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Research Output 1981 2019

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2019

Enhancing the predictive capabilities of a composite plasticity model using cohesive zone modeling

Khaled, B. M., Shyamsunder, L., Holt, N., Hoover, C., Rajan, S. & Blankenhorn, G., Jun 1 2019, In : Composites Part A: Applied Science and Manufacturing. 121, p. 1-17 17 p.

Research output: Contribution to journalArticle

Plasticity
Delamination
Composite materials
Laminated composites
Constitutive models
1 Citation (Scopus)

Simulating the Fracture of Notched Mortar Beams through Extended Finite-Element Method and Peridynamics

Das, S., Hoffarth, C., Ren, B., Spencer, B., Sant, G., Rajan, S. & Neithalath, N., Jul 1 2019, In : Journal of Engineering Mechanics. 145, 7, 04019049.

Research output: Contribution to journalArticle

Mortar
Finite element method
Cements
Fracture energy
Crack tips
2018
2 Citations (Scopus)

Analysis and Characterization of Damage Using a Generalized Composite Material Model Suitable for Impact Problems

Goldberg, R. K., Carney, K. S., DuBois, P., Hoffarth, C., Khaled, B., Rajan, S. & Blankenhorn, G., Jul 1 2018, In : Journal of Aerospace Engineering. 31, 4, 04018025.

Research output: Contribution to journalArticle

Composite materials
Plasticity
Plastic deformation
Polymer matrix composites
Stress-strain curves
1 Citation (Scopus)

Damage characterization of composites to support an orthotropic plasticity material model

Khaled, B., Shyamsunder, L., Hoffarth, C., Rajan, S., Goldberg, R. K., Carney, K. S., DuBois, P. & Blankenhorn, G., Jan 1 2018, (Accepted/In press) In : Journal of Composite Materials.

Research output: Contribution to journalArticle

Plasticity
Composite materials
Temperature

Implementation of a tabulated failure model into a generalized composite material model

Goldberg, R. K., Carney, K. S., DuBois, P., Hoffarth, C., Khaled, B., Shyamsunder, L., Rajan, S. & Blankenhorn, G., Jan 1 2018, (Accepted/In press) In : Journal of Composite Materials.

Research output: Contribution to journalArticle

Composite materials
Plasticity
Polymer matrix composites
Constitutive models
6 Citations (Scopus)

Microstructure-guided numerical simulations to predict the thermal performance of a hierarchical cement-based composite material

Das, S., Aguayo, M., Rajan, S., Sant, G. & Neithalath, N., Mar 1 2018, In : Cement and Concrete Composites. 87, p. 20-28 9 p.

Research output: Contribution to journalArticle

Phase change materials
Cements
Thermal conductivity
Microstructure
Thermodynamic properties
2017
4 Citations (Scopus)

Experimental characterization of composites to support an orthotropic plasticity material model

Khaled, B., Shyamsunder, L., Hoffarth, C., Rajan, S., Goldberg, R. K., Carney, K. S., DuBois, P. & Blankenhorn, G., Jan 1 2017, (Accepted/In press) In : Journal of Composite Materials.

Research output: Contribution to journalArticle

Plasticity
Composite materials
Aerospace industry
Constitutive models
Materials properties
5 Citations (Scopus)

Using Virtual Tests to Complete the Description of a Three-Dimensional Orthotropic Material

Harrington, J., Hoffarth, C., Rajan, S., Goldberg, R. K., Carney, K. S., Dubois, P. & Blankenhorn, G., Sep 1 2017, In : Journal of Aerospace Engineering. 30, 5, 04017025.

Research output: Contribution to journalArticle

Composite materials
Testing
Stress-strain curves
Constitutive models
Large scale systems
6 Citations (Scopus)

Verification and validation of a three-dimensional Orthotropic Plasticity constitutive model using a unidirectional composite

Hoffarth, C., Khaled, B., Shyamsunder, L., Rajan, S., Goldberg, R., Carney, K. S., DuBois, P. & Blankenhorn, G., Mar 1 2017, In : Fibers. 5, 1, 12.

Research output: Contribution to journalArticle

Constitutive models
Plasticity
Composite materials
Aerospace industry
Elastic deformation
2016
13 Citations (Scopus)

Development of an Orthotropic Elasto-Plastic Generalized Composite Material Model Suitable for Impact Problems

Goldberg, R. K., Carney, K. S., Dubois, P., Hoffarth, C., Harrington, J., Rajan, S. & Blankenhorn, G., Jul 1 2016, In : Journal of Aerospace Engineering. 29, 4, 04015083.

Research output: Contribution to journalArticle

Plastics
Composite materials
Plastic deformation
Polymer matrix composites
Aerospace industry
8 Citations (Scopus)

Finite element modeling of human brain response to football helmet impacts

Darling, T., Muthuswamy, J. & Rajan, S., Feb 11 2016, (Accepted/In press) In : Computer Methods in Biomechanics and Biomedical Engineering. p. 1-11 11 p.

Research output: Contribution to journalArticle

Brain
Strain rate
Cell death
Loads (forces)
9 Citations (Scopus)

Implementation and validation of a three-dimensional plasticity-based deformation model for orthotropic composites

Hoffarth, C., Rajan, S., Goldberg, R. K., Revilock, D., Carney, K. S., DuBois, P. & Blankenhorn, G., Dec 1 2016, In : Composites Part A: Applied Science and Manufacturing. 91, p. 336-350 15 p.

Research output: Contribution to journalArticle

Plasticity
Constitutive models
Composite materials
Stress-strain curves
Laminates
30 Citations (Scopus)

The influence of microencapsulated phase change material (PCM) characteristics on the microstructure and strength of cementitious composites: Experiments and finite element simulations

Aguayo, M., Das, S., Maroli, A., Kabay, N., Mertens, J. C. E., Rajan, S., Sant, G., Chawla, N. & Neithalath, N., Oct 1 2016, In : Cement and Concrete Composites. 73, p. 29-41 13 p.

Research output: Contribution to journalArticle

Phase change materials
Microstructure
Composite materials
Experiments
Cements
2015

Multiphysics design optimization model for structural walls incorporating phase-change materials

Stockwell, A., Neithalath, N. & Rajan, S., Mar 4 2015, In : Engineering Optimization. 47, 3, p. 308-327 20 p.

Research output: Contribution to journalArticle

Phase Change Material
Phase change materials
Multiphysics
Optimization Model
Costs
2014
6 Citations (Scopus)

Enhancements to modeling dry fabrics for impact analysis

Deivanayagam, A., Vaidya, A. & Rajan, S., May 1 2014, In : Journal of Aerospace Engineering. 27, 3, p. 484-490 7 p.

Research output: Contribution to journalArticle

Energy absorption
Ballistics
Constitutive models
Propulsion
Strain rate
31 Citations (Scopus)

Finite element modeling of ballistic impact on multi-layer Kevlar 49 fabrics

Zhu, D., Vaidya, A., Mobasher, B. & Rajan, S., 2014, In : Composites Part B: Engineering. 56, p. 254-262 9 p.

Research output: Contribution to journalArticle

Ballistics
Strain rate
Subroutines
Constitutive models
NASA
15 Citations (Scopus)
Phase change materials
Concretes
Finite element method
energy
energy flow
2013
37 Citations (Scopus)

Long-term changes in the material properties of brain tissue at the implant-tissue interface

Sridharan, A., Rajan, S. & Muthuswamy, J., Dec 2013, In : Journal of Neural Engineering. 10, 6, 066001.

Research output: Contribution to journalArticle

Microelectrodes
Brain
Materials properties
Tissue
Elastic moduli
42 Citations (Scopus)

Mechanical behaviors of Kevlar 49 fabric subjected to uniaxial, biaxial tension and in-plane large shear deformation

Zhu, D., Mobasher, B., Vaidya, A. & Rajan, S., Jan 24 2013, In : Composites Science and Technology. 74, p. 121-130 10 p.

Research output: Contribution to journalArticle

Shear deformation
Poisson ratio
Ballistics
Kevlar 49
Image analysis
2012
15 Citations (Scopus)

Non-contacting strain measurement for cement-based composites in dynamic tensile testing

Zhu, D., Mobasher, B. & Rajan, S., Feb 2012, In : Cement and Concrete Composites. 34, 2, p. 147-155 9 p.

Research output: Contribution to journalArticle

Strain measurement
Tensile testing
Strain rate
Cements
Composite materials
33 Citations (Scopus)

Strain rate and gage length effects on tensile behavior of Kevlar 49 single yarn

Zhu, D., Mobasher, B., Erni, J., Bansal, S. & Rajan, S., Nov 2012, In : Composites Part A: Applied Science and Manufacturing. 43, 11, p. 2021-2029 9 p.

Research output: Contribution to journalArticle

Strain gages
Yarn
Strain rate
Gages
Tensile strength
2011
28 Citations (Scopus)

Characterization of Dynamic Tensile Testing Using Aluminum Alloy 6061-T6 at Intermediate Strain Rates

Zhu, D., Mobasher, B., Rajan, S. & Peralta, P., Nov 1 2011, In : Journal of Engineering Mechanics. 137, 10, p. 669-679 11 p.

Research output: Contribution to journalArticle

Tensile testing
Strain rate
Aluminum alloys
Failure modes
Testing
80 Citations (Scopus)

Dynamic Tensile Testing of Kevlar 49 Fabrics

Zhu, D., Mobasher, B. & Rajan, S., Mar 2011, In : Journal of Materials in Civil Engineering. 23, 3, p. 230-239 10 p.

Research output: Contribution to journalArticle

Tensile testing
Strain rate
Image analysis
Dilatometers
Stress-strain curves
54 Citations (Scopus)

Experimental study and modeling of single yarn pull-out behavior of kevlar® 49 fabric

Zhu, D., Soranakom, C., Mobasher, B. & Rajan, S., Jul 2011, In : Composites Part A: Applied Science and Manufacturing. 42, 7, p. 868-879 12 p.

Research output: Contribution to journalArticle

Yarn
Shear strength
Kevlar 49
Analytical models
Friction
48 Citations (Scopus)
Tensile testing
Modal analysis
Strain rate
Hydraulics
High speed cameras
Acoustics
Decomposition
Linear equations
Finite element method
2010
92 Citations (Scopus)

Numerical simulation of ceramic composite armor subjected to ballistic impact

Krishnan, K., Sockalingam, S., Bansal, S. & Rajan, S., Dec 2010, In : Composites Part B: Engineering. 41, 8, p. 583-593 11 p.

Research output: Contribution to journalArticle

Armor
Ballistics
Computer simulation
Composite materials
Projectiles
2009
27 Citations (Scopus)

Development of fabric constitutive behavior for use in modeling engine fan blade-out events

Bansal, S., Mobasher, B., Rajan, S. & Vintilescu, I., 2009, In : Journal of Aerospace Engineering. 22, 3, p. 249-259 11 p.

Research output: Contribution to journalArticle

Fans
Engines
Constitutive models
Propulsion
Strain rate
60 Citations (Scopus)

Development of reliable modeling methodologies for engine fan blade out containment analysis. Part II: Finite element analysis

Stahlecker, Z., Mobasher, B., Rajan, S. & Pereira, J. M., Mar 2009, In : International Journal of Impact Engineering. 36, 3, p. 447-459 13 p.

Research output: Contribution to journalArticle

Fans
Constitutive models
Engines
Finite element method
Ballistics
70 Citations (Scopus)

Development of reliable modeling methodologies for fan blade out containment analysis - Part I: Experimental studies

Naik, D., Sankaran, S., Mobasher, B., Rajan, S. & Pereira, J. M., Jan 2009, In : International Journal of Impact Engineering. 36, 1, p. 1-11 11 p.

Research output: Contribution to journalArticle

Fans
Constitutive models
Energy absorption
Projectiles
Ballistics
2008

Two-level parallelization for finite-element based design optimization via case studies

Rajan, S., Belegundu, A. D., Damle, A. S. & Lau, D., Mar 2008, In : Optimization and Engineering. 9, 1, p. 69-93 25 p.

Research output: Contribution to journalArticle

Shape optimization
Parallelization
Topology Optimization
Shape Optimization
Finite Element
2006
3 Citations (Scopus)

General implementation of multilevel parallelization in a gradient-based design optimization algorithm

Rajan, S., Belegundu, A. D., Damle, A. S., Lau, D. & St.Ville, J., Sep 2006, In : AIAA Journal. 44, 9, p. 1993-2001 9 p.

Research output: Contribution to journalArticle

Cluster computing
Product design
Resource allocation
Scalability
Design optimization
39 Citations (Scopus)

Modeling of multilayer composite fabrics for gas turbine engine containment systems

Sharda, J., Deenadayalu, C., Mobasher, B. & Rajan, S., 2006, In : Journal of Aerospace Engineering. 19, 1, p. 38-45 8 p.

Research output: Contribution to journalArticle

Gas turbines
Multilayers
Turbines
Composite materials
Steel
29 Citations (Scopus)

Refractive change induced by the LASIK flap in a biomechanical finite element model

Deenadayalu, C., Mobasher, B., Rajan, S. & Hall, G. W., Mar 2006, In : Journal of Refractive Surgery. 22, 3, p. 286-292 7 p.

Research output: Contribution to journalArticle

Laser In Situ Keratomileusis
Cornea
Finite Element Analysis
Elastic Modulus
Intraocular Pressure
2004
11 Citations (Scopus)

Design optimization of discrete structural systems using MPI-enabled genetic algorithm

Rajan, S. & Nguyen, D. T., Nov 2004, In : Structural and Multidisciplinary Optimization. 28, 5, p. 340-348 9 p.

Research output: Contribution to journalArticle

Message Passing Interface
Message passing
Genetic algorithms
Genetic Algorithm
Hardware

Optimal design of engineering systems using MPI-enabled genetic algorithm

Rajan, S., Nguyen, D. T., Deshpande, M. D. & Harrell, L., 2004, In : Computer Assisted Mechanics and Engineering Sciences. 11, 2-3, p. 155-165 11 p.

Research output: Contribution to journalArticle

Message passing
Systems engineering
Interfaces (computer)
Genetic algorithms
Hardware
2002
2 Citations (Scopus)

Inverse design techniques for improving composite prosthetic devices

Yu, S. H., St. Ville, J. A. & Rajan, S., Sep 2002, In : Engineering Optimization. 34, 5, p. 427-443 17 p.

Research output: Contribution to journalArticle

Prosthetics
Composite
Material Properties
Finite Element Model
Constrained Least Squares
2000
22 Citations (Scopus)

Robust genetic algorithm for structural optimization

Chen, S. Y. & Rajan, S., Oct 2000, In : Structural Engineering and Mechanics. 10, 4, p. 313-336 24 p.

Research output: Contribution to journalArticle

Structural optimization
Genetic algorithms
Dynamic loads
Topology
1999
4 Citations (Scopus)

Cost-based design of residential steel roof systems: a case study

Rajan, S., Mobasher, B., Chen, S. Y. & Young, C., Aug 1999, In : Structural Engineering and Mechanics. 8, 2, p. 165-180 16 p.

Research output: Contribution to journalArticle

Roofs
Steel
Costs
Testing
Bending moments
8 Citations (Scopus)

Use of Fracture Mechanics and Shape Optimization for Component Designs

Gani, L. & Rajan, S., Feb 1999, In : AIAA Journal. 37, 2, p. 255-260 6 p.

Research output: Contribution to journalArticle

Shape optimization
Fracture mechanics
Fatigue of materials
Mesh generation
Geometry
1998
19 Citations (Scopus)

Improving the efficiency of genetic algorithms for frame designs

Chen, S. Y. & Rajan, S., 1998, In : Engineering Optimization. 30, 3-4, p. 281-307 27 p.

Research output: Contribution to journalArticle

Genetic algorithms
Genetic Algorithm
Chromosomes
Schema
Steel
Plastics
Nonlinear programming
Product design
Microelectronics
Packaging
1996
3 Citations (Scopus)

Toward a practical design optimization tool

Rajan, S., Chin, S. W. & Gani, L., Jul 1996, In : Microcomputers in Civil Engineering. 11, 4, p. 259-274 16 p.

Research output: Contribution to journalArticle

DOS
Mesh generation
Computer operating systems
Shape optimization
Personal computers
2 Citations (Scopus)

Toward a practical design optimization tool

Rajan, S., Chin, S. W. & Gani, L., 1996, In : Computer-Aided Civil and Infrastructure Engineering. 11, 4, p. 259-274 16 p.

Research output: Contribution to journalArticle

DOS
Mesh generation
Computer operating systems
Shape optimization
Personal computers
1995
200 Citations (Scopus)

Sizing, shape, and topology design optimization of trusses using genetic algorithm

Rajan, S., Oct 1995, In : Journal of structural engineering New York, N.Y.. 121, 10, p. 1480-1487 8 p.

Research output: Contribution to journalArticle

Trusses
Genetic algorithms
Topology
Boundary conditions
Design optimization
1994
4 Citations (Scopus)

Automated design tool for examining microelectronic packaging design alternatives

Chin, S. W., Rajan, S., Nagaraj, B. K. & Mahalingam, M., Feb 1994, In : IEEE transactions on components, packaging, and manufacturing technology. Part B, Advanced packaging. 17, 1, p. 76-82 7 p.

Research output: Contribution to journalArticle

Microelectronics
Packaging
Nonlinear programming
Finite element method
8 Citations (Scopus)

Estimation of pavement-layer moduli using nonlinear optimization technique

Hossain, M., Zaniewski, J. & Rajan, S., 1994, In : Journal of Transportation Engineering. 120, 3, p. 376-393 18 p.

Research output: Contribution to journalArticle

Pavements
data processing program
Computer program listings
evaluation
Values
2 Citations (Scopus)

Methodology for automated design of microelectronic packages

Rajan, S., Sarihan, V. & Mahalingam, M., Dec 1994, In : Journal of Electronic Packaging, Transactions of the ASME. 116, 4, p. 274-281 8 p.

Research output: Contribution to journalArticle

Microelectronics
Nonlinear programming
Packaging
Finite element method
Electronics packaging
1993

The construction of sutureless cataract incision and the management of corneal astigmatism

Hall, G. W., Krischer, C., Mobasher, B. & Rajan, S., 1993, In : Current Opinion in Ophthalmology. 4, 1, p. 33-38 6 p.

Research output: Contribution to journalArticle

Astigmatism
Cataract Extraction
Mathematics
Cataract
Theoretical Models
1992
6 Citations (Scopus)

Shape optimal design methodology for packaging design

Rajan, S., Nagaraj, B. & Mahalingam, M., Dec 1992, In : Journal of Electronic Packaging, Transactions of the ASME. 114, 4, p. 461-466 6 p.

Research output: Contribution to journalArticle

Packaging
Electronics packaging
Aerospace industry
Nonlinear programming
Automotive industry