Optimization of three dimensional combined truss/frame structures
Bender, Gregory L.
Shin, Young S.
MetadataShow full item record
A finite element code is developed for analysis and design of three-dimensional truss and frame structures. Structures are designed for minimum weight subject to constraints on: member stresses, Euler buckling, shell buckling, joint displacements and system natural frequencies. Structures are optimized with respect to member size and strength configuration. The finite element code may be used for analysis only, or may be coupled to an optimizer of the user's choice. The displacement method is used for static analysis, and structural natural frequencies are calculated via the subspace iteration method. Flexibility is provided for expansion to other than tubular frame elements, and provisions are made for the future growth to panel and other types of structural elements. Documentation is provided to facilitate use of the code. A User's manual is presented with examples and results. An explanation of how this code may be couple to an optimizer is also provided.
RightsThis publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.
Showing items related by title, author, creator and subject.
Musgrave, Preston C. (Monterey, CA; Naval Postgraduate School, 2022-06);In 2019, the Naval Facilities Engineering Command (NAVFAC) deployed its first smart grid infrastructure in Norfolk, VA, enabling shore commands to meet energy goals set by the secretary of the Navy. However, with increased ...
Development of a computer program for the testing and evaluation of numerical optimization techniques Fitzgerald, James Edward, III (Monterey, California. Naval Postgraduate School, 1982-06);A three dimensional finite element code is written for truss analysis and design. Trusses may be designed for minimum weight subject to constraints on: member stresses, Euler buckling, joint displacements and system natural ...
Freeman, Will; Karunasiri, Gamani (SPIE, 2009);In this paper, electron transport properties of terahertz (THz) step well quantum cascade laser structures are analyzed. These types of structures can allow for the radiative and LO-phonon transitions to be placed within ...