| MAESTRO |
|
 |
|
|
-
|
_________________________________________________________________ |
| ::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::: |
| Important Information regarding US Export Control Regulations MAESTRO is subject to the United States Export Regulations, as administered by the Department of Commerce, Bureau of Industry Security. The software may not be used in or exported/re-exported to Cuba, Libya, North Korea, Sudan, Syria, or any country to which the United States embargoes goods. The same restriction applies to persons, no matter where they are located, that appear on the Table of Denial Orders, the Entity List, or the List of Specially Designated Nationals. By clicking on the button below, you hereby certify that you are not a national of Cuba, Libya, North Korea, Sudan, Syria, or any country to which the United States embargoes goods, nor do you appear on the Table of Denial Orders, the Entity List, or the List of Specially Designated Nationals. |
|
_________________________________________________________________ |
| ::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::: |
 |
| MAESTRO is a finite element analysis program for rationally-based analysis, evaluation, and structural optimization of ships, offshore structures, and other large complex thin-walled structures. The objective of any structural finite element analysis is to accurately determine the response of a structural system that is modeled with finite elements and subjected to given loads. MAESTRO accomplishes this objective through a single Windows-based graphical user interface that completely encompasses structural modeling (preprocessing), ship-based loading, finite element analysis, limit state evaluation, and post-processing. In short, MAESTRO is a knowledge based design tool specifically tailored to suit naval architects and their finite element analysis needs. The MAESTRO method of design is referred to as "rationally-based" because it includes, in each design cycle, all of the following: 1. For the complete structure, a rapid, "design-oriented" finite element analysis which uses elements that are exactly suited for preliminary design, as distinct from general purpose finite element programs which are more suited for analysis of details. 2. An explicit evaluation of all limit states (ultimate strength and unserviceability), at both levels (member level and "module", or multi-member level), for all load cases, thus establishing which limit states are currently critical (in the current design cycle) for each member, and by how much. 3. Formulation of the linearized limit state equations, which utilize partial safety factors in order to achieve a consistent degree of structural reliability. 4. Multi-objective optimization based on any combination of individual measures of merit (linear or nonlinear) such as structural weight, material cost, fabrication cost, and any other desired performance factors that are functions of the member size variables (plate thicknesses, web heights, flange breadths, etc.). Besides the limit state equations, the optimization can accommodate any number of designer-specified constraints, such as those relating to fabrication aspects or operational requirements. The MAESTRO Design System is comprised of six main modules: the Basic module with the Modeler and Static Analysis/Evaluation, MAESTRO Fine Mesh Analysis, MAESTRO Eigenvalue Solver, ALPS/Ulsap evaluation, ALPS/HULL, and the MAESTRO Nastran Translator. The MAESTRO Design System has four main capabilities: overall stress analysis, structural adequacy evaluation, structural design optimization and fine mesh stress analysis. The underlying theory of MAESTRO and a detailed description of its principal features are given in the book Ship Structural Design by Professor Owen Hughes, which constitutes the Theoretical Manual for the program. You can read about the features of each of the modules by selecting them from the Modules menu above. For detailed information on the entire MAESTRO system, please download MAESTRO.pdf. |
|
_________________________________________________________________ |
| :::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::: |
Maestro Base module
This module includes the graphical modeler for developing MAESTRO structural models and full post-processing capability. This includes full model viewing capability and generation of loads for input to the MAESTRO Analysis/Evaluation Solver. Post-processing includes such features as graphical display of loads, deflections, stresses, and failure evaluation results from the MAESTRO Analysis/Solver. The two central operations of MAESTRO, analysis and evaluation, are also performed by this module. This module completes a finite element analysis and structural integrity evaluation (failure modes and other limit states) of every member and every load case. The solver performs three integrated tasks:
|
 |
Fine Mesh Analysis
The MAESTRO Fine Mesh module allows the user to create refined 3-D FEA models of any portion of the MAESTRO model quickly. The user creates a group made up of elements from the "area of interest" then refines the group based on two options. The first option being the Top-down mode. In this mode, Fine Mesh Analysis applies displacements from the global analysis to the fine mesh model for boundary conditions. In the Embedded mode (the second option), Fine Mesh Analysis replaces the coarse mesh portion of the model with the fine mesh. |
Eigenvalues
MAESTRO can compute the natural frequency of the ship in either air or water. When the analysis is done in water, the added mass of the water is automatically applied to the wetted elements.. |
ALPS Ulsap
The features of ALPS/ULSAP include:
|
ALPS Hull
The features of ALPS/HULL include:
|
NASTRAN Translator
This module translates either the entire MAESTRO finite element model or a portion thereof into Nastran, including loads. Alternatively, Nastran models can be translated into MAESTRO (only Nastran geometry). |
| Link to DRS C3 |
|
|
