A5100407519- Cellular and Composite Structures
- Acoustic Wave Phenomena Research
- Polymer composites and self-healing
- Advanced Materials and Mechanics
- Structural Analysis and Optimization
- Shape Memory Alloy Transformations
- Noise Effects and Management
- Composite Structure Analysis and Optimization
- High Entropy Alloys Studies
- Magnetic and transport properties of perovskites and related materials
- Fluid Dynamics Simulations and Interactions
- Automotive and Human Injury Biomechanics
- Magnetic Properties and Applications
- Vibration and Dynamic Analysis
- Railway Engineering and Dynamics
- Mechanical Behavior of Composites
- Structural Response to Dynamic Loads
- Structural Load-Bearing Analysis
- Advanced Antenna and Metasurface Technologies
- Advanced Sensor and Energy Harvesting Materials
- Magnetic Bearings and Levitation Dynamics
- Ultrasonics and Acoustic Wave Propagation
- Metallurgy and Material Forming
- Piezoelectric Actuators and Control
- Heusler alloys: electronic and magnetic properties
Northeastern University
2016-2025
Northeastern University
2025
Southwest Petroleum University
2024
Universidad del Noreste
2008-2023
Huawei Technologies (China)
2023
Qingdao University of Science and Technology
2023
The First People's Hospital of Changde
2021
Nanjing University
2021
China Academy of Space Technology
2020
Zhejiang University of Technology
2019
Abstract Energy dissipation metamaterials based on frictional energy have attracted much attention due to their reusable properties. The innovation of this paper is propose a compression torsion coupling (CTC) metamaterial that can dissipate in the elastic stage by introducing mechanism into CTC metamaterial. proposed structure was composed rotating spring structures with Z-shaped ribs. 3D printing technology used make specimens for loading and unloading experiments. mechanical properties...
Two-dimensional hierarchical re-entrant honeycomb structures were designed and the mechanical behaviors of studied using a finite element method. Hierarchical structure order n (n ≥ 1) was constructed by replacing each vertex lower − with smaller hexagon identical strut aspect ratio. The Poisson's ratio energy absorption capacity different orders under compression velocities. results showed that first second can reach −1.36 −1.33 appropriate ratio, 13.8% 12.1% than zeroth structure. three...
In this paper, a novel three-dimensional (3D) unit cell structure with butterfly-like perforations was designed, and negative Poisson's ratio tunable stiffness were achieved in such geometry. The strain-stress relationship of structures different geometric parameters determined using the finite element method (FEM). Samples identical variables to those models fabricated via 3D printing technique, their ratios stress–strain relationships experimentally compared FEM results. Results showed...
Abstract Because of their desirable properties, mechanical metamaterials have drawn increasing attention. Negative stiffness (NS) can be used as reusable energy dissipation devices, but they usually low bearing capacity. In this study, a self-recoverable NS structure with enhanced and capacity was proposed. It breaks free from the size limitations curved beams or thin rods, high through mutual extrusion friction between snap plug layered groove. The properties proposed were studied by finite...
Abstract In this paper, a new chiral spiral structure based on the cochlear is proposed. The consists of four orthogonally oriented structures with same geometric parameters connected at inner endpoints structures. Based Bloch’s theory and finite element method, band gap characteristics proposed are studied. effects ligament bending angle ( θ ), ratio arc radius contour α thickness t c level n ) discussed. results show that two-level = 2) has best when 180° 0.45. With decrease increase ,...
Based on the Kirchhoff–Karman nonlinear theory, postbuckling bearing capacity (PBC) of perforated plates under shearing load was studied and compared using a self-developed quasi-conforming element program with singular point identification switching approach. The influences geometric parameters PBC were analyzed. During calculation, edge beams introduced to simulate effects boundary PBC. manufactured tested verify accuracy numerical results. results show that influence in-plane constraints...
Abstract Based on a modified Voronoi tessellation technique, series of isotropic negative Poisson’s ratio (NPR) foam models were proposed via finite element method (FEM). And the prepared by reverse modeling method. and stress–strain relationship studied FEM experimental Results showed that structure exhibited NPR behavior. With increased relative density model, absolute value decreased gradually. The results experiment good consistency. Then, foam-filled was built filling into square tube....
The Poisson's ratios of re‐entrant Cu foams with different initial relative densities were studied by resonant ultrasound spectroscopy (RUS). Slight anisotropy in foam was detected RUS and removed a small unidirectional compression. transformation into the accomplished applying sequence permanent triaxial compression deformations. ratio first decreases then increases increasing strain. A minimum approximately −0.7 for all achieved an appropriate strain, compared −0.6 at similar density...
The modified MWCNT covalently bound with polymers avoids aggregation and reinforces the mechanical performance of composite.