Engineering Professional Education

# Multidisciplinary Design Optimization

## AAE55000

Fall 2017

Days/Time: MWF / 9:30-10:20 am
Credit Hours: 3

Learning Objective:
To acquire basic knowledge about engineering design optimization techniques and newer techniques for multidisciplinary optimization; develop proper engineering design optimization problem statements; select which optimization method(s) is/are appropriate for a given application; solve multidisciplinary engineering design optimization problems using a computer and available software libraries/toolboxes (primarily Matlab and Excel); interpret solutions generated by an optimization routine.

Description:
This fast-paced, graduate-level course introduces the techniques of engineering design optimization, leading into topics for Multidisciplinary Design Optimization (MDO). The application of these techniques to solve engineering design problems is also presented. First, students are exposed to basic concepts about and implementations of numerical optimization techniques, assuming that the students have little or no knowledge of these topics. Second, students investigate approaches for multiobjective and multidisciplinary optimization based upon knowledge of the basic techniques.
Fall 2015 Syllabus

Topics Covered:
• Basic Concepts: Optimal Design Problem Formulation, Solution Existence and Uniqueness
• Functions of One Variable: Concepts and Newton's Method, Polynomial Fit and Golden Section Search
• Unconstrained Functions in N Variables: Zero-Order Methods, First-Order Methods, Scaling and Convergence, Conjugate Direction and Variable Metrics (DFP and BFGS), Newton's Method, Variable Scaling Issues
• Constrained Functions in N Variables - Sequential Unconstrained Minimization Techniques: Exterior Penalty Methods, Interior and Extended Interior Penalty Methods, Variable Penalty Function, Comparison of Penalty Methods, Constraint Scaling, Augmented Lagrange Method (ALM) for Equality Constraints, ALM for Inequality Constraints and Generalized ALM
• Linear Programming: Simplex Method
• Constrained Functions in N Variables - Direct Methods: Overview, Zero-Order Methods, Feasible Directions, Zoutendjik's Feasible Directions, Reduced Gradient, Sequential Quadratic Programming
• Global Optimization: Simulated Annealing, Nelder-Mead Simplex, Genetic Algorithm
• Multiobjective Optimization: Pareto Optimality, Global Function /Weighted Sum, Epsilon-Constraint or Gaming Approach , Min-Max, Goal Attainment
• Recent MDO Techniques: Approximations and Response Surface Methodology in MDO, problem decomposition strategies
• Final project discussion.

Prerequisites:
Computer programming skills sufficient to use available functions in Matlab. Knowledge of linear algebra, multivariate calculus, and numerical methods. Some knowledge of basic statics and strength of materials may help with example and homework problems.

Applied/Theory: 65/35

https://mycourses.purdue.edu/

Web Content:
Blackboard will contain: A link to my current course website, syllabus, grades, lecture notes, homework assignments, solutions, quizzes and message board.

Homework:
Course grade is wholly homework and project-based. There are several (usually 7) Blackboard-based assessments, a few (usually 3) longer homework assignments and one final project. All assignments are submitted via Blackboard.

Projects:
The final project requires students to identify a design optimization problem of their choosing and then develop and solve the resulting formulation using an appropriate algorithm. A short final report documents the project effort. The project can but is not required to be related to the students job. In previous semesters, the instructor has signed non-disclosure agreements for job-related projects requiring this; students considering projects that will require this protection should start the process for obtaining a signed NDA a soon as they identify the project topic.

Exams:
No exams. The homework assignments require fairly significant effort and replace mid-term exams. Similarly, the final project replaces a final exam.

Textbooks:
Official textbook information is now listed in the Schedule of Classes. NOTE: Textbook information is subject to be changed at any time at the discretion of the faculty member. If you have questions or concerns please contact the academic department.
Textbook: Multidiscipline Design Optimization; Garret N Vanderplaats, VR&D, ISBN:9780944956045

Computer Requirements:
ProEd minimum requirements; all projects and assessments include computer work. Students are required to write scripts in Matlab to call toolbox functions. Some assignments use Excel and Solver add-in. Each lecture will use handouts in Adobe Acrobat format; Acrobat or other *.pdf file reader is needed.

ProEd Minimum Requirements: view

Tuition & Fees: view

Other Requirements:
Students must have access to Matlab (Student version okay) with Optimization Toolbox and Excel with Solver add-in. Students have free access to Matlab via Purdue's Software Remote at https://goremote.ics.purdue.edu. The student version of Matlab is reasonably priced, if students want to purchase this. See The Mathworks, Inc. site: http://www.mathworks.com/academia/student_version/index.html

Fall 2017
Fall 2018
Fall 2019
Fall 2020
Fall 2021
Fall 2022

## CURRENT INSTRUCTOR(S)

William A. Crossley

Phone
765-496-2872

Email
crossley@purdue.edu

Office
Purdue University
Neil Armstrong Hall of Engineering