Ph.D., Civil Engineering, University of Illinois (1982)

Professional Engineer, Virginia and Maryland.

Numerical and theoretical analysis of structural, geotechnical and applied mechanics problems. Specialties include finite element analysis of complex problems as listed below:
£ª Development of material models & finite element codes:
£ª Wave propagation in one- and two-phase media:
£ª Nonlinear Consolidation:
£ª Static and dynamic structural analysis:
£ª Heat transfer including phase changes:
£ª Deformation and performance of underground structures
     during construction and under static and dynamic loads

1989 to Present :
Comtec Research, Principal Engineer. Research and development of dynamic response of saturated soils and rocks. Development of computer programs for geo-structural problems. Consultant to consulting services for geotechnical and underground structural analysis.

1984 to 1989 :
Applied Research Associates, Inc., Capital Area Division, Senior Engineer. Research and analysis of structural dynamics, structure-medium interaction and stress wave propagation. Conduct static and dynamic finite element analysis of under-ground tunnels and large cavities. Develop mathematical models to represent behavior of rock materials.

1982 to 1984 :
Applied Research Associates, Inc., New England Division, Staff and Senior Engineer. Research and analysis in stress wave propagation in one- and two-phase materials and numerical modeling of blast induced liquefaction. Numerical analysis of deformation and stresses surrounding large underground compressed gas storage facilities in salt during construction and operation; response of frozen backfilled shafts to intense dynamic loadings; thermal analysis of underground heat sinks utilizing ice and frozen soil.