scholarly journals Strength Training Characteristics of Different Loads Based on Acceleration Sensor and Finite Element Simulation

Sensors ◽  
2021 ◽  
Vol 21 (2) ◽  
pp. 647
Author(s):  
Bo Pang ◽  
Zhongqiu Ji ◽  
Zihua Zhang ◽  
Yunchuan Sun ◽  
Chunmin Ma ◽  
...  
Keyword(s):  
Finite Element ◽  
Knee Joint ◽  
Evaluation System ◽  
Bench Press ◽  
Element Analysis ◽  
Element Simulation ◽  
The Finite Element Analysis ◽  
Intensity Of Exercise ◽  
Deep Squat ◽  
Main Factor

Deep squat, bench press and hard pull are important ways for people to improve their strength. The use of sensors to measure force is rare. Measuring strength with sensors is extremely valuable for people to master the intensity of exercise to scientifically effective exercise. To this end, in this paper, we used a real-time wireless motion capture and mechanical evaluation system of the wearable sensor to measure the dynamic characteristics of 30 young men performing deep squat, bench press and hard pull maneuvers. The data of tibia were simulated with AnyBody 5.2 and ANSYS 19.2 to verify the authenticity. The result demonstrated that the appropriate force of the deep squat elbow joint, the hip joint and the knee joint is 40% 1RM, the appropriate force of the bench press is 40% 1RM and the appropriate force of the hard pull is 80% 1RM. The external force is the main factor of bone change. The mechanical characteristics of knee joint can be simulated after the Finite Element Analysis and the simulation of AnyBody model are verified.

Investigation of Corner Cavity Formation During Backward Cup Extrusion Process Using Finite Element Method

2009 ◽  
Author(s):  
Arash Khajeh ◽  
Ramin Ebrahimi ◽  
Mohammad Mohsen Moshksar
Keyword(s):  
Finite Element ◽  
Extrusion Process ◽  
Critical Value ◽  
Cavity Formation ◽  
Element Analysis ◽  
Temporal Prediction ◽  
Element Simulation ◽  
The Finite Element Analysis ◽  
Considerable Impact ◽  
Reduction Of Area

This study focuses on the finite element analysis of the formation of corner cavity defect during the Backward Cup Extrusion (BCE) process. In the final stage of this process, when the bottom thickness reaches to a critical value this defect will be appear as a circumferential defect in the corner of the cup. In addition, this research examines the temporal prediction of onset of corner cavity formation in the various amounts of the reduction of areas. The finite element simulation results were compared with those of the experimental, indicating that the amount of the reduction of area and that of the friction coefficient have considerable impact on the onset of corner cavity formation during the BCE process.

Research on Finite Element Simulation and Test of Two-Pass Deep Drawing Forming for Conical Parts

2013 ◽  
Vol 652-654 ◽  
pp. 1966-1970
Author(s):  
Zhi Ren Han ◽  
Ze Bing Yuan
Keyword(s):  
Finite Element ◽  
Finite Element Simulation ◽  
Deep Drawing ◽  
Forming Limit Diagram ◽  
Forming Limit ◽  
Element Analysis ◽  
Element Simulation ◽  
The Finite Element Analysis ◽  
Deep Drawing Test ◽  
As Stress

This paper is focus on two-Pass Deep Drawing Forming of conical axisymmetric parts, study on the finite element simulation and test of multi-Pass deep drawing part. It carry on the finite element analysis and calculation using the ANSYS/LS-DYNA software platform, analyzing the simulation results such as stress , strain distribution and formability by post-processing LSPOST software. It was done multi-Pass deep drawing test using a set of combined type mould. Based on the multi-Pass forming test by using a set of combined type mould, comparison of simulation and test data can be obtained through the forming limit diagram. The result of simulation and test is basically the same and both reflect the formability.

Random Vibration Structure Fatigue Analysis Based on Finite Element Simulation

2014 ◽  
Vol 875-877 ◽  
pp. 2078-2086
Author(s):  
Long Tao Liu ◽  
Chuan Ri Li ◽  
Shuang Long Rong ◽  
You Gang Jin
Keyword(s):  
Finite Element ◽  
Random Vibration ◽  
Element Model ◽  
Product Structure ◽  
Structure Design ◽  
Frequency Domain Method ◽  
Element Analysis ◽  
Power Spectral ◽  
Element Simulation ◽  
The Finite Element Analysis

In order to analyze the fatigue of the airborne product structure, the modal analysis and random vibration analysis are conducted for the product by using the finite element analysis software ANSYS. The modal analyzing results are compared with the modal test results and the finite element model is corrected. The stress response power spectral density is obtained from random vibration analyzing. A frequency domain method for calculating the fatigue damage of the structure is presented. The simulation results are in agreement with the reliability enhancement testing results. An optimization scheme for the product structure design is given.

Using Magnetic Measurement Technology in Marine Riser Stress Detection

2010 ◽  
Author(s):  
Fanshun Meng ◽  
Rui Deng ◽  
Dawei Wang ◽  
Yanming Huang ◽  
Liyan Wang
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Magnetic Measurement ◽  
Measurement Technology ◽  
Stress Detection ◽  
Marine Riser ◽  
Element Analysis ◽  
Element Simulation ◽  
The Finite Element Analysis ◽  
The Impact

The marine riser bears various power loads during operation. We designed the Quadrupole-type magnetic measurement probe based on the inverse magnetostrictive effect (the impact of stress on the magnetization) and performed finite element simulation and experimental analysis. The results of both the finite element analysis and magnetic measurement basically follow the same trend, so we conclude that this four-pole magnetic probe measurement can quantitatively evaluate the force state in a marine riser.

scholarly journals Building Structure Simulation System Based on BIM and Computer Model

2021 ◽  
Vol 2021 ◽  
pp. 1-10
Author(s):  
Bao Zhu ◽  
Huan Feng
Keyword(s):  
Finite Element ◽  
Simulation Method ◽  
Test System ◽  
Simulation System ◽  
Building Structure ◽  
Test Results ◽  
Element Analysis ◽  
Element Simulation ◽  
The Finite Element Analysis ◽  
Structure Simulation

This paper does some research and discussion on the finite element analysis of a building structure, especially the computer graphics simulation method in building structure simulation. Moreover, with the support of BIM technology and computer finite element simulation technology, this paper constructs a building structure simulation system and analyzes the building structure simulation system based on actual conditions such as building structure and stress load. In addition, this paper improves the traditional structural analysis algorithm and designs experiments to evaluate the effect of the method proposed in this paper and analyze the data in the form of simulation to compare the validity of the test results. Finally, an experiment is designed to evaluate the data processing capability of the test system in this paper. The experimental analysis results verify the effectiveness of the method in this paper, which can provide relevant theoretical references for subsequent building structure simulation.

The Finite Element Analysis of Standard Knee Prosthesis

2011 ◽  
Vol 403-408 ◽  
pp. 2535-2538
Author(s):  
Li Min Dong ◽  
Xi Yan Tian ◽  
You Quan Gu ◽  
Chun Qiu Zhang
Keyword(s):  
Finite Element ◽  
Knee Joint ◽  
Knee Prosthesis ◽  
Femoral Condyle ◽  
Lower Surface ◽  
Surface Load ◽  
Element Analysis ◽  
Finite Element Software ◽  
The Finite Element Analysis ◽  
Ultra High Molecular Weight

The research uses the finite element software ANSYS to analyze the stress of the standard artificial knee joint, particularly the contact stress between the femoral condyle and the ultra-high molecular weight polyethylene (UHMWPE) meniscus. When analyze the stress of the standard artificial knee joint in the case that knee joint unbend (bend 0°) and bend 10°and 20°, the lower surface of the proximal tibia maintains completely constraints and we apply the corresponding constraints and surface load with the actual situation.Finally calculate the stress distribution of the artificial knee joint. The analysis results were compared with the stress of the normal knee joint to further improve the design of the artificial knee joint.

Finite Element Simulation and Experimental Analysis of O-P Hardness

2014 ◽  
Vol 1033-1034 ◽  
pp. 462-465
Author(s):  
Yong Huang ◽  
De Jun Ma ◽  
W. Chen ◽  
Jia Liang Wang ◽  
Liang Sun
Keyword(s):  
Numerical Simulation ◽  
Finite Element ◽  
Finite Element Simulation ◽  
Simulation Method ◽  
Indentation Hardness ◽  
Element Analysis ◽  
Simulation Techniques ◽  
Element Simulation ◽  
The Finite Element Analysis ◽  
Finite Element Numerical Simulation

Based on the finite element analysis method to simulate the O-P hardness. Taking S45C steel as an example, comparative analysis of O-P hardness of finite element simulation and O-P hardness of instrument indentation hardness experiment, results show that difference of S45C steel’s O-P hardness between the finite element simulation and real experiment is-2.62% Accordingly seen, O-P hardness can be obtained by finite element numerical simulation method, it’s a possible way to study relations between O-P hardness and Vickers hardness based on finite element numerical simulation techniques.

Finite Element Simulation of Formed Steel Components

2014 ◽  
Vol 622-623 ◽  
pp. 632-642
Author(s):  
Stephen Akinlabi ◽  
Francesco Pietra ◽  
Esther Titilayo Akinlabi
Keyword(s):  
Finite Element ◽  
Finite Element Simulation ◽  
Thermal Stresses ◽  
Geometrical Shape ◽  
Element Analysis ◽  
Steel Sheets ◽  
Element Simulation ◽  
The Finite Element Analysis ◽  
Mechanical Press ◽  
Commercial Package

Forming is a manufacturing process by which the geometrical shape and size of sheet and plate metals are changed by means of either an external force using mechanical presses and dies or induced thermal stresses by external heat. This study reports on the finite element analysis of mechanically formed steel components using the ANSYS commercial package version 14.5. The samples of the steel sheets were mechanically formed to about 120 mm curvatures using a 20 ton capacity eccentric mechanical press at room temperature. The results showed that the steel samples were successfully formed to the curvature of about 120 mm and the finite element modelled results confirmed the experimental measured curvature. Key words: Forming, Mechanical presses, Finite Element Simulation and Sheets.

Kinematic and Dynamic Analysis of Large Coal Vibrating Screen

2011 ◽  
Vol 105-107 ◽  
pp. 444-447 ◽  
Author(s):  
Zhong Jun Yin ◽  
Lei Zhang ◽  
Bing Chen
Keyword(s):  
Finite Element ◽  
Dynamic Analysis ◽  
Virtual Prototype ◽  
Prototype Model ◽  
Analysis Model ◽  
Element Analysis ◽  
Finite Element Analysis Model ◽  
Element Simulation ◽  
Stress Concentration Region ◽  
The Finite Element Analysis

The virtual prototype model of the coal screen is established with Pro/E and RecurDyn based on virtual prototype technology. The kinematic characteristics of different points are obtained by simulation. At the same time, the finite element analysis model of a screen box is established with ANSYS. Modal analysis and harmonic analysis have been carried out based on dynamic analysis technology. According to the results of dynamic finite element simulation, some corresponding improvements were made for the structure of screen box, which makes the stress concentration region of screen box decreased and more uniform stress distribution to meet the design requirements.

Finite Element Simulation Application for Vibration Characteristic of Violin

2014 ◽  
Vol 620 ◽  
pp. 662-667
Author(s):  
Cheng Zhong Zhang ◽  
Bang Yan Ye ◽  
Xi Zhi Hu ◽  
Xue Zhi Zhao ◽  
Yun Feng Cao
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Geometric Modeling ◽  
Structural Parameters ◽  
Plate Height ◽  
Element Analysis ◽  
Element Simulation ◽  
Finite Element Technology ◽  
The Finite Element Analysis ◽  
Plate Geometry

In this paper, Finite Element Technology is applied to study the vibration state of violin sounding box using numerical simulation. By means of geometric modeling for the complicated shape of violin sounding box and Finite Element Analysis, the structural parameters of violin box, including thickness of violin plate, height and distribution and change of the shape of arch in front plate geometry, status of bass bar and sound-post etc, are investigated for their influence on vibration patterns and frequency response of violin box. Experiment is carried out for measuring the frequencies responses of violin box to verify the results of the Finite Element Analysis. This research provides a feasible way of theories for violin makers to improve the vibration characteristics of violin.

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