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Design of biped walking gait on biped robot
Springer Science and Business Media LLC - - Trang 303-306 - 2017
The purpose of this paper is design a stable walking gait for robot UXA-90. We applied Zero Moment Point (ZMP) based preview control to generate Center of Mass (CoM) trajectory. The ankle trajectories were created by spline interpolation method. Experiment results show that our method can make robot walking stable.
#ZMP #UXA-90 robot #walking gait
Fracture analysis employing equivalent domain integral method and nodal integration techniques based on reproducing kernel particle method
Springer Science and Business Media LLC - Tập 9 - Trang 1265-1278 - 2022
A novel technique to evaluate fracture mechanics parameters is investigated employing the equivalent domain integral (EDI) method and nodal integration (NI) techniques. Galerkin-based meshfree method is adopted. Reproducing kernel (RK) is chosen for the meshfree interpolant. Stabilized conforming nodal integration (SCNI) and sub-domain stabilized conforming integration (SSCI) are adopted for numer...... hiện toàn bộ
Ultrasensitive strain sensor enhanced by Bonded Light Emitting Diodes
Springer Science and Business Media LLC - - Trang 1-4 - 2021
Herein we report a strain sensor with SiC/Si heterostructure exhibiting performance enhanced toward ultra-sensitivity using a bonded pico-light-emitting-diode. First, a cantilever with SiC/Si heterostructure is fabricated, followed by bonding a pico-LED on the top of the cantilever. The lateral photovoltage and photocurrent, then, are investigated under different LED supply voltages. The lateral p...... hiện toàn bộ
#strain sensor #Light Emitting Diodes #piezoresistive effect
Improvements in highly viscous fluid simulation using a fully implicit SPH method
Springer Science and Business Media LLC - Tập 6 Số 4 - Trang 529-544 - 2019
Self-assembly of amphiphilic Janus spheres using the lattice Boltzmann method
Springer Science and Business Media LLC - Tập 9 - Trang 67-83 - 2021
We discuss the relevance of the lattice Boltzmann method (LBM) for soft matter alongside other simulation methods. We set up a popular problem of self-assembly of Janus spheres by combining native fluid and particle models in LBM with a simple amphiphilic pair potential. Thermal fluctuations and close contact corrections are also incorporated along with a novel periodic boundary condition for fini...... hiện toàn bộ
High compression of granular assemblies of brittle hollow tubular particles: investigation through a 3D discrete element model
Springer Science and Business Media LLC - Tập 9 - Trang 825-842 - 2022
This paper is devoted to the micro-mechanical origins of the high compressibility of brittle tubular particle assemblies. The material is extremely porous due to the presence of a large hole within the tube-shaped particle. The release of the inner void, protected by a fragile shell, gives the material a very strong ability to compress. The compressive response is investigated by means of the disc...... hiện toàn bộ
Calibrating microparameters of DEM models by using CEM, DE, EFO, MFO, SSO algorithms and the optimal hyperparameters
Springer Science and Business Media LLC - - Trang 1-14 - 2023
The Particle Flow Code is a typical DEM numerical software; however, the microparameters of DEM models need to be calibrated before numerical simulation. In most cases, the trial-and-error method is used; however, it takes a great deal of time and the results depend on the researchers’ experience. To address this issue, the cross-entropy method (CEM), differential evolution (DE), electromagnetic f...... hiện toàn bộ
Mechanical characteristics and crack evolution in specimens with double over-excavated cavities: experimental and numerical investigations
Springer Science and Business Media LLC - - Trang 1-20 - 2024
The mechanically over-excavated cavity along the borehole represents an innovative technology designed to enhance permeability in soft coal seams. This study aims to elucidate the complex mechanisms that influence the mechanical properties and crack evolution of over-excavated cavities. Uniaxial compression tests were performed on coal specimens with double over-excavated cavities, and the impact ...... hiện toàn bộ
Health Literacy among Older Adults: A Descriptive Cross-sectional Analysis in Vietnam
Springer Science and Business Media LLC - Tập 10 Số 2 - Trang 91-100 - 2025
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