Application of Finite Element Methods for the Analysis of Restitution Coefficients for Golf Club Heads

Finite element methods are applied to investigate the coefficient of restitution (COR) for the head of a golf club. ANSYS commercial finite element software is first applied to determine the COR of two different disc-shaped titanium impact surfaces. These values were then experimentally verified to validate the accuracy of the finite element model. Finally, ANSYS was applied to determine the COR for club heads according to USGA specifications to confirm the reliability of the finite element model. The model is then validated by comparison with experimental results. The model can not only reduce time needed for product design and experimental testing, but can serve as a basis for follow-up studies on ball flight trajectory.

Design and Simulation of the New Bionic Soil Extruding Head

10.4028/www.scientific.net/amr.479-481.457 ◽

2012 ◽

Vol 479-481 ◽

pp. 457-461

Author(s):

Dong Hui Chen ◽

Xin Lu ◽

Xing Wang Chai ◽

Bao Gang Wang ◽

Hong Xia Guo ◽

...

Keyword(s):

Finite Element ◽

Finite Element Model ◽

Simulation Model ◽

Element Model ◽

Maximum Force ◽

Soil Parameters ◽

Drilling Depth ◽

Finite Element Software ◽

Changing Trends ◽

In this paper，soil parameters and the collected data were tested and processed, and the changing trends of force with drilling depth were obtained and the maximum force applying to the working components was picked up. Compared with the smooth working component, the force applying to the unsmooth working components is smaller. Some parameters needed in Drucker-Prager soil model were measured and modified according to the basic tests. The simulation model was built in the finite element software -ANSYS. The simulation result is consistent with the actual testing result, which confirms the finite element model is correct .

Study on Finite Element Model of Bridge Multi-Pile Foundation

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.456.103 ◽

2010 ◽

Vol 456 ◽

pp. 103-114

Author(s):

Shi Ling Xing ◽

Jian Shu Ye ◽

Hang Sun

Keyword(s):

Finite Element ◽

Finite Element Model ◽

Pile Foundation ◽

Bending Moment ◽

Highway Bridges ◽

Element Model ◽

Boundary Constraints ◽

Finite Element Software ◽

Friction Pile ◽

In order to use finite element software to complete the design or calculation of bridge multi-pile foundation, this paper discusses the finite element model (FEM) of a bridge multi-pile based on the theory and provisions in Code for Design of Ground Base and Foundation of Highway Bridges and Culverts (CDGBFHBC 2007) of china. For the FEM of a bridge-multi pile foundation, cap is regarded as a rigid body, piles are taken as beams, and boundary constraints are a series of horizontal springs and vertical springs. First, the formula of stiffness for horizontal springs and bottom vertical spring is derived according to elastic ground base theory and winkler hypotheses. Secondly, for the friction pile, the stiffness of vertical springs on piles side is derived basis of the principle of friction generated and simplified distribution of pile shaft resistance. Then, the FEM of multi-pile needs pay attention to three issues: the simulation of connections between piles and cap, elastic modulus needs discount, and the weight for pile underneath the ground line (or local scour line) needs calculate by half. Taking pile section bending moment often control the design and calculation of pile into account, this paper gives a simplified FEM of pile. Finally, an example is used to introduce the application of the FEM of bridge multi-pile foundation.

The Thermal Effect in Wheel and Rail during the Brake of Port Crane

10.4028/www.scientific.net/amr.487.879 ◽

2012 ◽

Vol 487 ◽

pp. 879-883

Author(s):

Jiang Wei Wu

Keyword(s):

Finite Element Method ◽

Finite Element ◽

Finite Element Model ◽

Thermal Effect ◽

Thermal Effects ◽

Element Model ◽

The Finite Element Method ◽

Finite Element Software ◽

Frictional Coefficients ◽

With the port crane getting bigger and heavier, and also moving much faster than before, the thermal effect in wheel and rail during the brake process can be a reason of the failure of port crane. In this paper, the thermal effect during the brake process of port crane is studied using the finite element method. Based on the finite element model, the ANSYS10.0 finite element software is used. The thermal effects under different coefficients are discussed. Three different slide speed of wheel, two different loads of crane, and three different frictional coefficients are applied. The importance of the different coefficients is obtained from the numerical results.

Evaluation and Validation of a Multiphysics Finite Element Model for a Piezoelectric Energy Harvester

Transactions of the Canadian Society for Mechanical Engineering ◽

10.1139/tcsme-2019-0283 ◽

2021 ◽

Author(s):

Andrew Melro ◽

Kefu Liu

Keyword(s):

Finite Element Method ◽

Finite Element ◽

Finite Element Model ◽

Energy Harvester ◽

Proof Mass ◽

Experimental Testing ◽

Element Model ◽

Load Resistance ◽

Piezoelectric Energy ◽

This paper explores the applicability of using the multiphysics finite element method to model a piezoelectric energy harvester. The piezoelectric energy harvester under consideration consists of a stainless-steel cantilever beam attached by a piezoelectric ceramic patch. Two configurations are considered: one without a proof mass and one with a proof mass. Comsol Multiphysics software is used to simultaneously model three physics: the solid mechanics, the electrostatics, and the electrical circuit physics. Several key relationships are investigated to predict the behaviours of the piezoelectric energy harvester. The effects of the electrical load resistance and a proof mass on the performance of a piezoelectric energy harvester are evaluated. Experimental testing is conducted to validate the results found by the finite element model. Overall, the results from the finite element model closely match those from the experimental testing. It is found that increasing the load resistance of the piezoelectric energy harvester causes an increase in voltage across the load resistor, and matching the impedance yields the maximum power output. Increasing the proof mass reduces the fundamental frequency that results in an increase of the displacement transmissibility and the impedance matched resistance. The study shows that the multiphysics finite element method is effective to model piezoelectric energy harvesters.

A Truck Cab Abnormal Vibration Test and Analysis

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.416-417.1803 ◽

2013 ◽

Vol 416-417 ◽

pp. 1803-1807

Author(s):

Qiang Li ◽

Yan Fang Liu ◽

Xiang Yang Xu

Keyword(s):

Finite Element ◽

Finite Element Model ◽

Element Model ◽

Radial Force ◽

Test Results ◽

Element Simulation ◽

Force Variation ◽

Specific Speed ◽

This paper introduces a combination of testing and finite element simulation for the abnormal vibration of a truck cab in specific speed. Vibration characteristics of the truck is tested. The factors that caused the abnormal vibration of the truck is found. The finite element model is established and the modal analysis is performed, the correctness of the test results is verified, and a reliable finite element model for the follow-up solution is provided. The abnormal vibration was caused by the frequencies of radial force variation which almost equal to the truck natural frequency under the vehicle velocities of 50km/h. The approach described in this paper can be applied to similar vibration problem diagnosis.

Damage identification in concrete structures with uncertain but bounded measurements

Structural Health Monitoring ◽

10.1177/1475921716676993 ◽

2016 ◽

Vol 16 (6) ◽

pp. 649-662 ◽

Cited By ~ 2

Author(s):

Suryakanta Biswal ◽

Ananth Ramaswamy

Keyword(s):

Finite Element ◽

Finite Element Model ◽

Posterior Probability ◽

Optimization Technique ◽

Concrete Structures ◽

Element Model ◽

Reinforced Concrete Beams ◽

Finite Element Software ◽

Damage Indices ◽

The major sources of error in the measurements of concrete structures are the gauge sensitivities, calibration accuracies, amplitude linearities, and temperature corrections to the gauge sensitivities, which are given in terms of plus–minus ranges, and the round off errors in the measured responses, which are better represented by interval bounds. An algorithm is proposed adapting the existing modified Metropolis Hastings algorithm for estimating the posterior probability of the damage indices as well as the posterior probability of the bounds of the interval parameters, when the measurements are given in terms of interval bounds. A damage index is defined for each element of the finite element model considering the parameters of each element are intervals. Methods are developed for evaluating response bounds in the finite element software ABAQUS, when the parameters of the finite element model are intervals. The proposed method is validated against reinforced concrete beams with three damage scenarios mainly (1) loss of stiffness, (2) loss of mass, and (3) loss of bond between concrete and reinforcement steel, which have been tested in our laboratory. Comparison of the prediction from the proposed method with those obtained from Bayesian analysis and interval optimization technique show improved accuracy and computational efficiency in addition to better representation of measurement uncertainties through interval bounds.

Axial Strength of Tube-to-Tubesheet Joints: Finite Element and Experimental Evaluations

Journal of Pressure Vessel Technology ◽

10.1115/1.1398555 ◽

2001 ◽

Vol 124 (1) ◽

pp. 22-31 ◽

Cited By ~ 27

Author(s):

M. Allam ◽

A. Bazergui

Keyword(s):

Finite Element ◽

Analytical Solution ◽

Finite Element Model ◽

Experimental Testing ◽

Element Model ◽

Axial Strength ◽

Pull Out ◽

Push Out ◽

Pull Out Strength ◽

Because of their importance for the integrity of heat exchangers, the strength of tube-to-tubesheet joints, and particularly their axial strength, is of special interest. A finite element model of an expanded tube-to-tubesheet joint is proposed and examined experimentally with the objective of determining numerically its axial strength. Simplified analytical methods that were previously proposed by many authors to predict the joint axial strength are also used in this investigation. Experimental testing shows that the finite element model is highly accurate for calculating the joint axial strength. The experimental investigation also proves that the pull-out strength is overestimated when calculated using a simple analytical solution. A parametric analysis using the finite element results indicates that the pull-out force is normally lower than the push-out load and that both are lower than the estimations of the analytical solution. The results indicate that the pull-out force as given by the finite element model is generally 35 percent lower than that evaluated by the analytical solution. A difference of as much as 10 percent is also found between the push-out and pull-out loads.

Finite Element Analysis of Tensile Modulus of X-Cor Sandwich

10.4028/www.scientific.net/amr.403-408.3647 ◽

2011 ◽

Vol 403-408 ◽

pp. 3647-3651

Author(s):

Xu Dan Dang ◽

Shao Jie Shi ◽

Jun Xiao

Keyword(s):

Finite Element Analysis ◽

Finite Element ◽

Finite Element Model ◽

Tensile Modulus ◽

Element Model ◽

Element Analysis ◽

Finite Element Software ◽

Basic Hypothesis ◽

Micro Structures ◽

Through the analysis of micro-structures of Z-pin ends the basic hypothesis of elliptic configuration of the resin regions around Z-pin ends were proposed. The finite element model of the tensile modulus of X-cor sandwich was established and the finite element software ANSYS was used in the computation. The effects of Z-pin angle, diameter and density on the tensile modulus of X-cor sandwich were analyzed. Via the analysis of finite element model, the influencing trends of parameters of X-cor sandwich on the tensile modulus are achieved and the error range is ±10%. So the rationality of the proposed finite element model is verified and the finite element model can be used to forecast the tensile modulus of X-cor sandwich.

Finite Element Analysis of X-Cor Sandwich’s Shear Modulus

10.4028/www.scientific.net/amr.328-330.1113 ◽

2011 ◽

Vol 328-330 ◽

pp. 1113-1117

Author(s):

Xu Dan Dang ◽

Shao Jie Shi ◽

Jin San Jiang ◽

Jun Xiao

Keyword(s):

Finite Element Analysis ◽

Finite Element ◽

Shear Modulus ◽

Finite Element Model ◽

Geometric Analysis ◽

Element Model ◽

Analysis Model ◽

Element Analysis ◽

Finite Element Software ◽

Through the observation of photomicrographs of resin regions around Z-pin ends, the basic hypothesis of the elliptic configuration of resin regions in the X-cor sandwich were proposed. The parametric equations for describing the microscopic structures of resin regions were given. Then the geometric analysis model of X-cor sandwich was established. The finite element software ANSYS was used to establish the finite element model of the shear modulus and the shear modulus was calculated. The error range of finite element analysis is between ±10%. So the rationality of finite element model is verified and the finite element model can be used to forecast the shear modulus.

Experimental and numerical analyses of stiffened composite panels with delamination under a compressive load

Journal of Composite Materials ◽

10.1177/0021998319875209 ◽

2019 ◽

Vol 54 (9) ◽

pp. 1197-1216 ◽

Cited By ~ 1

Author(s):

Yujiao Bai ◽

Zhonghai Xu ◽

Jieren Song ◽

Linlin Miao ◽

Chaocan Cai ◽

...

Keyword(s):

Finite Element ◽

Finite Element Model ◽

Failure Process ◽

Element Model ◽

Composite Panels ◽

Static Compression ◽

Delamination Growth ◽

Finite Element Software ◽

Stiffened Composite Panels ◽

L-shaped stiffened composite panels provide an efficient structure for engineering applications. However, they often produce delamination in the preparation and service process due to a series of factors. To study the effect of different types of delamination on the compressive strength of stiffened composite panels, ABAQUS finite element software was used in combine with the progressive damage subroutine user-defined field variable (USDFLD), and the finite element model was established based on cohesive theory to realize the prediction of the progressive failure process and strength of the stiffened composite panels. The results showed that the delamination of a stringer had a greater impact on the strength of the stiffened composite panels than did the debonding between the skin panel and a stringer and the delamination of the skin panel. The debonding delamination and delamination of a stringer exhibited delamination growth near the damage position during static compression, but delamination of the skin panel exhibited no delamination growth. The experimental results were in good agreement with the finite element simulation results, which verified the validity of the finite element model.