Kinetic Modelling and Finite Element Simulation of Natural Rubber Non-Isothermal Vulcanization

2011 ◽  
Vol 306-307 ◽  
pp. 649-653
Author(s):  
Wei Guo Yao ◽  
Yu Xi Jia ◽  
Xiao Xia Wang
Keyword(s):  
Numerical Simulation ◽  
Finite Element ◽  
Natural Rubber ◽  
Kinetic Modelling ◽  
Kinetic Equations ◽  
Processing Conditions ◽  
The Finite Element Method ◽  
Incremental Method ◽  
Element Simulation ◽  
Simulation Results

On the basis of kinetic equations constructed in the isothermal vulcanization of natural rubber (NR), a new numerical computation expression of cure degree under non-isothermal conditions is established by the incremental method. The numerical simulation of the vulcanization stage in injection molding processes of NR is performed by the finite element method, and then the time and position-dependent changes in the cure degree are analyzed numerically. The simulation results are consistent with the results described in the previous literatures. The valuable vulcanization characteristics obtained in the simulation will help engineers in the optimum design of processing conditions.

The Numerical Simulation of Effective Elastic Response for WC-Co Cemented Carbide

2015 ◽  
Vol 1096 ◽  
pp. 417-421
Author(s):  
Pei Luan Li ◽  
Zi Qian Huang
Keyword(s):  
Numerical Simulation ◽  
Finite Element Method ◽  
Finite Element ◽  
Theoretical Model ◽  
Material Properties ◽  
Cemented Carbide ◽  
Elastic Response ◽  
The Finite Element Method ◽  
Simulation Results ◽  
Element Method

By the use of finite element method, this paper predicts the effects of the shapes of reinforcements with different ductility (Co) on the effective elastic response for WC-Co cemented carbide. This paper conducts a comparative study on the material properties obtained through theoretical model, numerical simulation and experimental observations. Simulation results indicate that the finite element method is more sophisticated than the theoretical prediction.

Optimization and Numerical Simulation of Locking Mechanism

2014 ◽  
Vol 494-495 ◽  
pp. 725-728
Author(s):  
De Yong Cai ◽  
Fu Jun Liu ◽  
Gong Min Tang
Keyword(s):  
Numerical Simulation ◽  
Finite Element Method ◽  
Finite Element ◽  
Mechanical Model ◽  
The Finite Element Method ◽  
Working Process ◽  
Optimization Result ◽  
Locking Mechanism ◽  
Design Requirements ◽  
Simulation Results

The mechanical model of a new spring locking mechanism was established. The optimum spring parameters of the locking mechanism which meet the design requirements were provided by optimization. Using the finite element method, numerical simulation of working process of the locking mechanism was carried out. The rationality of optimization result was verified by simulation results of numerical simulation.

scholarly journals RETRACTED: Based on PRO/E Sheet Metal Product Design Simulation

2011 ◽  
Vol 467-469 ◽  
pp. 1357-1360
Author(s):  
Hong Bo Wang
Keyword(s):  
Numerical Simulation ◽  
Finite Element ◽  
Hydrostatic Pressure ◽  
Sheet Metal ◽  
Sheet Metal Forming ◽  
Metal Forming ◽  
Explicit Finite Element ◽  
Finite Element Software ◽  
Element Simulation ◽  
Simulation Results

Numerical simulation is an effective method for predicting formability of metals, and the use of computer simulation enables a significant increase in the number of tool designs that can be tested before hard tools are manufactured. Based on dynamic explicit finite element software, finite element simulation of sheet metal forming was performed to investigate the applicability of applying hydrostatic pressure on blank in multi point discrete dies. Simulation results show that using the hydrostatic pressure on blank is apposite for the process of multi point discrete dies.

scholarly journals Analysis of Membrane Deploying Process Based on Miura Origami

2021 ◽  
Author(s):  
Jing Zhang ◽  
Youqing Shen ◽  
Hongwei Guo ◽  
Rongqiang Liu ◽  
Ziming Kou
Keyword(s):  
Finite Element ◽  
Membrane Structure ◽  
Size Range ◽  
Membrane Surface ◽  
Stretch Ratio ◽  
The Finite Element Method ◽  
Element Simulation ◽  
Storage Volume ◽  
Two Factors ◽  
Simulation Results

Abstract Aiming at a series of characteristics of the membrane structure in the folded configuration during the deploying process, the initial defect of the membrane crease is introduced by proxy model, and to realize the study of the deploying process of the membrane. Based on the finite element method, the deploying process of the multi-element Miura membrane is simulated. And the stretch ratio, maximum mises stress, deployment rate, wrinkle deformation, etc. of membrane structure are discussed. The existence of creases can cause damage to the membrane surface, so the total length of the creases should be within an appropriate size range. By changing the number of elements and the longitudinal crease angle of the same size membrane respectively, the influence of the above two factors on the total crease length, storage volume and deploying process of the folded membrane is studied. The results show that when the longitudinal crease angle is 15°, the transverse and longitudinal displacements of the Miura folded membrane with different element numbers are not synchronized during the deploying process. By keeping the number of elements constant and increasing the angle of the longitudinal creases from 15° to 45°, the synchronization of the transverse and longitudinal displacements during the membrane deploying process is gradually enhanced. In addition, the experiment on the membrane deploying process verifies the reliability of the finite element simulation results.

Finite Element Simulation of Crack Testing System of Electromagnetic Acoustic Emission Based on ANSYS

2012 ◽  
Vol 424-425 ◽  
pp. 1097-1101 ◽  
Author(s):  
Qing Yang Zou ◽  
Xiu Cheng Dong
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Acoustic Emission ◽  
Crack Tip ◽  
Metal Plate ◽  
Testing System ◽  
The Finite Element Method ◽  
Whole Process ◽  
Element Simulation ◽  
Simulation Results

The finite element method is adopted to simulate the whole process of electromagnetic acoustic emission in this paper. The effects of different voltage on distribution of displacement and temp at the tip of the crack are discussed. The simulation results show that, above voltage loading on the metal plate, the value of the temp around the crack tip can be up to the melting point , which will melt the tip of crack. Larger melting sizes are obtained when loading voltage is increased. At the same case, the displacement duo to electromagnetic force at crack tip is much larger than this induced by thermal expansion

Numerical Simulation of Tire Sliding Events Involving Impacts with Holes and Bumps

1986 ◽  
Vol 14 (2) ◽  
pp. 125-136 ◽  
Author(s):  
Y. Nakajima ◽  
J. Padovan
Keyword(s):  
Numerical Simulation ◽  
Finite Element ◽  
Finite Element Simulation ◽  
Full Range ◽  
Arbitrary Geometry ◽  
Operating Environments ◽  
Element Simulation ◽  
Simulation Scheme

Abstract This paper extends the finite element simulation scheme to handle the problem of tires undergoing sliding (skidding) impact into obstructions. Since the inertial characteristics are handled by the algorithm developed, the full range of operating environments can be accommodated. This includes the treatment of impacts with holes and bumps of arbitrary geometry.

The study of the elastic deformation of a flexible wheel by a cam wave generator

2020 ◽  
Vol 65 (1) ◽  
pp. 51-58
Author(s):  
Sava Ianici
Keyword(s):  
Numerical Simulation ◽  
Finite Element Method ◽  
Finite Element ◽  
Elastic Deformation ◽  
Theoretical Study ◽  
Elastic Field ◽  
The Finite Element Method ◽  
Elastic Deformations ◽  
Wave Generator ◽  
Two Stages

The paper presents the results of research on the study of the elastic deformation of a flexible wheel from a double harmonic transmission, under the action of a cam wave generator. Knowing exactly how the flexible wheel is deformed is important in correctly establishing the geometric parameters of the wheels teeth, allowing a better understanding and appreciation of the specific conditions of harmonic gearings in the two stages of the transmission. The veracity of the results of this theoretical study on the calculation of elastic deformations and displacements of points located on the average fiber of the flexible wheel was subsequently verified and confirmed by numerical simulation of the flexible wheel, in the elastic field, using the finite element method from SolidWorks Simulation.

Nonlinear Dynamic Response of Buoys under the Collision Load with Ships

2012 ◽  
Vol 204-208 ◽  
pp. 4455-4459 ◽  
Author(s):  
Liu Hong Chang ◽  
Chang Bo Jiang ◽  
Man Jun Liao ◽  
Xiong Xiao
Keyword(s):  
Numerical Simulation ◽  
Finite Element ◽  
Analysis Software ◽  
Element Analysis ◽  
Nonlinear Dynamic Response ◽  
Dynamic Finite Element ◽  
Simulation Results ◽  
Collision Force ◽  
Explicit Dynamic ◽  
Element Theory

The explicit dynamic finite element theory is applied on the collision of ships with buoys for computer simulation. Using ANSYS/LS-DYNA finite element analysis software, the numerical simulation of the collision between the ton ship and the buoy with different structures and impact points. The collision force, deformation, displacement parameters and the weak impact points of a buoy are obtained. Based on the numerical simulation results, analysis of buoys and structural collision damages in anti-collision features are discussed, and several theoretical sugestions in anti-collision for the design of buoy are provided.

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