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This report presents reliable techniques for modeling extremely compliant structures. The research focuses on severe geometric nonlinearities associated with very large displacements and rotations. The solution requires two major modeling improvements: formulation of well-conditioned finite elements and development of specific control strategies for nonlinear step-by-step solution. Inherent in the physics of the structure, natural events condition the new finite elements. Associated event control directs the numerical solution to adhere closely to the true nonlinear structural response path. The numerical strategies are a simple extension of the trapezoidal rule for time integration and Newton iteration for nonlinear step-by-step solution. The result is extremely fast, efficient, and stable nonlinear structural simulation. A high level of computational robustness is essential for development of fully nonlinear substructured models. A local/global approach allows each substructure to have its own specialized local submodel and its own associated local solution strategy. A global model then integrates all the super-element representations of each diverse submodel. The local/global framework allows the nonlinear solution strategies to efficiently concentrate computational power where and when needed among the submodels. Code development and test problems focus primarily on compliant marine structures, where the need for robust, highly nonlinear simulation is so great.
Book Synopsis Local/global Approach to Nonlinear Simulation of Compliant Marine Structures by : Robert Felice Zueck
Download or read book Local/global Approach to Nonlinear Simulation of Compliant Marine Structures written by Robert Felice Zueck and published by . This book was released on 1997 with total page 404 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report presents reliable techniques for modeling extremely compliant structures. The research focuses on severe geometric nonlinearities associated with very large displacements and rotations. The solution requires two major modeling improvements: formulation of well-conditioned finite elements and development of specific control strategies for nonlinear step-by-step solution. Inherent in the physics of the structure, natural events condition the new finite elements. Associated event control directs the numerical solution to adhere closely to the true nonlinear structural response path. The numerical strategies are a simple extension of the trapezoidal rule for time integration and Newton iteration for nonlinear step-by-step solution. The result is extremely fast, efficient, and stable nonlinear structural simulation. A high level of computational robustness is essential for development of fully nonlinear substructured models. A local/global approach allows each substructure to have its own specialized local submodel and its own associated local solution strategy. A global model then integrates all the super-element representations of each diverse submodel. The local/global framework allows the nonlinear solution strategies to efficiently concentrate computational power where and when needed among the submodels. Code development and test problems focus primarily on compliant marine structures, where the need for robust, highly nonlinear simulation is so great.
Book Synopsis American Doctoral Dissertations by :
Download or read book American Doctoral Dissertations written by and published by . This book was released on 1996 with total page 872 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis International Journal of Offshore and Polar Engineering by :
Download or read book International Journal of Offshore and Polar Engineering written by and published by . This book was released on 1999 with total page 344 pages. Available in PDF, EPUB and Kindle. Book excerpt:
This monograph provides a general background to the modelling of a special class of offshore structures known as compliant structures. External forcing is resisted by buoyancy and tension forces which increase when the structure is slightly offset from its equilibrium. The technical development given in this book is presented in such a way as to highlight the adaptability of the modelling, and the reader is shown how the techniques described can be applied to a variety of different offshore structures.
Book Synopsis Nonlinear Dynamics of Compliant Offshore Structures by : Patrick Bar-Avi
Download or read book Nonlinear Dynamics of Compliant Offshore Structures written by Patrick Bar-Avi and published by Routledge. This book was released on 2017-12-04 with total page 181 pages. Available in PDF, EPUB and Kindle. Book excerpt: This monograph provides a general background to the modelling of a special class of offshore structures known as compliant structures. External forcing is resisted by buoyancy and tension forces which increase when the structure is slightly offset from its equilibrium. The technical development given in this book is presented in such a way as to highlight the adaptability of the modelling, and the reader is shown how the techniques described can be applied to a variety of different offshore structures.
(Cont.) surface-active material in ciliate cultures was significantly higher than in flagellate cultures, and all protozoan cultures were higher than the bacterial control. Common headspace vessels were then used to compare and contrast the affinity of protozoan and bacterial culture filtrates (
Book Synopsis The Effect of Protozoan Grazers on the Cycling of Polychlorinated Biphenyls (PCBs) in Marine Systems by : Elizabeth B. Kujawinski
Download or read book The Effect of Protozoan Grazers on the Cycling of Polychlorinated Biphenyls (PCBs) in Marine Systems written by Elizabeth B. Kujawinski and published by . This book was released on 2000 with total page 734 pages. Available in PDF, EPUB and Kindle. Book excerpt: (Cont.) surface-active material in ciliate cultures was significantly higher than in flagellate cultures, and all protozoan cultures were higher than the bacterial control. Common headspace vessels were then used to compare and contrast the affinity of protozoan and bacterial culture filtrates (
Book Synopsis Dissertation Abstracts International by :
Download or read book Dissertation Abstracts International written by and published by . This book was released on 1999 with total page 898 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Outlines the theoretical basis for modelling nonlinear dynamics in a range of compliant offshore structures, and details the application of the theory to the physical environment.
Book Synopsis Nonlinear Dynamics of Compliant Offshore Structures by : Patrick Bar-Avi
Download or read book Nonlinear Dynamics of Compliant Offshore Structures written by Patrick Bar-Avi and published by CRC Press. This book was released on 1997 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt: Outlines the theoretical basis for modelling nonlinear dynamics in a range of compliant offshore structures, and details the application of the theory to the physical environment.
The importance of accounting for nonlinear effects in offshore structures has increased due to their higher utilization and extended service lives. This text addresses new methods for advanced analysis of offshore structures developed during the 1990s.
Book Synopsis Nonlinear Analysis of Offshore Structures by : Bjørn Skallerud
Download or read book Nonlinear Analysis of Offshore Structures written by Bjørn Skallerud and published by . This book was released on 2002 with total page 348 pages. Available in PDF, EPUB and Kindle. Book excerpt: The importance of accounting for nonlinear effects in offshore structures has increased due to their higher utilization and extended service lives. This text addresses new methods for advanced analysis of offshore structures developed during the 1990s.
In recent years significant advances have been made in the development of methods and modeling procedures for structural assessment of marine structures. Various assessment methods are incorporated in the methods used to analyze and design efficient ship structures, as well as in the methods of structural reliability to be used to ensure the safety
Book Synopsis Advances in Marine Structures by : Carlos Guedes Soares
Download or read book Advances in Marine Structures written by Carlos Guedes Soares and published by CRC Press. This book was released on 2011-03-14 with total page 732 pages. Available in PDF, EPUB and Kindle. Book excerpt: In recent years significant advances have been made in the development of methods and modeling procedures for structural assessment of marine structures. Various assessment methods are incorporated in the methods used to analyze and design efficient ship structures, as well as in the methods of structural reliability to be used to ensure the safety
Book Synopsis Proceedings of the 11th International Ship and Offshore Structures Congress by : Ping Han Hsu
Download or read book Proceedings of the 11th International Ship and Offshore Structures Congress written by Ping Han Hsu and published by . This book was released on 1991 with total page 680 pages. Available in PDF, EPUB and Kindle. Book excerpt: