Blast Mitigation Team


Romesh Batra: High-performance multiscale mathematical and computational modeling of high strain rate, large strain, and elevated temperature phenomena

S.W. Case: Durability-based design and lifetime assessment of composite materials and structures

J.J. Lesko: Design, rapid manufacturing and characterization of structural composite systems

R.C. Moffitt: Polymer and composite processing


Goals

  • Develop inexpensive lightweight low-cost structures to safeguard civilian and defense assets against blast loads (thermo-mechanical shocks, high energy directed threats).
  • Identify anticipated threats and devise techniques to mitigate them.
  • Learn socio-economic and other factors (e.g. upbringing, education, job opportunities) that promote persons to engage in life-threatening events.
  • Educate and train personnel in identifying likely threatening events, evacuating people quickly, safely, and providing emergency medical help and counseling.

Current Project: Analysis of Injuries in Persons Wearing Soft Body Armor due to Impact Loads

Figure01

Simulation of a projectile impacting a soft body armor (Batra et al. (2007)

 

Figure01

Fig. from Roberts et al., JHU APL Tech. Digest (2005)

 

Figure01

Model of soft body armor,

skin, ribs and soft tissue behind ribs

 

Publication: G. M. Zhang, R. C. Batra and J. Zheng, Effect of Frame Size, Frame Type, and Clamping Pressure on the Ballistic Performance of Soft Body Armor, Composites B (in press, available online).

 

Project recently completed: Blast Resistant Light-Weight Laminated Composites


Objectives: Develop a science based tool to optimally design blast resistant marine composites.

Approach:  Use thermodynamically consistent material and geometric nonlinear theory of internal variables to account for energy dissipated due to different failure mechanisms, and determine optimum values of parameters.

Work Completed: Have developed, verified and validated a 3-D FE code to analyze transient finite deformations of a laminated composite structure subjected to explosive loads, and ascertained the effect of material, geometric and damage parameters on energy dissipated.

Relevance:  The developed mechanics  based tool will enable engineers design lightweight blast resistant structures.

Publications:

Dr. Batra's CV


Romesh C. Batra, PhD

Clifton C. Garvin Professor
Fellow - ASME, ASEE, AAM, SES, USACM

Google Scholar Profile

rbatra@vt.edu

Department of Biomedical Engineering and Mechanics (0219)
Norris Hall, Room 333-E, Virginia Tech
495 Old Turner Street
Blacksburg, VA 24061 


 


Blast Mitigation Team

Research Activities in the Computational Mechanics Lab (poster)

Awards

Feature from Virginia Tech Magazine

Summary of Results on Laminated Plates