MSMS_Lec_01

MSMS_Lec_01 - CAD tools: NanoHUB COMSOL Applications:...

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Unformatted text preview: CAD tools: NanoHUB COMSOL Applications: Modeling and Simulation of Multidisciplinary Systems DYMOLA ECE595M SECOND Prof. Jason Vaughn Clark Complex engineered systems: systems: systems System of Systemsystems Hybrid of systems Hvolutionary systems Eybrid systems Evolutionary systems ME597K Spring Spring 2011 2011 jvclark@purdue.edu NEMS MEMS Lab on chip Robotics Auto Space System-level domains: System-level domains: Electrical, Mechanical, Electrical, Fluid Thermal, Mechanical, Thermal, Fluid Purpose of the course: Physical systems are becoming increasingly multidisciplinary. Design and development is now viewed as a problem in systems, Purpose of the course: Physical systems are becoming increasingly multidisciplinary. Design and development is now viewed as a problem in systems, requiring a systems perspective. This is because subsystem components designed by specialists often do not work as efficiently or as robustly as a comparable requiring a systems perspective. This is because subsystem components designed by specialists often do not work as efficiently or as robustly as a comparable system designed in a unified way. So today’s engineer must be technically competent beyond her or his core discipline. system designed in a unified way. So today’s engineer must be technically competent beyond her or his core discipline. Course outcomes: Upon completion of this course, the student will be able to: 1) create system-level multidisciplinary models using energy functions, Course outcomes: Upon completion of this course, the student will be able to: 1) create system-level multidisciplinary models using energy functions, virtual work, and constraints; 2) designing complex engineered systems in the form of differential algebraic equations; 3) numerically solve and assess the virtual work, and constraints; 2) designing complex engineered systems in the form of differential algebraic equations; 3) numerically solve and assess the reliability of the resulting system of DAEs. reliability of the resulting system of DAEs. Grading: Weekly problem sets Take-home midterm Final project Grading: Weekly problem sets // Take-home midterm // Final project Prerequisites: Advanced undergraduate or graduate standing. All majors welcome. Prerequisites: Advanced undergraduate or graduate standing. All majors welcome. 1 of 40 Today’s topics: Introduction to MSMS • Introduction – What MSMS is all about? – What are the course outcomes? – Simulation vs reality – What does the future hold for CAE? • Syllabus – Topics – Grading – Reference texts • COMSOL – Get up and running – Structural mechanics 2 of 40 Motivation: What MSMS is all about? • Modeling complex engineered systems – What is modeling? – What is simulation? – What are complex-engineered systems? • • • • Nonlinear systems Hybrid systems System of systems Evolutionary systems – What is system level? • Engineering domains – Electrical, mechanical, thermal, fluid, etc. 3 of 40 Motivation: What are the course outcomes? • Course outcomes – Create system-level multidisciplinary models • Energy functions • Virtual work • Constraints – Design and model complex-engineered systems with differential algebraic equations • DAE vs ODE – Integrating multidisciplinary tools • COMSOL (PDEs), SPICE (circuits), SUGAR (MEMS), SIMULINK (system control), GDS 4 of 40 Can you write down the analytical model < 5min? - Electrical domain Circuit - Eletromechanical domain Motor - Mechanical domain Rotational gears 3D spring pendulums Dampers 5 of 40 Motivation: Reality vs Animation vs Simulation • Animated complex-engineered system – A dancing car • Real complex-engineered system – The coolest energy transfer video of all time • Simulation – – – – – SPICE SUGAR NanoHUB SIMULINK COMSOL 6 of 40 Best energy transfer of all time! 601 attempts. 7 of 40 Animation uses qualitative physics 8 of 40 SPICE (Simulation Program with IC Emphasis) Netlist description of circuit element connections 9 of 40 SUGAR (SPICE for MEMS) Netlist description of electro-mechanical element connections 10 of 40 PSUGAR SUGAR with GUI input 11 of 40 SIMULINK 12 of 40 COMSOL example: Electromagnetic Inductor with magnetic field lines 13 of 40 COMSOL example: Fluid-Structure interaction Fluid-structure interaction 14 of 40 COMSOL example: chemical engineering Rotating mixer 15 of 40 COMSOL example: AC/DC module Inductance of a power inductor 16 of 40 COMSOL example: Heat transfer Temperature distribution of an IC package 17 of 40 COMSOL example: Acoustics Absorptive muffler 18 of 40 COMSOL example: MEMS module Electrostatically-actuated comb drive 19 of 40 COMSOL example: MEMS Piezoelectric shear actuated beam 20 of 40 COMSOL example: Quantum Mechanics Quantum dot 21 of 40 COMSOL example: RF module Microwave heating of food 22 of 40 COMSOL example: RF module Balanced patch antenna 23 of 40 COMSOL example: Structural mechanics 3D structure / fluid interaction 24 of 40 COMSOL example: Structural mechanics Hyperelastic seal 25 of 40 COMSOL example: Structural mechanics Blood vessel 26 of 40 Grading A+ = High quality work or do more than what is assigned. A = Do exactly what is assigned. A- = Poor quality assignments. B = Bad. Missing various amounts of work. C = Catastrophic performance. Did not show what was learned. Application Grading HW Quizzes Paper Presentation Weekly. On previous lecture. 8 weeks. Publishable. ppt version of paper. 27 of 40 Textbooks for reference only. Course material will be provided. • Principles of analytical system dynamics – By Richard A. Layton • Computer methods for ordinary differential equations and differential-algebraic equations – By Uri M. Ascher, Linda R. Petzold • Control of nonlinear differential algebraic equation systems – By Aditya Kumar, Prodromos Daoutidis 28 of 40 COMSOL: Get up and running now! • Places – MSEE189 – MSEE190 – ENAD302F • Start it up – Sun Rays machines • Type "grid comsol" in a terminal window – Linux machines • Type “comsol” – Windows machines • Run comsol 29 of 40 COMSOL: simple beginning • Start up COMSOL (e.g. Windows) Double-click this icon Then the model navigator window opens 30 of 40 COMSOL: simple beginning • Let’s try 2D structural mechanics Choose > Structural mechanics >> Plane stress >>> Nonlinear static Press OK 31 of 40 COMSOL: main drawing window Options Grid settings Set x and y spacing to 0.1 OK 32 of 40 COMSOL: draw structure Choose rectangle Then make a structure 33 of 40 COMSOL: create composite object Create composite object Choose all objects OK 34 of 40 COMSOL: Choose material properties Physics Subdomain settings Celect all Change Young’s modulus to 1e5 OK 35 of 40 COMSOL: Apply a fixed boundary Physics Boundary settings Fix a boundary Rx & Ry = 0 36 of 40 COMSOL: Apply boundary force Apply a load of 0.1N/m OK 37 of 40 COMSOL: Mesh it Mesh structure 38 of 40 COMSOL: Solve it Find solution 39 of 40 What does the future hold for complex systems? • Since you create the future, you tell me! • Homework – Watch MIT video “Looking ahead” • http://mitworld.mit.edu/video/215/ • Briefly summarize the speakers’ main points. – Watch MIT video “Innovation everywhere” • http://mitworld.mit.edu/video/327/ • Briefly summarize the speaker’s main points. – Think about 3 societal-scale problems. • Describe the problems? • Describe your engineered solutions? 40 of 40 ...
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