Energy absorption analysis of STF/Kevlar composite fabric based on 3D morphology of impact basin under low-speed impact

2021 ◽  
pp. 115152
Author(s):  
Yu Ma ◽  
Zhenkun Lei ◽  
Guangyan Huang ◽  
Ruixiang Bai ◽  
Yaojie Xu ◽  
...  
Keyword(s):  
Energy Absorption ◽  
Absorption Analysis ◽  
Low Speed ◽  
3D Morphology

Long fibre-reinforced thermoplastic theoretical model for energy absorption analysis based on impact performance

2020 ◽  
pp. 1-10
Author(s):  
Junyuan Zhang ◽  
Zhongyu Li ◽  
Qiushi Zhang ◽  
Zhe Jiang
Keyword(s):  
Theoretical Model ◽  
Energy Absorption ◽  
Absorption Analysis ◽  
Impact Performance

scholarly journals Energy Absorption Characteristics of PVC Coarse Aggregate Concrete under Impact Load

2021 ◽  
Vol 15 (1) ◽  
Author(s):  
Shi Hu ◽  
Huaming Tang ◽  
Shenyao Han
Keyword(s):  
Compressive Strength ◽  
Energy Absorption ◽  
High Speed ◽  
Coarse Aggregate ◽  
Specific Energy Absorption ◽  
Low Speed ◽  
High Speed Impact ◽  
Aggregate Content ◽  
Dynamic Compressive Strength ◽  
Absorption Characteristics

AbstractIn this paper, polyvinyl chloride (PVC) coarse aggregate with different mixing contents is used to solve the problems of plastic pollution, low energy absorption capacity and poor damage integrity, which provides an important reference for PVC plastic concrete used in the initial support structures of highway tunnels and coal mine roadway. At the same time, the energy absorption characteristics and their relationship under different impact loads are studied, which provides an important reference for predicting the energy absorption characteristics of concrete under other PVC aggregate content or higher impact speed. This study replaced natural coarse aggregate in concrete with different contents and equal volume of well-graded flaky PVC particles obtained by crushing PVC soft board. Also, slump, compression, and splitting strength tests, a free falling low-speed impact test of steel balls and a high-speed impact compression test of split Hopkinson pressure bar (SHPB) were carried out. Results demonstrate that the static and dynamic compressive strength decreases substantially, and the elastic modulus and slump decrease slowly with the increase of the mixing amount of PVC aggregate (0–30%). However, the energy absorption rate under low-speed impact and the specific energy absorption per MPa under high-speed impact increase obviously, indicating that the energy absorption capacity is significantly enhanced. Regardless of the mixing amount of PVC aggregate, greater strain rate can significantly enhance the dynamic compressive strength and the specific energy absorption per MPa. After the uniaxial compression test or the SHPB impact test, the relative integrity of the specimen is positively correlated with the mixing amount of PVC aggregate. In addition, the specimens are seriously damaged with the increase of the impact strain rate. When the PVC aggregate content is 20%, the compressive strength and splitting strength of concrete are 33.8 MPa and 3.26 MPa, respectively, the slump is 165 mm, the energy absorption rate under low-speed impact is 89.5%, the dynamic compressive strength under 0.65 Mpa impact air pressure is 58.77 mpa, and the specific energy absorption value per MPa is 13.33, which meets the requirements of shotcrete used in tunnel, roadway support and other impact loads. There is a linear relationship between the energy absorption characteristics under low-speed impact and high-speed impact. The greater the impact pressure, the larger the slope of the fitting straight line. The slope and intercept of the fitting line also show a good linear relationship with the increase of impact pressure. The conclusions can be used to predict the energy absorption characteristics under different PVC aggregate content or higher-speed impact pressure, which can provide important reference for safer, more economical, and environmental protection engineering structure design.

BLOCK-BAR DEVICE FOR ENERGY ABSORPTION ANALYSIS

2001 ◽  
Vol 15 (3) ◽  
pp. 603-617 ◽  
Author(s):  
E. JACQUELIN ◽  
P. HAMELIN
Keyword(s):  
Energy Absorption ◽  
Absorption Analysis

An optical and energy absorption analysis of the solar compound parabolic collector photoreactor (CPCP): The impact of the radiation distribution on its optimization

2020 ◽  
Vol 395 ◽  
pp. 125065
Author(s):  
Raúl Acosta-Herazo ◽  
Patricio J. Valadés-Pelayo ◽  
Miguel A. Mueses ◽  
María H. Pinzón-Cárdenas ◽  
Camilo Arancibia-Bulnes ◽  
...  
Keyword(s):  
Energy Absorption ◽  
Absorption Analysis ◽  
Radiation Distribution ◽  
Parabolic Collector ◽  
The Impact

Impact Energy Absorption Analysis of Spark Plasma Sintered Al2O3Reinforced Bulk Multiwalled Carbon Nanotube Compacts Using Nanoindentation

2016 ◽  
Vol 13 (6) ◽  
pp. 987-996 ◽  
Author(s):  
Ajitesh Kar ◽  
Soumya Sarkar ◽  
Probal Das ◽  
Manjima Bhattacharya ◽  
Anoop Mukhopadhyay
Keyword(s):  
Carbon Nanotube ◽  
Energy Absorption ◽  
Impact Energy ◽  
Multiwalled Carbon Nanotube ◽  
Absorption Analysis ◽  
Multiwalled Carbon ◽  
Spark Plasma

Energy Absorption Analysis and Optimization Design of Local Surface Nanocrystallization Rectangular Tubes

2020 ◽  
Vol 975 ◽  
pp. 109-114
Author(s):  
Zhen Zhao ◽  
Wei Wang ◽  
Ying Li Chen ◽  
Zhen Huan Zhou ◽  
C.W. Lim ◽  
...  
Keyword(s):  
Energy Absorption ◽  
Optimization Design ◽  
Absorption Analysis ◽  
Local Surface ◽  
Buckling Modes ◽  
Surface Nanocrystallization ◽  
Rectangular Tube ◽  
Buckling Stability ◽  
Absorption Performance ◽  
Rectangular Tubes

A novel rectangular tube with circumferential anti-symmetric local self-surface nanocrystallization (CALSSN) layouts is designed for energy absorption. The effects of stripe numbers on the energy absorption performance is investigated. Results reveal that the 8-stripe CALSSN model exhibits the best buckling modes, which is more regular and stable than the untreated ones. It is also found that the stripe numbers highly depend on the structural sizes, unsuitable stripes number may reduce the buckling stability and periodicity. Besides, five CALSSN models with stripe numbers from 6 to 10 are selected to find the optimized size which has the highest specific energy absorption (SEA). A new 7-stripe CALSSN model which has optimal buckling modes and energy absorption performance is achieved.

Energy absorption analysis of novel double section triangular tubes subjected to axial impact loading

2021 ◽  
Author(s):  
A. Praveen Kumar ◽  
M. Yadi Reddy ◽  
M. Shunmugasundaram
Keyword(s):  
Energy Absorption ◽  
Impact Loading ◽  
Absorption Analysis ◽  
Axial Impact

Mechanical Energy Absorption Characteristics of Hollow and Water-Filled Carbon Nanotubes upon Low-Speed Crushing

2012 ◽  
Vol 2 (4) ◽  
pp. 65-70 ◽  
Author(s):  
Jun Xu ◽  
Baoxing Xu ◽  
Yueting Sun ◽  
Yibing Li ◽  
Xi Chen
Keyword(s):  
Carbon Nanotubes ◽  
Energy Absorption ◽  
Mechanical Energy ◽  
Low Speed ◽  
Absorption Characteristics
Sign in / Sign up

Export Citation Format

Share Document