Overview
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Mehrdaad Ghorashi
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University of Southern Maine, Gorham, USA
Broadens readers’ understanding of the nonlinear static and dynamic response of composite beams, required in many applications such as helicopter rotor blades and wind turbines, through comprehensive and step-by-step analysis
Provides graduated analyses of phenomena beginning with the fundamental (static, linear, isotropic, passive and clamped) progressing through the complex (dynamic, nonlinear, composite, with actuators and articulated)
Models both clamped and hinged rotating beams
Includes analysis of beams with embedded active fiber composites
Includes supplementary material: sn.pub/extras
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Table of contents (8 chapters)
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Back Matter
Pages 213-227
About this book
This book presents a comprehensive study of the nonlinear statics and dynamics of composite beams and consists of solutions with and without active elements embedded in the beams. The static solution provides the initial conditions for the dynamic analysis. The dynamic problems considered include the analyses of clamped (hingeless) and articulated (hinged) accelerating rotating beams. Two independent numerical solutions for the steady state and the transient responses are presented. The author illustrates that the transient solution of the nonlinear formulation of accelerating rotating beam converges to the steady state solution obtained by the shooting method. Other key areas considered include calculation of the effect of perturbing the steady state solution, coupled nonlinear flap-lag dynamics of a rotating articulated beam with hinge offset and aerodynamic damping, and static and dynamic responses of nonlinear composite beams with embedded anisotropic piezo-composite actuators. The book is intended as a thorough study of nonlinear elasticity of slender beams and is targeted to researchers, graduate students, and practicing engineers in the fields of structural dynamics, aerospace structures, and mechanical engineering.
Authors and Affiliations
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University of Southern Maine, Gorham, USA
Mehrdaad Ghorashi
About the author
Dr.
Mehrdaad Ghorashi is a Professional Engineer (P.E.) in the state of Maine and a
member of the American Society of Mechanical Engineers (ASME). He is also a
certified Program Evaluator (PEV) for the Accreditation Board of Engineering
and Technology (ABET) on behalf of the ASME. Dr. Ghorashi has a B.Sc., an
M.Sc., and a Ph.D. in Mechanical Engineering from Sharif University of
Technology in Tehran, an M.Sc. from Institute for Research in Planning and
Development in Tehran, and a Ph.D. in Mechanical Engineering from Carleton
University in Ottawa. He has served as a full time faculty member in Sharif
University of Technology and later in University of Southern Maine (his current
position). Dr. Ghorashi has 26 journal and 29 conference publications in
various topics including vibration analysis and control of linear and nonlinear
systems, application of shape memory alloys as actuators, nonlinear rigid body
dynamics (with applications in ships and helicopter blades), elasto-dynamic
analysis of composite helicopter blades, structural design using variational
asymptotic and finite element methods, and limit state analysis of structures.
Dr. Ghorashi is a recipient of the Alexander Graham Bell Canada Graduate
Scholarship Award (CGS), Natural Sciences and Engineering Research Council of
Canada (NSERC), and the J.Y. and E.W. Wong Research Award in Mechanical/Aerospace
Engineering, Faculty of Graduate Studies and Research, Carleton University. He
has also been recognized as the Best Professor in the Faculty of Engineering
and Design in 2005-06 by the Carleton Student Engineering Society and a
University Distinguished Professor (Excellence in Teaching Award) in 1998 in
Sharif University of Technology. Dr. Ghorashi has been a postdoctoral fellow in
the Department of Mechanical and Aerospace Engineering, Carleton University,
where he was a member of the Rotorcraft Research Group. He has also been a
visiting research scholar in the Center of Intelligent Material Systems and
Structures, Virginia Polytechnic Institute and State University in Blacksburg,
in 2002-03. His industrial experience include serving as the Manager of
Research and Development Department of Iran Vanet (Mazda) Co. and the Manager
of the Quality Control Department in Indamine Shock Absorber Mfg. Co. in
Tehran.
