A computational framework for finite element modeling of traveling loads on bridges in dynamic regime

Hydroxyapatite (HA) has been proposed as a candidate material for bone implants because of its similarity to the inorganic phase in bone. However, due to its lower mechanical properties compared to bone, it has not been used in load bearing bone implants. Inclusion of second phase reinforcements in HA such as carbon nanotubes (CNT) and graphene nanosheets is expected to significantly improve its mechanical properties. In this study, a computational framework that will improve the understanding of the mechanical behavior of graphene nanosheet and CNT-reinforced HA-nanocomposites is proposed. The variation of elastic modulus of HA-nanocomposites is assessed based on the nanofiller type, volume fraction, alignment, area, thickness, and aspect ratio using the finite element modeling. The results of the simulations show that graphene nanosheets are more effective in improving the elastic modulus of nanocomposites than CNTs at similar volume fractions. HA-nanocomposites reinforced by graphene nanosheets exhibit transversely isotropic material properties and provide the highest elastic modulus when aligned along a direction or randomly distributed in a plane, whereas CNTs provide the best reinforcement when aligned along an axis. Variation in graphene nanosheet area, thickness, aspect ratio, and carbon nanotube length have negligible effect on elastic modulus of the HA-nanocomposite. In addition, comparison between the finite element simulations and theoretical calculations show that clustering of nanoinclusions reduces the effectiveness of the reinforcement they provide. The simulation results and the computational framework presented in this study are expected to help in determining the best design and manufacturing parameters that can be adapted for developing HA-nanocomposite bone implant materials.

A Blackboard Based Approach to Intelligent Finite Element Modeling and Analysis

ASME 1992 International Computers in Engineering Conference: Volume 2 — Finite Element Techniques; Computers in Education; Robotics and Controls ◽

10.1115/cie1992-0091 ◽

1992 ◽

Author(s):

Ian R. Grosse ◽

Daniel D. Corkill

Keyword(s):

Finite Element ◽

Finite Element Modeling ◽

System Architecture ◽

Physical System ◽

Multichip Module ◽

Knowledge Sources ◽

Computational Framework ◽

Modeling And Analysis ◽

Element Modeling ◽

Microelectronic Devices

Abstract In this paper a methodology and associated system architecture is proposed for the development of an intelligent finite element modeling assistant. The technique is ideally suited for specific application domains in which the physical system to be modeled can be constructed from a limited and well defined set of features. The development of knowledges sources needed to support automatic finite element modeling and analysis is discussed. A computational framework is proposed for interfacing the various knowledge sources and controlling the execution of the knowledge sources in an opportunistic manner based on the multiple expert blackboard paradigm. An example application in the domain of finite element modeling and analysis of multichip module microelectronic devices is presented and discussed.

Exact First Order Finite Element Modeling for Eddy Current NDE

Research in Nondestructive Evaluation ◽

10.1080/09349849108968051 ◽

1991 ◽

Vol 3 (1) ◽

pp. 235-253 ◽

Cited By ~ 1

Author(s):

L. D. Philipp ◽

Q. H. Nguyen ◽

D. D. Derkacht ◽

D. J. Lynch ◽

A. Mahmood

Keyword(s):

Finite Element ◽

Finite Element Modeling ◽

Eddy Current ◽

Element Modeling ◽

First Order ◽

Eddy Current Nde

Finite element modeling of laser-generated ultrasound with application to defect detection

Research in Nondestructive Evaluation ◽

10.1080/09349847.2014.968748 ◽

2014 ◽

pp. 141008191338004

Author(s):

Peyman Soltani ◽

Negar Akbareian

Keyword(s):

Finite Element ◽

Finite Element Modeling ◽

Defect Detection ◽

Element Modeling

Fatigue Testing and Finite Element Modeling of Arm-to-Pole Connections in Steel Transmission Pole Structures

Electrical Transmission and Substation Structures 2018 ◽

10.1061/9780784481837.038 ◽

2018 ◽

Author(s):

Francisco J. Bonachera Martin ◽

Jason B. Lloyd ◽

Robert J. Connor ◽

Amit Varma

Keyword(s):

Finite Element ◽

Finite Element Modeling ◽

Fatigue Testing ◽

Element Modeling

A Hierarchical Approach to Finite Element Modeling of the Human Spine

Critical Reviews in Eukaryotic Gene Expression ◽

10.1615/critreveukargeneexpr.v14.i4.60 ◽

2004 ◽

Vol 14 (4) ◽

pp. 12

Author(s):

Alistair Templeton ◽

Michael A. K. Liebschner

Keyword(s):

Finite Element ◽

Finite Element Modeling ◽

Hierarchical Approach ◽

Element Modeling ◽

Human Spine

FINITE ELEMENT MODELING OF RADIATION HEAT TRANSFER COUPLED WITH CONDUCTION WITH SURFACE BOUNDARY EVOLUTION

Proceeding of International Heat Transfer Conference 10 ◽

10.1615/ihtc10.3870 ◽

1994 ◽

Author(s):

J.-V. Daurelle ◽

R. Occelli ◽

R. Martin

Keyword(s):

Heat Transfer ◽

Finite Element ◽

Finite Element Modeling ◽

Radiation Heat Transfer ◽

Surface Boundary ◽

Radiation Heat ◽

Element Modeling

Platform for patient-specific finite-element modeling and application for radiofrequency ablation

Visualization Image Processing and Computation in Biomedicine ◽

10.1615/visualizimageproccomputatbiomed.2012004898 ◽

2012 ◽

Cited By ~ 6

Author(s):

Christian Rossmann ◽

Frank Rattay ◽

Dieter Haemmerich

Keyword(s):

Finite Element ◽

Radiofrequency Ablation ◽

Finite Element Modeling ◽

Patient Specific ◽

Element Modeling

Tire Vibration Modes and Effects on Vehicle Ride Quality

Tire Science and Technology ◽

10.2346/1.2139520 ◽

1993 ◽

Vol 21 (1) ◽

pp. 23-39 ◽

Cited By ~ 21

Author(s):

R. W. Scavuzzo ◽

T. R. Richards ◽

L. T. Charek

Keyword(s):

Finite Element ◽

Finite Element Modeling ◽

Operating Conditions ◽

Modal Testing ◽

Ride Quality ◽

Vibration Modes ◽

Inflation Pressure ◽

Passenger Cars ◽

Element Modeling ◽

Road Surfaces

Abstract Tire vibration modes are known to play a key role in vehicle ride, for applications ranging from passenger cars to earthmover equipment. Inputs to the tire such as discrete impacts (harshness), rough road surfaces, tire nonuniformities, and tread patterns can potentially excite tire vibration modes. Many parameters affect the frequency of tire vibration modes: tire size, tire construction, inflation pressure, and operating conditions such as speed, load, and temperature. This paper discusses the influence of these parameters on tire vibration modes and describes how these tire modes influence vehicle ride quality. Results from both finite element modeling and modal testing are discussed.

Evolving the Banded Radial Tire

Tire Science and Technology ◽

10.2346/1.2148778 ◽

1987 ◽

Vol 15 (1) ◽

pp. 30-41 ◽

Cited By ~ 1

Author(s):

E. G. Markow

Keyword(s):

Finite Element ◽

Wear Rate ◽

Finite Element Modeling ◽

Laboratory Tests ◽

Rolling Resistance ◽

Two Dimensional ◽

Theoretical Discussion ◽

Radial Tire ◽

Puncture Resistance ◽

Element Modeling

Abstract Development of the banded radial tire is discussed. A major contribution of this tire design is a reliable run-flat capability over distances exceeding 160 km (100 mi). Experimental tire designs and materials are considered; a brief theoretical discussion of the mechanics of operation is given based on initial two-dimensional studies and later on more complete finite element modeling. Results of laboratory tests for cornering, rolling resistance, and braking are presented. Low rolling resistance, good cornering and braking properties, and low tread wear rate along with good puncture resistance are among the advantages of the banded radial tire designs.