Key Personnel

ASD TeamASD's Arya Majed (l) and Ed Henkel (2010)

Arya Majed, Ph.D.

Chief, Structural Dynamics/Advanced Methods

Arya has led the structural dynamics and advanced methods at Applied Structural Dynamics (ASD), Inc for the past 12 years. He has 24 years of experience in structural dynamics, design, and testing of aerospace, mechanical, civil, and turbomachinery systems. His expertise/experience includes nonlinear coupled loads analyses, random vibration/vibro-acoustic analyses, contact/separation analyses, rotordynamics of turbomachinery, multibody dynamics, component-mode synthesis, design/analysis of isolation systems, testing, and test/analysis correlation.

His methods advancements in nonlinear coupled loads analysis, contact/separation, multibody dynamics, and dynamic math model reduction have resulted in significant improvements to the prior state-of-the-art and have been adopted by NASA, DoD, associate contractors, and general purpose finite element programs (for details, see ASD Advanced Methods). He is one of the principal developers behind ASD’s commercially available software package, ASD/CLAS, utilized by major contractors such as Lockheed Martin to conduct mission critical analyses including Shuttle/payloads nonlinear transient coupled loads analyses.

Prior to joining ASD, Arya was a structural dynamics consultant to contractors including Boeing, EADS, and Spacehab. Prior to that, he was the Engineering Manager of the Loads & Dynamics group at Boeing/Houston, in charge of Space Shuttle/payloads Verification Coupled Loads Analyses.

Arya is the author of numerous technical papers and reports and holds a Ph.D. in Mechanical Engineering, specializing in structural dynamics, from Rice University, Houston, Texas. He received his B.S. in Mechanical Engineering from Texas A&M University, College Station, Texas, and M.S. in Mechanical Engineering from University of Southern California.

Ed Henkel

Chief Engineer

Ed has served as ASD’s Chief Engineer for the past 7 years. He has 37 years of experience in structural dynamics, design, and testing of aerospace and mechanical systems. Ed is an industry recognized pioneer, having developed the “Henkel-Mar” launch vehicle/pad separation method. Henkel-Mar was a significant improvement over the prior pad separation methods and was quickly adopted by NASA, DoD, and associate contractors. It is utilized by major launch vehicle programs including the Space Shuttle, Titan, Atlas, Delta, and newer programs including Falcon.

Ed also pioneered the nonlinear trunnion friction coupled loads analysis capability incorporating sliding component interfaces and stick/slip transient effects. This method was utilized for mission critical Verification Loads Cycles for Air Force payloads manifested on the Space Shuttle (see ASD Advanced Methods). He has made major contributions to ASD’s commercially available software package, ASD/CLAS, utilized by major contractors such as Lockheed Martin to conduct mission critical analyses including Shuttle/payloads nonlinear transient coupled loads analyses.

Prior to joining ASD, Ed was the Engineering Manager for the Boeing/Houston Loads, Dynamics, and Stress groups in charge of Space Shuttle Cargo Integration Verification Coupled Loads Analyses. He is a Charter member of the Space Shuttle Cargo Integration structural analysis function. He began his career with the finite element math modeling of the Space Shuttle vehicle, assembly of vehicle dynamic math models, execution of coupled loads analyses to support the cargo integration effort, support to DoD payloads, and later, the International Space Station logistics Cargo Integration onto the Space Shuttle.

Ed has authored/co-authored a number of technical papers. He received his B.S. in Aerospace Engineering in 1972 and his M.S. in Interdisciplinary Engineering in 1973, both from Texas A&M University, College Station, Texas.

Kevin Partin

Chief, Computational Methods/Software Development

Kevin’s expertise/experience is in development of highly efficient engineering analysis software and processes; performance of coupled-loads analyses; and high-performance technical computing. He is the chief software developer of the industry’s most powerful and efficient coupled loads analysis software package (see ASD/CLAS). He has 24 years of experience in computational methods, high performance computing, and enterprise/commercial software development.

Prior to joining ASD, Kevin was the developer of the coupled loads analysis software package currently utilized by Boeing/Houston for Space Shuttle/payloads Verification Coupled Loads Analyses. Kevin holds a B.S. in Aerospace Engineering from University of Texas at Austin and a Masters of Science in Mathematics from the University of Houston - Clear Lake.