Study on Effect of Resonance on the Motion of Floating Body

2013 ◽  
Vol 353-356 ◽  
pp. 3713-3716
Author(s):  
Lin Sen Zhu ◽  
Yan Gang Wang ◽  
Yong Liu
Keyword(s):  
Finite Element ◽  
Numerical Calculation ◽  
Finite Element Simulation ◽  
Body Motion ◽  
Floating Body ◽  
Second Law ◽  
Harmonic Oscillations ◽  
Element Simulation ◽  
Nature Frequency ◽  
The Impact

This paper aims to study the impact of resonance on floating body motion. According to Archimedes law, Newton's second law of motion and general form of simple harmonic oscillations, nature frequency is gotten in the numerical calculation. Then, the result is validated using four bodies with different weights in numerical calculation and finite element simulation.

A STUDY ON IMPACT DEFORMATION AND TRANSFORMATION BEHAVIOR OF TRIP STEEL BY FINITE ELEMENT SIMULATION AND EXPERIMENT

2008 ◽  
Vol 22 (31n32) ◽  
pp. 5985-5990 ◽  
Author(s):  
TAKESHI IWAMOTO ◽  
TOSHIYUKI SAWA ◽  
MOHAMMED CHERKAOUI
Keyword(s):  
Finite Element ◽  
Martensitic Transformation ◽  
Finite Element Simulation ◽  
Trip Steel ◽  
Deformation Behavior ◽  
Implicit Time ◽  
Transformation Behavior ◽  
Impact Deformation ◽  
Element Simulation ◽  
The Impact

Due to strain-induced martensitic transformation (SIMT), the strength, ductility and toughness of TRIP steel are enhanced. The impact deformation behavior of TRIP steel is very important because it is investigated to apply it for the shock absorption member in automobile industries. However, its behavior is still unclear since it is quite difficult to capture the transformation behavior inside the materials. There are some opinions that the deformation characteristics are not mainly depending on the martensitic transformation due to heat generation by plastic work. Here, the impact compressive deformation behavior of TRIP steel is experimentally studied by Split Hopkinson Pressure Bar (SHPB) method at room temperature. In order to catch SIMT behavior during impact deformation, volume resistivity is measured and a transient temperature is captured by using a quite thin thermocouple. Then, a finite element simulation with the constitutive model for TRIP steel is performed. The finite element equation can be derived from the rate form of principle of virtual work based on the implicit time integration scheme. Finally, the results between the computation and experiment are compared to confirm the validity of computational model.

scholarly journals Development of impact attenuator analysis tools in crash scenario using Euler method and finite element analysis

2022 ◽  
Vol 69 (1) ◽  
Author(s):  
Malik Athafarras ◽  
Djati Wibowo Djamari ◽  
Muhamad Rausyan Fikri ◽  
Bentang Arief Budiman ◽  
Farid Triawan ◽  
...  
Keyword(s):  
Finite Element ◽  
Finite Element Simulation ◽  
Simulation Method ◽  
Euler Method ◽  
Element Analysis ◽  
Time Model ◽  
Crash Simulation ◽  
Car Crash ◽  
Element Simulation ◽  
The Impact

AbstractThe problem considered in this work is the development of simulation method for simulating car crash which utilizes simple car—impact attenuator model developed in MATLAB. Usually, car crash simulation is done using full finite element simulation which could take hours or days depending on the model size. The purpose of proposed method is to achieve quick results on the car crash simulation. Past works which utilizes simple car—impact attenuator model to simulate car crash use continuous time model and the impact attenuator parameter is obtained from the experimental results. Different from the related works, this work uses discrete time model, and the impact attenuator parameter is obtained from finite element simulation. Therefore, the proposed simulation method is not only achieving quick simulation results but also minimizing the cost and time in obtaining the impact attenuator parameter. The proposed method is suitable for parametric study of impact attenuator.

Dynamic Analysis of Frontal Human Skull Using Finite Element Simulation

2013 ◽  
Vol 647 ◽  
pp. 418-423
Author(s):  
Shahrul Hisyam Marwan ◽  
Abdul Halim Abdullah ◽  
Jamaluddin Mahmud ◽  
Helmi Rashid
Keyword(s):  
Finite Element ◽  
Finite Element Simulation ◽  
Test Procedure ◽  
Human Head ◽  
Head Impact ◽  
Experimental Result ◽  
Human Skull ◽  
Element Simulation ◽  
The Impact ◽  
Selection Of

The main purpose of the present study is to develop one degree of freedom of frontal human head impact test procedure using finite element simulation. This study is to compare the results between simulation and experimental result conducted by Delye et al. To conduct this study, the process involve is to develop finite element modeling of human skull and to analyze the data analysis which investigating the impact conditions of human skull during a human head impact on the resulting total deformation and stress distribution. There were geometric preparations, selection of elements, selection of materials, application of loadings, and the specification of boundary conditions.

Heat Loss Analysis of Giant Magnetostrictive Actuator for Precision Alignment

2011 ◽  
Vol 317-319 ◽  
pp. 3-7
Author(s):  
Yi Fang ◽  
Xiao Peng Li ◽  
Chuan Hui Liu
Keyword(s):  
Finite Element ◽  
Theoretical Analysis ◽  
Experimental Method ◽  
Finite Element Simulation ◽  
Temperature Rise ◽  
Loss Analysis ◽  
Control Precision ◽  
Element Simulation ◽  
Magnetostrictive Actuator ◽  
The Impact

Giant magnetostrictive actuator is ideal for fast precision Alignment, but the nonlinear strain caused by temperature rise has serious impact on the control precision. This paper verifies the impact of strain caused by temperature rising on the experimental method, based on analyzing the principle of the giant magnetostrictive actuator. The copper consumption in giant magnetostrictive actuator coil , the iron consumption in the magnetostrictive rod and the corresponding method of inhibiting temperature rise were analyzed by theoretical analysis and finite element simulation.

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