation is often found to be very challenging. This paper proposes an appropriate FE representation of bolted joints for the prediction of the dynamic behaviour of a bolted joint structure. Two different FE models of the bolted joint structure with two different FE element connectors, which are CBEAM and CBUSH, representing the bolted joints are developed. Modal updating is used to correlate the two FE models with the experimental model. The dynamic behaviour of the two FE models is compared with experimental modal analysis to evaluate and determine the most appropriate FE model of the bolted joint structure. The comparison reveals that the CBUSH element connectors based FE model has a greater capability in representing the bolted joints with 86 percent accuracy and greater efficiency in updating the model parameters. The proposed modelling technique will be useful in the modelling of a complex structure with a large number of bolted joints.

DEFORMATION AND CRACKING OF THE PLATFORM JOINT OF THE PREFABRICATED-MONOLITHICRC BUILDING FRAME

2020 ◽  
Vol 90 (4) ◽  
pp. 38-47
Author(s):  
VL.I. KOLCHUNOV ◽  
◽  
D.V. MARTYNENKO ◽  
Keyword(s):  
Reinforced Concrete ◽  
Plane Stress State ◽  
Hollow Core ◽  
Finite Element Scheme ◽  
Element Scheme ◽  
Joint Structure ◽  
Numerical Studies ◽  
Distributed Load ◽  
Different Types ◽  
Design Characteristics

A computational model and the results of numerical studies of the structure of a platform joint in a reinforced concrete precast-monolithic frame of a building from panel-frame elements of industrial production are presented. Modeling of the plane stress state of the joint structure is carried out by a finite element scheme, using finite elements of different types and a nonlinear law of deformation to determine the design characteristics of reinforced concrete. The parameters of deformation of the platform joint structure at different loading levels, including stage-by-stage cracking and destruction, have been determined. The schemes of distribution and stress concentration zones in the characteristic sections of the platform joint are established when the distributed load is transferred from the frame of the panel-frame to the hollow-core floor panels and concrete for embedding the joint in the presence of a cavity in the frame frame for centering elements.

scholarly journals Spacer for Double Bundle in Phase Conductor of Transmission Line Based on Cross Universal Joint Structure

2021 ◽  
Vol 687 (1) ◽  
pp. 012117
Author(s):  
Ma Jun ◽  
Shi Yonggang ◽  
Dong Gang ◽  
Gong Fuxing ◽  
Wang Zhu ◽  
...  
Keyword(s):  
Transmission Line ◽  
Double Bundle ◽  
Universal Joint ◽  
Joint Structure

scholarly journals Joint structure for the real-time estimation and control of automotive dry clutch engagement

2018 ◽  
Vol 51 (15) ◽  
pp. 1062-1067 ◽  
Author(s):  
Mojtaba Sharifzadeh ◽  
Mario Pisaturo ◽  
Arash Farnam ◽  
Adolfo Senatore
Keyword(s):  
Real Time ◽  
Time Estimation ◽  
The Real ◽  
Joint Structure ◽  
Clutch Engagement ◽  
Real Time Estimation ◽  
Dry Clutch ◽  
Estimation And Control ◽  
And Control

scholarly journals Experimental study on the cavity evolution and liquid spurt of hydrodynamic ram

2021 ◽  
Author(s):  
An-ran Chen ◽  
Xiang-dong Li ◽  
Lan-wei Zhou ◽  
Yang-zi-yi Ji
Keyword(s):  
Experimental Study ◽  
Hydrodynamic Ram ◽  
Cavity Evolution

Formation and Structure of Work Material in the Friction Stir Forming Process

2015 ◽  
Vol 137 (5) ◽  
Author(s):  
Sladjan Lazarevic ◽  
Kenneth A. Ogata ◽  
Scott F. Miller ◽  
Grant H. Kruger ◽  
Blair E. Carlson
Keyword(s):  
Steel Sheet ◽  
Dissimilar Materials ◽  
Mechanical Interlocking ◽  
Forming Process ◽  
Friction Stir ◽  
Joint Structure ◽  
Work Material ◽  
Formation Zone ◽  
Significant Process ◽  
Geometrical Effects

Friction stir forming (FSF) is a new environmentally friendly manufacturing process for lap joining of dissimilar materials. Fundamentally, this process is based on frictionally heating and mechanically stirring work material of the top piece in a plasticized state to form a mechanical interlocking joint within the bottom material. In this research, the significant process parameters were identified and optimized for Al 6014 alloy and mild steel using a design of experiments (DOE) methodology. The overall joint structure and grain microstructure were mapped as the FSF process progressed and the aluminum work material deformed through different stages. It was found that the work material within the joint exhibited two layers, thermomechanical affected zone, which formed due to the contact pressure and angular momentum of the tool, and heat affected formation zone, which was composed of work material formed through the hole in the steel sheet and into the anvil cavity. Two different geometries of anvil design were employed to investigate geometrical effects during FSF of the aluminum. It was found that the direction and amount of work material deformation under the tool varies from the center to the shoulder.

scholarly journals THE PROPOSAL OF A DESIGN METHOD OF THE JOINT STRUCTURE FOR THE STEEL / CONCRETE TRUSS BRIDGE

2006 ◽  
Vol 62 (2) ◽  
pp. 349-366 ◽  
Author(s):  
Kosuke FURUICHI ◽  
Yoshihiro HISHIKI ◽  
Kentaro YOSHIDA ◽  
Tomoaki HONDA ◽  
Masato YAMAMURA ◽  
...  
Keyword(s):  
Design Method ◽  
Joint Structure ◽  
Truss Bridge

Morphological patterns of the hip joint structure in students of choreography schools and young athletes involved in sports associated with the art of movement

2020 ◽  
Vol 15 (6) ◽  
pp. 90-93
Author(s):  
O.S. Vasiliev ◽  
◽  
S.P. Levushkin ◽  
E.E. Achkasov ◽  
◽  
...  
Keyword(s):  
Hip Joint ◽  
Young Athletes ◽  
Hip Joints ◽  
Joint Structure ◽  
Normal Limits ◽  
Rhythmic Gymnastics ◽  
Key Words Hip ◽  
Coxa Valga ◽  
Key Words Hip Dysplasia ◽  
Morphological Patterns

Students of choreography schools and young athletes involved in sports associated with the art of movement usually have dysplastic hip joints with normal acetabular coverage and femoral Coxa valga, whose normal limits require further discussion. We have identified 5 X-Ray morphological patterns of the hip joint structure typical of such individuals, and analyzed their association with professional qualities. Key words: hip dysplasia, dysplastic constitution, Coxa valga, young athletes, rhythmic gymnastics, choreography, ballet

The development of the Kitasato thumb splint as a conservative therapy treatment for patients with thumb carpometacarpal (CMC) arthropathy

Impact ◽  
2021 ◽  
Vol 2021 (8) ◽  
pp. 64-66
Author(s):  
Shuichi Sasaki
Keyword(s):  
Quantitative Analysis ◽  
Low Temperature ◽  
Daily Living ◽  
Conservative Therapy ◽  
University Hospital ◽  
Joint Structure ◽  
Thumb Carpometacarpal ◽  
Additional Support ◽  
Cmc Joint ◽  
Therapy Treatment

Orthoses are devices that are applied externally to help in the rehabilitation of specific bones or joints. Dr Shuichi Sasaki, Department of Rehabilitation, Kitasato University Hospital, Japan, and his team is working to develop a new orthosis for repatriating thumb arthropathies called the Kitasato thumb splint. It is designed to improve usability of the thumb joint, especially in cases of thumb carpometacarpal (CMC) arthropathy, by taking into consideration the thumb CMC joint structure. It exerts force at the base of the CMC joint to move the thumb into the correct joint alignment, improving symptoms for patients. With the Kitasato thumb splint, Sasaki and the team are also eager to provide patients with an alternative to surgery as they believe that the use of more conservative measures with orthoses can prove effective and also prevent costly surgery. The Kitasato thumb splint is made of a low-temperature thermoplastic knit material and can be assembled in as little as 10 minutes, quickly and conveniently providing patients with additional support during painful daily tasks. In his work, Sasaki and the team are looking at orthoses used to treat thumb CMC osteoarthritis and analysing the pressure on CMC joints using quantitative analysis. So far, the Kitasato thumb splint has been found to help in pain reduction and improvements in the activities of daily living in patients with mild cases (Eaton Classifications I to II) of thumb CMC joints and to also provide some improvement in severe cases (Eaton Classifications III-IV).

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