Topic 6.2: Modelling and prototyping Questions

Explain how finite element analysis works.

Draw a simple beam fixed at one end with a load at the free end, and indicate where finite element analysis would show the highest stress.

A polypropylene storage-box lid will be injection moulded. Outline how finite element analysis (FEA) could be used to develop the moulding process.

Twelve users tested a cordless drill prototype. Seven regripped during a 30-second drill and said it felt like it might slip; four needed two hands for the battery release; three said it was heavy, but none took longer or stopped early. Analyse this feedback and state the changes.

The designers of a flat-pack bookshelf with 24 parts produced an assembly drawing for the people who buy it. Outline one advantage of using an assembly drawing here.

Which drawing type shows the ORDER in which parts are assembled?

The designers of a camera drone produced an assembly drawing for the factory workers who build it. Outline one advantage of using an assembly drawing here.

The designers of an adjustable desk lamp produced an assembly drawing for the client and the manufacturer. Outline one advantage of using an assembly drawing here.

Which limitation of CAD matters most when designing a hand-held power tool?

What can a virtual model do that a solid model cannot?

What is the main advantage of a PARAMETRIC solid model?

The designers of a hairdryer used a computer-generated model to present a section through the handle showing the motor and wiring. Identify the type of model used and one feature that makes it suitable.

The designers of a pair of headphones used a computer-generated model to present a view of how the ear cup, cushion and headband fit together. Identify the type of model used and one feature that makes it suitable.

The designers of a clip-on bicycle light produced part drawings and an assembly drawing. Describe the difference between these two kinds of drawing.

On a third-angle drawing, where does the right-hand side view go?

The designers of a desk stapler produced part drawings and an assembly drawing. Describe the difference between these two kinds of drawing.

The designers of a two-slice toaster produced part drawings and an assembly drawing. Describe the difference between these two kinds of drawing.

Why is the orientation of a part chosen before the other print-preparation decisions?

Why should a manufacturer never scale a dimension off a printed drawing?

A cordless drill housing is to be discussed with a client, agreed with a manufacturer, and explained to a repair technician. Describe the drawings needed for each and give a reason.