1,751,898 research outputs found
Experimental determination of the structure of shock waves in fluid flow through collapsible tubes with application to the design of a flow regulator
No full textThesis: Mech. E., Massachusetts Institute of Technology, Department of Mechanical Engineering, 1979Includes bibliographical references.by Ifiyenia Kececioglu.Mech. E.Mech. E. Massachusetts Institute of Technology, Department of Mechanical Engineerin
Analysis and design of a rotary compressor
No full textThesis: B.S., Massachusetts Institute of Technology, Department of Mechanical Engineering, 1978Bibliography: leaf 67.by Peter Cheimets.B.S.B.S. Massachusetts Institute of Technology, Department of Mechanical Engineerin
Summary of Research 1997, Department of Mechanical Engineering
Full text linkThe views expressed in this report are those of the authors and do not reflect the official policy or position of the Department of Defense or the
U.S. Government.This report contains summaries of research projects in the Department of Mechanical Engineering. A list of recent publications is also
included which consists of conference presentations and publications, books, contributions to books, published journal papers, technical
reports, and thesis abstracts
Summary of Research 2000, Department of Mechanical Engineering
Full text linkThe views expressed in this report are those of the authors and do not reflect the official policy or position of the
Department of Defense or U.S. Government.This report contains project summaries of the research projects in the Department of Mechanical Engineering. A list of recent publications is also
included, which consists of conference presentations and publications, books, contributions to books, published journal papers, and technical reports.
Thesis abstracts of students advised by faculty in the Department are also included
Summary of Research 1996, Department of Mechanical Engineering
Full text linkThe views expressed in this report are those of the authors and do not reflect the official policy or position of the Department of Defense or the U.S.
Government.This report contains summaries of research projects in the Department of Mechanical Engineering. A list of recent publications is also included which consists of conference presentations and publications, books, contributions to books, published journal papers, technical reports, and thesis abstracts
Ultimate load analysis using finite element methods
No full textThesis: B.S., Massachusetts Institute of Technology, Department of Mechanical Engineering, 1978Includes bibliographical references.by Arthur P. Cimento.B.S.B.S. Massachusetts Institute of Technology, Department of Mechanical Engineerin
Offshore wind turbine nonlinear wave loads and their statistics
No full textThesis: Ph. D., Massachusetts Institute of Technology, Department of Mechanical Engineering, 2019Cataloged from PDF version of thesis.Includes bibliographical references (pages 83-86).Due to the large influence of lateral flexible vibrations on offshore wind turbine foundations and the higher natural frequencies of the offshore wind turbine foundation relative to the dominant frequencies of the linear wave load model, the modeling of the dynamic behavior of the foundation under nonlinear wave loads and analysis of their statistical characteristics have become an important issue for offshore wind turbine design. This thesis derives an approximate model of the nonlinear wave loads in the time domain by Fluid Impulse Theory, verifies it with a boundary element method software WAMIT and validates it with experimental measurements. The load level crossing rates and the load power spectral density is obtained in multiple sea states. The simulated nonlinear wave loads are applied as the forcing mechanism on the offshore wind turbine and its foundation, and the mudline bending moments are computed and compared with experimental measurements. The system identification is conducted by fitting the model with the experimental data using linear regression method. The analytical extreme and fatigue prediction of the offshore wind turbine system are derived and evaluated in waters of finite depth and in multiple seastates. Key words: Nonlinear wave loads, nonlinear wave loads statistics, system identification, extremes and fatigueFinancial support from MIT-NTNU energy initiative program and Statoilby Yu Zhang.Ph. D.Ph.D. Massachusetts Institute of Technology, Department of Mechanical Engineerin
Engineering program review report sample
No full textThe program assessment sample includes a program review report completed by the Department of Mechanical Engineering, College of Engineering
Abstract of a thesis on cotton manufacture and the ring frame
No full textThesis: B.S., Massachusetts Institute of Technology, Department of Mechanical Engineering, 1874Manuscript.B.S.B.S. Massachusetts Institute of Technology, Department of Mechanical Engineerin
Wave loads on offshore wind turbines
No full textThesis: S.M., Massachusetts Institute of Technology, Department of Mechanical Engineering, 2015.Cataloged from PDF version of thesis.Includes bibliographical references (page 65).Ocean energy is one of the most important sources of alternative energy and offshore floating wind turbines are considered viable and economical means of harnessing ocean energy. The accurate prediction of nonlinear hydrodynamic wave loads and the resulting nonlinear motion and tether tension is of crucial importance in the design of floating wind turbines. A new theoretical framework is presented for analyzing hydrodynamic forces on floating bodies which is potentially applicable in a wide range of problems in ocean engineering. The total fluid force acting on a floating body is obtained by the time rate of change of the impulse of the velocity potential flow around the body. This new model called Fluid Impulse Theory is used to address the nonlinear hydrodynamic wave loads and the resulting nonlinear responses of floating wind turbine for various wave conditions in a highly efficient and robust manner in time domain. A three-dimensional time domain hydrodynamic wave-body interaction computational solver is developed in the frame work of a boundary element method based on the transient free-surface Green-function. By applying a numerical treatment that takes the free-surface boundary conditions linearized at the incident wave surface and takes the body boundary condition satisfied on the instantaneous underwater surface of the moving body, it simulates a potential flow in conjunction with the Fluid Impulse Theory for nonlinear wave-body interaction problems of large amplitude waves and motions in time domain. Several results are presented from the application of the Fluid Impulse Theory to the extreme and fatigue wave load model: the time domain analysis of nonlinear dynamic response of floating wind turbine for extreme wave events and the time domain analysis of nonlinear wave load for an irregular sea state followed by a power spectral density analysis.by Yu Zhang.S.M
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