Mini Design Case - Dinning Chair Design rocess. Homework Objective: Homework 3 objective is to apply engineering desi Write briefly and neatly. Draw necessary diagrams clearly, manually, and with dimensions Step 1 Step 2 Step 3 Define Problem Gather Information Concept Generation Main Activities or Tasks Main Activities or Tanks Main Activities or Taskes Define Problem -Books Find ideas or concepts to Statement -Internet satisfy design Define Design -Technical articles requirements through Requirements -Patents specification Define Initial Design -Trade journals Design forms Specifications Relevant Engineering Brainstorming Identify possible Code -Functional Models constraints Flow chart Available Tools: Available Tools Available Tools Develop House of Quality - Methods of finding info - Mind Map, drawing Others Step 4 Evaluate & select Concept Main Activities or Tasks -Select the most efficient concept to satisfy requirements. -Define selection criteria (With focus on design requirements Available Tools: -Pugh Matrix - Decision Matrix -Others Step 5 Step 6 Product Architectural & Product Form Main Activities or Tasks Arrangement of different parts to make a form Arrangement of physical elements, Modularity. Brid, Available Tools: More developed drawing Drawing software Configuration Design Main Activities or Tasks - Preliminary selection of materials and manufacturing process -Modeling Siting of Parts Step 7 Parametric Design Main Activities or Tasks -This is an analysis step to check designed product for limitation of optimum operation Robust Design Set design tolerance and limitations Available Tools Design software to check or review design Detail Design Main Activities or Tasks -Engineering Drawing This is not a step in the design process. Available Tools -Design software Products catalog Available Tools -Drawing software -Others Embodiment Design 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 parts...etc. 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 elevator 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 ginformation giving below: There is in need to design a dining room chair for a local furniture pany. The dining room chair should be designed with environmentally friendly materials (for example, using mdf-wood, degradable natural fibers, aluminum), reasonable manufacturing cost (for example, using machine made, hand assembly), comfortable dinning chair (use high quality cushion fabric or high compressed sponge), and a feature allowing user to hold personal items. No sharp edges metals can be included in the dining room chair, which would increase cost. The dining room chair legs after laboratory trial and use testing of chair prototype developed by designer should supports a maximum axial load of 735 kN. The chair seating area width is calculated based on total user weight requirements and found to be 88 cm cm, and the materials of the seating part of the chair is selected from high quality leather and high-density sponge. The chair is designed for all users except for people with back-pain or people with special needs. Therefore, the chair support user with maximum seating height of 44-78 cm, which would fit most users. Assume the following design sketches were provided for this project: cm 23cm 44cm 78.5cm 5.com 71cm 46cm 64cm 55.5cm Figure 2A Figure 2B Figure 2C ME M Figure 2D Figure 2E Figure 2F Solution Instructions for Students 1- The objective of this homework is to allow students to ctice the engineering design process and explore activities in each design step. 2- All answer should be based on information given in tomework GENG 215 - Engineering the Question 6: What are the available sources of information in this design? (From Figure 1 above) or how would you search for information for this design.(6 points) Conceptual Design 1- 2- Gather Information 2- 3- Question 7: List three activities or tools that can be used for the concept generation step. (From Figure 1 above) (3 points) 1. 2- Conceptual Design 3- 3- Concept Generation Select two images from the ones above, write only the figure number. Cabinet (4 pnt.) 1- 2- Sample Design Concept 1 (2 pnt.) Sample Design Concept 2 (2 pnt.) Conceptual Design Question 8: List two tools selecting tools (from Figure 1). 4- Select Concept (Practice or review concept selection tools in your own) Embodiment Question 9: List two activities related to Product Architectural (from Figure 1) Design 5- Product pat) Architectural (1 pnt) Selected concept images that is related to this step from the given above. just write the images. (3 pnt./1.5 for A and B) Draw selected concept of steps 5 A. Sample PA Drawing 1 B. Sample PA Drawing 2 Question 10: List two activities related to this step (from Figure 1): (2 pnt) Embodiment Design 1- 2- 6- Configuration Design (4 pnt) Give two examples about Configuration Design from problem A. B. Question 11: List two activities related to Parametric Design (from Figure 1): (2 pnt) 1. Embodiment Design 2- given in the above problem (2 pnt) 7- Parametric Design Give two examples about Parametric A. B. Selected images that is related to this step from the given above, just write the images (4 pnt./2 for A and B) Embodiment Design Sample D.D Drawing 1 B. Sample D.D. Drawing 2 8- Detail Design Design Step Dining Room Chair Design Question 1: Write Design Problem Statement: (Write in your own words from the above description) (4 points) Question 2: Identify four design requirements. (8 points) 1- Conceptual Design NII 3- 4- Question 3: Identify fou sign Specifications (6 points) 1- 2- 1- Define Problem Propose one specification to support the following design requirement "feature allowing user to hold personal items "- not given in the problem, develop from your own based on your understand of this design case. (3 points) GA Question 4: Write one possible design constraint from given information (2 points) Question 5:What tools is/are available to define the relationship of design requirements with design specifications? (3 points) 1