past year Flashcards
Define and elaborate the definitions below:
Forms
Forms
Physical shape! structure and appearance of design.
External and internal geometries of a product such as function, aesthetics and manufacturing.
Define and elaborate the definition of the term below:
Functions
Functions
Purpose and operational aspect of design.
Defines the system or product is supposed to do.
high-speed, navigation, stability, fuel efficiency and maneuverability in water
Define and elaborate the term below:
Objectives
Objectives
Specific goals that the designs aim to achieve, ensure to meet the client’s needs.
achieve max speed, safety, optimise fuel consumption, enhance comfort
Define and elaborate the term ‘Functional prototype’
Working model of design that allows for testing and validation of its function before full scale production
Help engineers to assess performance, detects flaws and refine
scaled-down or full size to test speed, stability and efficiency
Define and elaborate ‘Constraints’
Limitation that must considered such as cost, material, availability, environment impact, weight restrictions and safety
weight limit, fuel capacity, wave resistance and budget
Describe a problem statement for semi sub electric boat project
Design a semisub electric boal for recreational act; safety, efficiency and sustainability
Address the limitation of current fossil fuel powered designs; zero emission electric propulsion, silent, eco-friendly Ergonomic, intuitive operation, marine exploration
Objective for semi sub electric boat project
Safe and stable
energy eff - optimize batt life
comfort and visibility
eco friendly - zero emission
easy operation
semi sub electric boat design spiral
conceptual design (initial phase) - ship concept
preliminary design (main parameters) - hull geometry
detailed design - resistance and power
prototype testing - seakeeping and manoeuvring
production and implementation - manning and automation
meaning of objective tree
-an approach to transform vague design statements into more specific customer requirements
-expressions of the desired behaviour that the client want in product
procedure of objective tree
- Prepare list of design objectives
- Order the list into set; higher or lower level
- Draw a tree of objective, showing hierarchical relationships
objective list for an anchor
safety
durability
cost-effectiveness
objective tree of an anchor
anchor (in hierarchy shape)
safety - stable and stiff
durability - portable and last long
cost-effectiveness - affordable and reasonable
common criteria for morphological chart
feasibility
-evaluate the design concepts: technically feasible and can be practically implemented
effectiveness
-measure how well each concepts meet the design requirements in terms of efficiency, safety and cost
how to gain knowledge about design
literature review - books and journals
experimentation and testing - conduct trials or simulation
case study and benchmarking - analyse success design
CAD and simulation - software tools to test model
consultation - engage with professionals
advantages of prototype
provide proof of concept to attract funding
cost effectiveness
increase system development speed
refine the potential risks
use interaction available
type of prototype for wave energy converter
physical - scaled or full-sized to test mechanical, structural or hydrodynamic of the device
digital - simulation (virtual model) CFD and FEA to test efficiency, wave interaction and energy output
contribution of ergo
workplace safety enhancement
increase productivity
improve workers comfort
lower healthcare cost
economic growth support
