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Tangential elastic contact model of the cylindrical contact with different axis crossing angles [PDF]

open access: yesScience Progress, 2022
In this paper, a cylinder contact model with different axis crossing angles is proposed, and the axis crossing angle is introduced into the normal and tangential constitutive equations.
Tieneng Guo   +3 more
doaj   +2 more sources

Two cosine wave elastic-plastic contact model [PDF]

open access: yesScience Progress, 2020
Based on Hertz elastic contact theory, the contact mechanics model of two cosine wave is established. The mechanical characteristics of the model in the elastic, elastic-plastic, and plastic stages were studied.
Tieneng Guo   +4 more
doaj   +2 more sources

Simplified DEM-Based Modelling and Simulation of the Track Ballast

open access: yesBuildings, 2023
This study proposes a rational method for modelling ballast in tracks based on the discrete element method (DEM) approach. To simulate a ballast consisting of a group of gravels, it is essential to use the discrete element method.
Youngwoong Kwon   +3 more
doaj   +1 more source

Numerical calculation and experimental study on friction and lubrication of Stirling engine piston ring [PDF]

open access: yesE3S Web of Conferences, 2021
To solve the practical problem of Stirling engine piston ring, numerical model on friction and lubrication were established based on average Reynolds equation theory.
Songjian Li   +3 more
doaj   +1 more source

Transient Responses of Repeated Transverse Impacts on Beams

open access: yesApplied Sciences, 2023
In this paper, the eigenfunction expansion method combined with local contact models are presented to analyze the repeated impact behaviors between the sphere and the beam.
Hui Wang   +3 more
doaj   +1 more source

Prediction of ground reaction forces and moments and joint kinematics and kinetics by inertial measurement units using 3D forward dynamics model

open access: yesJournal of Biomechanical Science and Engineering, 2023
Predicting the ground reaction force (GRF) and ground reaction moment (GRM) with a biomechanical model-based approach has an advantage for biomechanical gait analysis in situations where a statistical model cannot be used due to a lack of training data ...
Naoto HARAGUCHI, Kazunori HASE
doaj   +1 more source

Calibration of Model Parameters for Soda Saline Soil-Subsoiling Component Interaction Based on DEM

open access: yesApplied Sciences, 2023
To apply the discrete element method (DEM) to simulate the interaction process between soda saline–alkali soil and subsoiling component in Northeast China, establishing the soda saline–alkali soil particle model and selecting more accurate simulation ...
Min Liu   +6 more
doaj   +1 more source

Computational Control Strategy for Reducing Medial Compartment Load in Knee Bracing with Embedded Actuator

open access: yesActuators, 2023
Medial unloader braces represent a primary noninvasive approach for alleviating knee pain. However, conventional valgus unloader braces, while reducing load on the medial compartment, inadvertently increase load on the lateral compartment through ...
Mahdi Bamdad, Amirhosein Javanfar
doaj   +1 more source

Dynamic analysis of a parallel robot with spherical joints with consideration for joint clearance

open access: yesNihon Kikai Gakkai ronbunshu, 2022
This paper proposes a dynamic analysis method for evaluating the vibrational behavior of a parallel robot having spherical joints with clearance. By using variables that represent the relative displacement between the elements of clearance joints as ...
Masumi OHNO, Yukio TAKEDA
doaj   +1 more source

DEM Analysis of Track Ballast for Track Ballast–Wheel Interaction Simulation

open access: yesApplied Sciences, 2020
This study aims to suggest a rational analysis method for a track ballast–wheel interaction that could be further developed to model the interaction in a train-derailment event, based on the discrete-element method (DEM).
Nam-Hyoung Lim   +3 more
doaj   +1 more source

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