Analysis on the mechanical performance of Dougong bracket sets under eccentric vertical load

2022 ◽  
Vol 314 ◽  
pp. 125652
Author(s):  
Chenwei Wu ◽  
Jianyang Xue ◽  
Dejun Song ◽  
Xuanwen Liang
Keyword(s):  
Mechanical Performance ◽  
Vertical Load

Comparative Experiment Research on Mechanical Performance between Sintered Hollow Block Infilled Insulation Masonry and Sintered Perforated Brick Masonry under Vertical and Horizontal Load

2013 ◽  
Vol 275-277 ◽  
pp. 1100-1106
Author(s):  
Zhi Ren Yuan ◽  
Li Jun Dou ◽  
Wang Tan
Keyword(s):  
Mechanical Performance ◽  
Masonry Structure ◽  
Brick Masonry ◽  
Horizontal Load ◽  
Vertical Load ◽  
Comparative Experiment ◽  
Experiment Research ◽  
Vertical Loading ◽  
Key Points ◽  
Hollow Block

This paper analyses the stress state of sintered hollow block infilled insulation masonry under practical conditions. Based on the fact that the static loading performance of the new masonry block can be used in masonry structure, the comparative experiment research focused on the seismic performance between masonry works made of the new block and traditional sintered perforated brick with horizontal and vertical load working simultaneously, damage regulars and corrective measures are key points. Results show the mechanical performance of the new block masonry is worse than sintered perforated brick masonry in fragility and vertical loading capability. To get the same mechanical performance, the new block masonry should be improved in rib width, rib number and distance, especially in restraint by construction columns and ring beams.

Strengthening of Thin Masonry Arches

2014 ◽  
Vol 624 ◽  
pp. 51-58 ◽  
Author(s):  
Antonio Borri ◽  
Giulio Castori ◽  
Marco Corradi
Keyword(s):  
Structural Unit ◽  
Mechanical Performance ◽  
Axial Stress ◽  
Axial Strain ◽  
Vertical Load ◽  
The Core ◽  
Number Of Layers ◽  
Reinforced Masonry ◽  
Masonry Vaults ◽  
Modern Technologies

The innovative technique here illustrated is the result of historical evolution of an ancient system of reinforcing tiled vaults belonging to the constructive Spanish tradition. Such a traditional technique consists in the lamination of flat rectangular tiles or thin bricks into thin vaults known as boveda tabicada. Since the use of modern technologies may improve the mechanical performance of the traditional materials, the core of the proposed strengthening system is based on the idea of combining the peculiar features of tabicada technique with the good tensile properties of composite materials. More in detail, it is possible to obtain reinforced masonry vaults or arches by overlapping different layers of tiles or thin bricks and laminates, embedded within an hydraulic mortar, so that the entire assembly may act as a single structural unit. Eighteen prototypes of tiled arches were tested under a monotonic vertical load applied at the keystone. The influence of the types of reinforcement, number of layers and properties of hydraulic mortar has been investigated. Laboratory outcomes are presented and discussed in the paper considering mechanical behavior of specimens and axial stress-axial strain relationships.

The Mechanical Performance of Carbon Fibres- Addressing the Role of Microstructure

2019 ◽  
Author(s):  
Peter Peter ◽  
Claudia Creighton ◽  
David Fox ◽  
Pablo Mota Santiago ◽  
Adrian Hawley ◽  
...  
Keyword(s):  
Mechanical Performance ◽  
Carbon Fibres

Microstructural and Mechanical Behaviour Evaluation of Mg-Al-Zn Alloy Friction Stir Welded Joint

2020 ◽  
Vol 17 (3) ◽  
pp. 8150-8159
Author(s):  
Kulwant Singh ◽  
Gurbhinder Singh ◽  
Harmeet Singh
Keyword(s):  
Heat Treatment ◽  
Friction Stir Welding ◽  
Magnesium Alloys ◽  
Mechanical Performance ◽  
Fuel Efficiency ◽  
Research Work ◽  
Grain Structure ◽  
Tensile Fracture ◽  
Friction Stir ◽  
The Impact

The weight reduction concept is most effective to reduce the emissions of greenhouse gases from vehicles, which also improves fuel efficiency. Amongst lightweight materials, magnesium alloys are attractive to the automotive sector as a structural material. Welding feasibility of magnesium alloys acts as an influential role in its usage for lightweight prospects. Friction stir welding (FSW) is an appropriate technique as compared to other welding techniques to join magnesium alloys. Field of friction stir welding is emerging in the current scenario. The friction stir welding technique has been selected to weld AZ91 magnesium alloys in the current research work. The microstructure and mechanical characteristics of the produced FSW butt joints have been investigated. Further, the influence of post welding heat treatment (at 260 °C for 1 h) on these properties has also been examined. Post welding heat treatment (PWHT) resulted in the improvement of the grain structure of weld zones which affected the mechanical performance of the joints. After heat treatment, the tensile strength and elongation of the joint increased by 12.6 % and 31.9 % respectively. It is proven that after PWHT, the microhardness of the stir zone reduced and a comparatively smoothened microhardness profile of the FSW joint obtained. No considerable variation in the location of the tensile fracture was witnessed after PWHT. The results show that the impact toughness of the weld joints further decreases after post welding heat treatment.

NUMERICAL STUDY ON THE MECHANICAL PERFORMANCE OF GRAPHENE BRIDGES ON SILLICON THIN FILM TRANSISTORS

2011 ◽  
Author(s):  
Byung-Jae Kim ◽  
Hyeon-Seok Seo ◽  
Won-Ho Lee ◽  
Jong-Hyun Ahn ◽  
Youn-Jea Kim
Keyword(s):  
Thin Film ◽  
Thin Film Transistors ◽  
Mechanical Performance ◽  
Numerical Study

Effect of tolbutamide on myocardial metabolism and mechanical performance of the diabetic rat

Diabetes ◽  
1984 ◽  
Vol 33 (12) ◽  
pp. 1138-1143 ◽  
Author(s):  
B. H. Tan ◽  
G. L. Wilson ◽  
S. W. Schaffer
Keyword(s):  
Myocardial Metabolism ◽  
Mechanical Performance ◽  
Diabetic Rat

Dynamic Damping and Stiffness Characteristics of the Rolling Tire

2001 ◽  
Vol 29 (4) ◽  
pp. 258-268 ◽  
Author(s):  
G. Jianmin ◽  
R. Gall ◽  
W. Zuomin
Keyword(s):  
Dynamic Behavior ◽  
Variable Parameter ◽  
Low Frequency ◽  
Vertical Load ◽  
Frequency Range ◽  
Inflation Pressure ◽  
Vehicle Simulation ◽  
Dynamic Damping ◽  
Speed Range ◽  
Stiffness Characteristics

Abstract A variable parameter model to study dynamic tire responses is presented. A modified device to measure terrain roughness is used to measure dynamic damping and stiffness characteristics of rolling tires. The device was used to examine the dynamic behavior of a tire in the speed range from 0 to 10 km/h. The inflation pressure during the tests was adjusted to 160, 240, and 320 kPa. The vertical load was 5.2 kN. The results indicate that the damping and stiffness decrease with velocity. Regression formulas for the non-linear experimental damping and stiffness are obtained. These results can be used as input parameters for vehicle simulation to evaluate the vehicle's driving and comfort performance in the medium-low frequency range (0–100 Hz). This way it can be important for tire design and the forecasting of the dynamic behavior of tires.

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