MENG 2110 Lecture - Types of Problems

MENG 2110. Class 2-What is engineering design? Why are engineering “design” problems different than other problems (textbook ones in other classes)? Textbook (non design problem): Find the diameter of required bolt to hold together two lapped pieces of steel subjected to a force of 1,000 N … There is only one answer: diameter = ….. MENG 2110 Class 2 What is engineering design? Why are engineering “design” problems different than other (textbook problems in other classes)? Design problem: Find a way (a concept) to hold together two lapped pieces of steel subjected to a force of 1,000 N … ANY IDEAS? …. Design problems have multiple solutions Types of mechanical engineering “design” problems: 1. Selection design: make a choice between different standard options (or components), …not the topic of this class… Example -> Other data: Expected “life” Thrust load Size of housing Types of mechanical engineering “design” problems: 2. Configuration design: make a choice about the location of components in space … a little bit in this class… Examples: - Design the location of electric wiring in a car (the wires needed are given as data, the location around frame and engine must be decided - location of instruments in a dashboard Types of mechanical engineering “design” problems: 3. Parametric design: Use computations to find the values of parameters for a system … not in this class, but in many other engineering science classes… Example: Design the size needed for a tank to keep a volume of 4 m3 of fluid (note that most parametric design problems are not fully defined, the engineering must find data, and make assumptions) -> Types of mechanical engineering “design” problems: 4. RE-design: make a new alternative, model, or variant of a “mature” product… Examples: - Design a “new” bicycle - Design a “new” hydraulic cylinder - Design of the “new” 2022 Toyota Corolla …. 5. Original design: create a new, non existing concept to solve a problem (the most challenging one, the one we start doing in this class) The breakdown of the whole DESIGN PROCESS (1) What we focus on in this class (1) The breakdown of the whole DESIGN PROCESS (2) What we focus on in this class (2) A LITTLE BIT ABOUT Project Planning (to be learned in detail in senior classes…)