1)What tools is/are available to define the relationship of design requirements with design specifications?
2)What are the available sources of information in this design? (From Figure 1 above)–or how would you search for information for this design.
3)List three activities or tools that can be used for the concept generation step. (From Figure 1 above)
4)List two tools selecting tools (from Figure 1)(Practice or review concept selection tools in your own)
5)List two activities related to Product Architectural (from Figure 1)
Mini Design Case – Arcmchair Design Homework Objective: Homework 3 objective is to apply engineering design process – Write briefly and neatly. Draw necessary diagrams clearly, manually, and with dimensions. Step 1 Step 2 Step 3 Step 4 Define Problem Gather Information Concept Generation Evaluate & select MainActives or Tasks Main Activities or Task Main Activities or Tasks Define Prati Find ideas or concepts to Main Activities or Task -Internet satisfy design Define Deus Technical articles requirements through -Select the most efficient -Patents concept to the Define initial Design Trade Journals Design forms Specifications Brainstorming Functional Models constraints Flow Chart requirements) Available Tools Available Tool Available to Available Tools Develop House of Quality – Methods of finding into – Mind Map, drawing -Pugh Matri Decision Matrix Step 7 Step 5 Product Architectural Product Form Parametre Design Det Design Main Activities or Task Step 6 Configuration Design Main Activities or Tasks -Preminary selection of materials and பாபரிகாயா நானாட -Modeling Singo Parts This is an analysis to This is a step in the limitation of optimum parts to make a form Arrangement of physical ements Mad r id Nube Tools More developed drawing ring Design software to check -Orange Embodiment Desien Figure 1: Engineering Design Process
Notes on some steps of engineering design process 1 – Product Architecture can be defined as how different parts are connected with each other. This can be presented by a prototype, 3-dimentional drawings, initial sketching and drawing of all design particle 2- Configuration Design: this would include design calculations, selection of materials, manufacturing process, modeling of design or certain parts 3- Parametric Design: this is basically reviewing design under different condition to determine limitations and tolerance (this is an analysis step – example: a chair would support a maximum weight of 250 kg, and average clevator load would be carrying 6 persons of maximum weight of 1500 kg). PD would include product testing and evaluation results. Design Problem Description: Read the following problem description and answer the following question using information giving below: There is in need to design an armchair for a local furniture company. The armchair should be designed with lightweight materials (eg, wood, hard fibers, Medium-density fiberglass), reasonable cost le.g. simple connections, normal finish), comfortable seat (use high quality sponge or cushion fabric), and a feature allowing user to hold a drinking cup. No plastic materials can be included in the arcmchair which would increase cost. The designed armchair after trial and use test should support s person with maximum weight of 260 kg. The chair back support width is calculated based on health requirements and found to be 68 cm, and armrests (hand supports) should be made from high quality sponge and fine leather. The chair is designed for all users except for people with back- pain or with special needs. Assume the following design sketches were provided for this project: 23cm Figure 2A Figure 2B Figure 2C
Figure 2D Figure 2E Figure 2F Solution Instructions for Students 1. The objective of this homework is to allow students to practice the engineering design process and explore activities in each design step. 2. All answer should be based on information given in this homework.