By Carl Q Howard; Benjamin S Cazzolato
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Additional resources for Acoustic analyses using Matlab® and Ansys®
Note that only the nodal displacements of the acoustic elements that are normal to the structure should be coupled, as it is only the out-of-plane motion of the structure that generates acoustic pressure in the fluid, as the in-plane motion of the structure does not generate any acoustic pressure in the fluid. Hence, the fluid and the structure must retain independent displacement DOFs for motions that are tangential to the fluid–structure interaction surface, which can be difficult to model. These systems are modeled by defining separate but coincident nodes for the fluid and the structure at the fluid–structure interaction interface, and then coupling the appropriate nodal displacement DOFs, or defining mathematical relationships for the nodal displacement motion of the structure and fluid, to define the compatibility of displacements that are normal to the fluid– structure interaction surface.
440 510 515 534 558 581 592 633 Foreword Although ANSYS Mechanical has supported acoustic and vibroacoustic analyses for more than two decades, it was not until relatively recently that the demand for performing these simulations has grown appreciably. Over the past several years, noise considerations for rotating machinery, passenger comfort in vehicles, and acoustic performance of tablets and other ubiquitous electronic devices have taken a more dominant role in their respective design processes.
We trust that you will find this book a useful resource for learning how to conduct acoustic analyses using ANSYS and MATLAB® and will enable you to solve your own acoustic problems. Carl Howard and Ben Cazzolato Adelaide MATLAB® and Simulink® are registered trademarks of The MathWorks, Inc. For product information, please contact: The MathWorks, Inc. , for the numerous technical discussions; Sam Nardella; Srini Bandla, Jindong Yang, and Greg Horner at LEAP Australia, for technical assistance; Boyin Ding for proofreading the book; Colin Hansen, our mentor, for encouraging us to write this book; Chenxi Li, for assistance with the micro-perforated panel material; and John Pearse, for hosting the first author at the University of Canterbury while writing this book.
Acoustic analyses using Matlab® and Ansys® by Carl Q Howard; Benjamin S Cazzolato