Jorgen S. Bergstrom, Ph.D.

Principal Engineer

Dr. Jorgen Bergstrom is a Principal Engineer at Veryst Engineering.  Dr. Bergstrom consults primarily in the modeling, testing, and failure analysis of mechanical behavior of materials, particularly polymeric materials.  His consulting work includes sensor design and analysis, polymer gaskets and hoses, injection molded components, and polymer films.  He has worked with the National Institute of Health and Department of Defense on the modeling and prediction of polymer behavior.  He has developed world-recognized models for simulating the large deformation, rate-dependent, nonlinear behavior of elastomers, thermoplastics, and thermosets.  In addition to theoretical modeling, Dr. Bergstrom has significant experience with experimental material characterization, including mechanical testing, calorimetry, microscopy, chromatography, and spectroscopy.

Dr. Bergstrom also works with particle and fiber-filled polymer composites.  He has additional expertise in the behavior of brittle materials such as ceramics, ice, and rocks.  This expertise includes research in crack nucleation, crack coalescence, and shear fault formation in brittle solids.  Dr. Bergstrom also specializes in different computer simulation techniques, including finite element modeling, and advanced material model development.  Dr. Bergstrom's expertise is applicable to problems in material processing, manufacturing simulation, product design, and failure analysis.


Ph.D., Mechanical Engineering, Massachusetts Institute of Technology, 1999

M.S., Mechanical Engineering, Thayer School of Engineering, Dartmouth College, 1995

B.S., Mechanical Engineering, Thayer School of Engineering, Dartmouth College, 1993

B.S., Mechanical Engineering, Royal Institute of Technology, Stockholm, Sweden, 1992

Selected Publications

"An advanced Thermomechanical Constitutive Model for UHMWPE," Int. J. Structural Changes in Solids, Vol. 2, No. 1, pp. 31-39, 2010 (with J.E. Bischoff).

"Computational Modeling of Dough Sheeting and Physical Interpretation of the Non-Linear Rheological Behavior of Wheat Flour Dough," J. Flood Engineering, Vol. 100, pp. 278-288, 2010 (with S. Chakrabarti-Bell, E. Lindskog, and T. Sridhar).

“Modeling of the Dynamic Thermomechanical Response of Elastomers,” Tire Science and Technology, Vol. 33, No. 2, pp. 120-134, 2005.

“A Constitutive Model for Predicting the Large Deformation Thermomechanical Behavior of Fluoropolymers,” Mechanics and Materials, Vol. 37, pp. 899-913, 2005 (with L.B. Hilbert).

“An Augmented Hybrid Constitutive Model for Simulation of Uploading and Cyclic Loading Behavior of Conventional and Highly Crosslinked UHMWPE,” Biomaterials, Vol. 25, pp. 2171-2178, 2004 (with C.M. Rimnac and S.M. Kurtz).

“Modeling and Mechanical Analysis of Fluoropolymer Components,” In: Fluoropolymers Applications in Chemical Processing Industries. Sina Ebnesajjad (ed.), Plastics Design Library, Williams Andrew Publishing, 2004.

“Constitutive Modeling of the Time-dependent and Cyclic Loading of Elastomers and Application to Soft Biological Tissues,” Mechanics of Materials, Vol. 33, pp. 523-530, 2001 (with M.C. Boyce).

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