Three-Dimensional Carbon Nanotube Sponge-Array Architectures with High Energy Dissipation

2013 ◽  
Vol 26 (8) ◽  
pp. 1248-1253 ◽  
Author(s):  
Xuchun Gui ◽  
Zhiping Zeng ◽  
Yuan Zhu ◽  
Hongbian Li ◽  
Zhiqiang Lin ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Energy Dissipation ◽  
Three Dimensional ◽  
High Energy ◽  
High Energy Dissipation

Carbon Nanotubes: Three-Dimensional Carbon Nanotube Sponge-Array Architectures with High Energy Dissipation (Adv. Mater. 8/2014)

2014 ◽  
Vol 26 (8) ◽  
pp. 1307-1307 ◽  
Author(s):  
Xuchun Gui ◽  
Zhiping Zeng ◽  
Yuan Zhu ◽  
Hongbian Li ◽  
Zhiqiang Lin ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Carbon Nanotube ◽  
Energy Dissipation ◽  
Three Dimensional ◽  
High Energy ◽  
High Energy Dissipation

High-Energy Dissipation Performance in Epoxy Coatings by the Synergistic Effect of Carbon Nanotube/Block Copolymer Conjugates

2016 ◽  
Vol 9 (1) ◽  
pp. 930-943 ◽  
Author(s):  
Hernan Garate ◽  
Micaela Bianchi ◽  
Lía I. Pietrasanta ◽  
Silvia Goyanes ◽  
Norma B. D’Accorso
Keyword(s):  
Carbon Nanotube ◽  
Energy Dissipation ◽  
Block Copolymer ◽  
Synergistic Effect ◽  
High Energy ◽  
Epoxy Coatings ◽  
High Energy Dissipation

Three-dimensional dynamic analysis of ancient buildings with novel high damping isolation trenches

2021 ◽  
pp. 107754632110109
Author(s):  
Jin-bao Li ◽  
Zhong-wei Hu ◽  
Zhao-dong Xu ◽  
Ying-qing Guo
Keyword(s):  
Energy Dissipation ◽  
Three Dimensional ◽  
High Energy ◽  
Plane Shape ◽  
Energy Dissipation Capacity ◽  
The Stability ◽  
High Energy Dissipation ◽  
Supporting Force ◽  
The Impact

To improve the efficiency of conventional isolation trench and lighten the impact of the excavation on neighbor buildings, a novel high damping isolation trench is proposed. The viscoelastic braces equipped in the high damping isolation trench can dissipate the energy of ground-borne vibration while providing supporting force to ensure the stability of the soil on both sides. According to two actual ancient buildings, two types of high damping isolation trenchs with the plane shape of U and L are designed to solve the potential damages caused by long-term train-induced vibration. First, three-dimensional finite/infinite models based on these two buildings are established, respectively. Then, the energy dissipation characteristics are obtained by experiments. Through calculation, the control effects of the high damping isolation trenchs for these two buildings are investigated. The results indicate that the viscoelastic braces possess high energy dissipation capacity. After setting the high damping isolation trenchs around the structures, even at a small excavation depth, the acceleration and velocity responses of the two buildings are reduced significantly. Furthermore, the selected U-shaped and L-shaped trenches also show superiority compared with the conventional linear-shaped trench in this project.

Test Study on the Rigidity Degradation and Energy Dissipation of High-Strength Reinforced Concrete Columns with Central Reinforcement

2010 ◽  
Vol 163-167 ◽  
pp. 398-405
Author(s):  
San Sheng Dong ◽  
Zi Xue Lei ◽  
Jun Hai Zhao
Keyword(s):  
Energy Dissipation ◽  
High Strength ◽  
Concrete Columns ◽  
High Energy ◽  
Affecting Factors ◽  
Static Test ◽  
Test Study ◽  
Core Areas ◽  
Energy Dissipation Capacity ◽  
High Energy Dissipation

Based on the pseudo-static test of 6 high-strength RC columns with central reinforcement skeletons, this paper studied their hysterisis performance, degradation of strength and rigidity, and energy dissipation capacity, with the affecting factors analyzed. The result shows that the central reinforcement skeletons can compensate for the low plasticity and brittle failure susceptibility of high-strength concrete so that all the specimens have stable strength, slow rigidity degradation and high energy dissipation capacity at later stage of loading; the larger the core areas the higher the strengths and ductility of the specimens, but slightly faster the degradation of strength and energy dissipation capacity as compared with the specimens with smaller core areas; the spacing of ties, longitudinal reinforcement ratio of core area both influence the strength degradation and energy dissipation capacity of the specimens, but they have little effect on their strengths.

Stiffness, Ductility, and Energy Dissipation of RC Elements under Cyclic Shear

2005 ◽  
Vol 21 (4) ◽  
pp. 1093-1112 ◽  
Author(s):  
Thomas T. C. Hsu ◽  
Mohamad Y. Mansour
Keyword(s):  
Energy Dissipation ◽  
High Energy ◽  
Shear Stresses ◽  
Principal Stresses ◽  
Element Analysis ◽  
Rc Structures ◽  
Cyclic Shear ◽  
Steel Bar ◽  
High Energy Dissipation ◽  
Reversed Cyclic

A new Cyclic Softened Membrane Model (CSMM) was recently developed to predict the stiffness, ductility, and energy dissipation of reinforced concrete (RC) elements subjected to reversed cyclic shear. Using the nonlinear finite element analysis, we can integrate these responses of elements to predict the behavior of a whole structure, such as a low-rise shear wall, subjected to earthquake action. This study of CSMM summarizes systematically the effects of the two primary variables: the steel bar angle with respect to the direction of the applied principal stresses and the steel percentage. The results clearly show that RC structures under cyclic shear stresses could be designed to be very ductile, have large stiffness, and possess high energy-dissipation capacities (just like flexural-dominated elements), if the steel bars are properly oriented in the directions of principal stresses and if the steel percentages are kept within certain limits.

scholarly journals Evaluation of Structural Behavior of Hysteretic Steel Dampers under Cyclic Loading

2020 ◽  
Vol 10 (22) ◽  
pp. 8264
Author(s):  
Sang-Woo Kim ◽  
Kil-Hee Kim
Keyword(s):  
Energy Dissipation ◽  
Shear Force ◽  
High Energy ◽  
Steel Plates ◽  
Structural Performance ◽  
Cyclic Shear ◽  
Energy Dissipation Capacity ◽  
Steel Damper ◽  
Ductile Behavior ◽  
High Energy Dissipation

This study proposes a relatively simple steel damper with high energy dissipation capacity. Three types of steel dampers were evaluated for structural performance. The first damper with U-shape had two vertical members and a semicircular connecting member for energy dissipation. The second damper with an angled U-shape replaced the connecting member with a horizontal steel member. The last damper with D-shape had a horizontal member added to the U-shaped damper. All the dampers were designed with steel plates on both sides that transmitted external shear force to the energy-dissipating members. To evaluate the structural performance of the dampers, an in-plane cyclic shear force was applied to the specimens. The D-shaped damper showed ductile behavior with excellent energy dissipation capacity after yielding without decreasing in strength during cyclic load. In other words, the D-shaped specimen showed excellent performance, with about 3.5 times the strength of the U-shaped specimen and about 3.8 times the energy dissipation capacity due to the additional horizontal member. Furthermore, the efficient energy dissipation of the proposed D-shaped steel damper was confirmed from the finite element (FE) analytical and experimental results.

A New Type of NES: Rotary Vibro-Impact

2017 ◽  
Author(s):  
Adnan S. Saeed ◽  
Mohammad A. AL-Shudeifat
Keyword(s):  
Energy Transfer ◽  
Energy Dissipation ◽  
Physical System ◽  
High Energy ◽  
Primary System ◽  
Targeted Energy Transfer ◽  
New Type ◽  
High Energy Dissipation ◽  
Nonlinear Energy ◽  
Promising Type

Rotating and vibro-impact Nonlinear Energy Sinks (NESs) have been employed for rapid and passive Targeted Energy Transfer (TET). Both have been proven to be efficient, shown high energy dissipation and have been tested experimentally. A novel type of NES that combines the two principles of nonlinear TET, rotating inertial coupling and vibro-impact, is numerically investigated on a 2 degree of freedom physical system. Two configurations of the new promising NES are considered via changing the location of the impacts. The optimized parameters of both configurations proved that high amounts of energy can be transferred from the primary system to the new promising type of NESs passively and rapidly.

Sign in / Sign up

Export Citation Format

Share Document