Multidisciplinary Optimization Branch Experience Using iSIGHT Software
نویسندگان
چکیده
The Multidisciplinary Optimization (MDO) Branch at NASA Langley Research Center is investigating frameworks for supporting multidisciplinary analysis and optimization research. An optimization framework can improve the design process while reducing time and costs. A framework provides software and system services to integrate computational tasks and allows the researcher to concentrate more on the application and less on the programming details. A framework also provides a common working environment and a full range of optimization tools, and so increases the productivity of multidisciplinary research teams. Finally, a framework enables staff members to develop applications for use by disciplinary experts in other organizations. Since the release of version 4.0, the MDO Branch has gained experience with the iSIGHT framework developed by Engineous Software, Inc. This paper describes experiences with four aerospace applications: (1) reusable launch vehicle sizing, (2) aerospike nozzle design, (3) low-noise rotorcraft trajectories, and (4) acoustic liner design. All applications have been successfully tested using the iSIGHT framework, except for the aerospike nozzle problem, which is in progress. Brief overviews of each problem are provided. The problem descriptions include the number and type of disciplinary codes, as well as an estimate of the multidisciplinary analysis execution time. In addition, the optimization methods, objective functions, design variables, and design constraints are described for each problem. Discussions on the experience gained and lessons learned are provided for each problem. These discussions include the advantages and disadvantages of using the iSIGHT framework for each case as well as the ease of use of various advanced features. Potential areas of improvement are identified.
منابع مشابه
Multidisciplinary Optimization for LHD Working Device Based on Isight
The design of the LHD working device is a complex problem, often related to multi-variables, multi-objective, nonlinear constraint. In this paper, MDO theory is proposed with 14t wheel loader as research target and Isight is as the multidisciplinary optimization platform combined Matlab, Solid work sand Simulation. The mathematical model of working device is established based on Matlab, and sin...
متن کاملAutomated Integrated Finite Element Analysis Using MSC.Nastran and SDRC/I-DEAS
The present work focus on showing how MSC.Nastran, as a Finite Element solver, when integrated to Computer Aided Engineering/Finite Element Analysis-system SDRC/I-DEAS could be used for multidisciplinary analysis and optimisation. Parametric solid models are used as a geometrical base for different downstream analysis applications during the analysis and optimisation, where the optimisation sof...
متن کاملMulti-Objective Structural Optimization of Wind Turbine Tower and Foundation Systems using Isight: A Process Automation and Design Exploration Software
1. Abstract Currently, wind turbine towers are being built to increasing heights in order to tap into higher and more consistent winds available at these heights. Additionally, increasingly large wind turbines are being deployed atop these towers in order to capture more energy. This trend of larger turbines being deployed at greater heights makes obtaining the most efficient and safe, or optim...
متن کاملResearch on Multi-objective Optimization Design of the UUV Shape Based on Numerical Simulation
The numerical simulation research of the Underwater Unmanned Vehicle (UUV) shell shape is carried out by applying the modern fluid dynamics numerical simulation technology. In the numerical simulation process, while focusing on the characteristics of the UUV shape, this treatise work properly with its computational model, computational domain, computational grid and boundary conditions. Based o...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 1999