ME 220

Lesson 3: The Design Process

  • Steps of the Design Process include:

    • Reframing: Reevaluate the problem.

    • Conceptual Design: Define and outline ideas.

    • Production: Implement and produce the design.

    • Adoption: Tailor the process to the end goal or result.

Stakeholder Involvement

  • Stakeholders: Individuals or groups invested in the project's success.

    • Includes:

      • Military Entities: Montever, Department of Defense (DoD), allies, etc.

      • Investors and Taxpayers: Concerned about funding and outputs.

      • End Users: such as pilots and maintenance crews who directly use the product.

Gathering Requirements

  • Methods to gather requirements include:

    • Surveys/Interviews: Collect broad and specific data from stakeholders.

    • Focus Groups: Combine inputs from multiple stakeholders.

    • Observation Studies: Directly observe processes to gather insights.

    • Product Benchmarking: Compare against existing systems to identify improvements.

Environmental Considerations

  • Acknowledge global issues and lifecycle impacts in design thinking.

Conceptual Design and Ideation

  • Moving from conceptual design to preliminary design involves:

    • Divergent Thinking: Generating many ideas without judgment.

    • Strategies include:

      • Brainstorming: Collective idea generation.

      • Functional Decomposition: Break down the problem into smaller tasks.

      • Morphological Matrix: Combine different functions and ideas to create solutions.

      • 6-3-5 Brainwriting:

        • 6 participants write 3 ideas, rotating to critique and build upon them.

Design Aspects

  • Focus on both functional requirements and negotiable aspects.

Mini Design Project Example

  • Example calculation given in the project, but details are unclear.

    • Note: Requires contextual understanding for full comprehension.

Additional Notable Concepts

  • Tensile and Compressive Forces: Important in structural design, understanding how materials behave under stress.

Summary of Materials Behavior

  • Rigid structures: Like beams or tools require detailed stress analysis to ensure safety under operational loads.

    • Axial and Shear Forces:

      • Calculations for internal forces crucial for ensuring structural integrity.

    • Under taus of complex stresses, F = ma (Newton's second law).