Real-Time Simulation Analysis of a Floating Dock Based on a Finite Element Model

The primary goal of this paper is to provide force feedback to the user using vision-based techniques. The approach presented in this paper can be used to provide force feedback to the surgeon for robot-assisted procedures. As proof of concept, we have developed a linear elastic finite element model (FEM) of a rubber membrane whereby the nodal displacements of the membrane points are measured using vision. These nodal displacements are the input into our finite element model. In the first experiment, we track the deformation of the membrane in real-time through stereovision and compare it with the actual deformation computed through forward kinematics of the robot arm. On the basis of accurate deformation estimation through vision, we test the physical model of a membrane developed through finite element techniques. The FEM model accurately reflects the interaction forces on the user console when the interaction forces of the robot arm with the membrane are compared with those experienced by the surgeon on the console through the force feedback device. In the second experiment, the PHANToM haptic interface device is used to control the Mitsubishi PA-10 robot arm and interact with the membrane in real-time. Image data obtained through vision of the deformation of the membrane is used as the displacement input for the FEM model to compute the local interaction forces which are then displayed on the user console for providing force feedback and hence closing the loop.

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Analysis of stress intensity factor for fatigue crack using bootstrap S-version finite element model

International Journal of Structural Integrity ◽

10.1108/ijsi-10-2019-0108 ◽

2020 ◽

Vol 11 (4) ◽

pp. 579-589

Author(s):

Muhamad Husnain Mohd Noh ◽

Mohd Akramin Mohd Romlay ◽

Chuan Zun Liang ◽

Mohd Shamil Shaari ◽

Akiyuki Takahashi

Keyword(s):

Stress Intensity Factor ◽

Finite Element ◽

Finite Element Model ◽

Simulation Analysis ◽

Element Model ◽

Bootstrap Resampling ◽

Confidence Bounds ◽

Content Type ◽

Resampling Method ◽

The Mean

PurposeFailure of the materials occurs once the stress intensity factor (SIF) overtakes the material fracture toughness. At this level, the crack will grow rapidly resulting in unstable crack growth until a complete fracture happens. The SIF calculation of the materials can be conducted by experimental, theoretical and numerical techniques. Prediction of SIF is crucial to ensure safety life from the material failure. The aim of the simulation study is to evaluate the accuracy of SIF prediction using finite element analysis.Design/methodology/approachThe bootstrap resampling method is employed in S-version finite element model (S-FEM) to generate the random variables in this simulation analysis. The SIF analysis studies are promoted by bootstrap S-version Finite Element Model (BootstrapS-FEM). Virtual crack closure-integral method (VCCM) is an important concept to compute the energy release rate and SIF. The semielliptical crack shape is applied with different crack shape aspect ratio in this simulation analysis. The BootstrapS-FEM produces the prediction of SIFs for tension model.FindingsThe mean of BootstrapS-FEM is calculated from 100 samples by the resampling method. The bounds are computed based on the lower and upper bounds of the hundred samples of BootstrapS-FEM. The prediction of SIFs is validated with Newman–Raju solution and deterministic S-FEM within 95 percent confidence bounds. All possible values of SIF estimation by BootstrapS-FEM are plotted in a graph. The mean of the BootstrapS-FEM is referred to as point estimation. The Newman–Raju solution and deterministic S-FEM values are within the 95 percent confidence bounds. Thus, the BootstrapS-FEM is considered valid for the prediction with less than 6 percent of percentage error.Originality/valueThe bootstrap resampling method is employed in S-FEM to generate the random variables in this simulation analysis.

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Simulation Analysis of Isolation about Spray Boom

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.900.742 ◽

2014 ◽

Vol 900 ◽

pp. 742-745 ◽

Cited By ~ 1

Author(s):

Yao Jie He ◽

Bai Jing Qiu ◽

Ya Fei Yang

Keyword(s):

Finite Element ◽

Finite Element Model ◽

Modal Analysis ◽

Simulation Analysis ◽

Element Model ◽

The Finite Element Model

In order to attenuate the deformation of spray boom, a finite element model built based on ANSYS, according to the reasults of numerical modal analysis and modal texting, the reliability of the finite element model was affirmed. Then, an isolator was introduced between spray boom and frame, a frame-isolator-spray boom model was built in ADAMS. The effect of the isolators which have different parameters was research, the reasult shows: The isolator has much effect on attenuating spray booms deformation, the stiffness of isolators spring dampers has little effect on spray booms deformation, but the damping of isolators spring dampers has effect on spray booms deformation.

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Methods for Reducing a Thermal Finite Element Model Including the Advection Network Contribution

Volume 3: Heat Transfer, Parts A and B ◽

10.1115/gt2006-90676 ◽

2006 ◽

Author(s):

Daniele Botto ◽

Stefano Zucca ◽

Muzio M. Gola

Keyword(s):

Finite Element ◽

Finite Element Model ◽

Real Time ◽

Residual Life ◽

Mathematical Formulation ◽

Time Integration ◽

Element Model ◽

Computational Time ◽

Fatigue Damage Accumulation ◽

Secondary Air

The life monitoring concept needs on-line calculation to evaluate stresses and temperatures on aircraft engine components, in order to asses fatigue damage accumulation and residual life. Due to the amount of computational time required it is not possible for a full finite element model to operate in real time using the on-board CPU. Stresses and temperatures are then evaluated by using simplified algorithms. In the present work Guyan reduction and component mode synthesis have been applied to a thermal finite element model, including the cooling stream flow — the so called advection network — in order to reduce the size of the solving equation system. The appropriate mathematical formulation for the advection network reduction has been developed. Two reduction methods have been performed, discussed and subsequently applied to a thermal finite element model of a real low pressure turbine disk. The reduced system includes both the disk and the correlated fluid network model, simulating turbine secondary air system. The finite element model is axi-symmetric, with constant convective coefficients. Results of time integration for the reduced and the complete models have been compared. Results show that the proposed techniques gives models with a reduced number of degrees of freedom and at the same time good accuracy in temperature calculation. The reduced models are then suitable for real time computation.

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Face-based smoothed finite element method for real-time simulation of soft tissue

10.1117/12.2255064 ◽

2017 ◽

Cited By ~ 1

Author(s):

Andrea Mendizabal ◽

Rémi Bessard Duparc ◽

Huu Phuoc Bui ◽

Christoph J. Paulus ◽

Igor Peterlik ◽

...

Keyword(s):

Finite Element Method ◽

Finite Element ◽

Soft Tissue ◽

Real Time ◽

Real Time Simulation ◽

Time Simulation ◽

Smoothed Finite Element Method ◽

Element Method

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The Contact Simulation of CTP Imaging Drum and Plate on ANSYS

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.151.484 ◽

2012 ◽

Vol 151 ◽

pp. 484-489 ◽

Cited By ~ 1

Author(s):

Jie Fang Xing ◽

Jie Zhang ◽

Lu Jun He

Keyword(s):

Numerical Simulation ◽

Finite Element ◽

Finite Element Model ◽

Optimization Design ◽

Simulation Analysis ◽

Element Model ◽

Basic Knowledge ◽

Dynamic Design ◽

Design And Optimization ◽

Finite Element Software

Introduce some basic knowledge, methods and theory of using the finite element software ANSYS to carry out contact analysis, and then establish the contact simulation analysis finite element model for CTP imaging drum and plate by using the software ANSYS. A numerical simulation analysis on the imaging drum and the plate indicates that the analysis results are consistent with the experimental results, so as to lay the foundation for the reliability and stability of dynamic design and optimization design of CTP imaging drum.

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Co-Simulation Analysis for Performance Prediction of Synchronous Reluctance Drives

Electronics ◽

10.3390/electronics10172154 ◽

2021 ◽

Vol 10 (17) ◽

pp. 2154

Author(s):

Vasyl Varvolik ◽

Dmytro Prystupa ◽

Giampaolo Buticchi ◽

Sergei Peresada ◽

Michael Galea ◽

...

Keyword(s):

Finite Element ◽

Finite Element Model ◽

Simulation Model ◽

Power Electronics ◽

Simulation Analysis ◽

Element Model ◽

Good Correspondence ◽

Electric Drives ◽

Reluctance Machine ◽

Drive Control

To improve the design of electric drives and to better predict the system performance, numerical simulation has been widely employed. Whereas in the majority of the approaches, the machines and the power electronics are designed and simulated separately, to improve the fidelity, a co-simulation should be performed. This paper presents a complete coupled co-simulation model of synchronous reluctance machine (SynRel) drive, which includes the finite element model of the SynRel, the power electronics inverter, the control system, and application examples. The model of SynRel is based on a finite element model (FEM) using Simcenter MagNet. The power electronics inverter is built using PLECS Blockset, and the drive control model is built in Simulink environment, which allows for coupling between MagNet and PLECS. The proposed simulation model provides high accuracy thanks to the complete FEA-based model fed by actual inverter voltage. The comparison of the simulation results with experimental measurements shows good correspondence.

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