This preview shows pages 1–2. Sign up to view the full content.
This preview has intentionally blurred sections. Sign up to view the full version.View Full Document
Unformatted text preview: DEFORMING Elasti i i Elastic-perfectl lastic Rigid perfectl lastic i i e p Stress strain behavior of ductile materials c-plast c w th strain hardening y p y p Rigid plast c w th strain hardening Topics for todays lecture ~ ~ ~ ~ DFM Process characteristics ~ ~ Force ~ ~ Stamping: Shapes Size Deformation processes Deforming process characteristics Deforming physics Common deforming processes Material/continuum changes during processing Machining = Local, concentrated Deforming = Over large volume Machining: ~10s - 100s of lbs ~10s - 100s of tons Materials - Virtually all ductile materials - Limited by strain/flow - Limited by force/equipment Advantages and disadvantages ~ ~ ~ ~ ) ~ ~ ~ ~ Friction ~ ~ ~ Advantages Parallel process: rapid bulk formation Overall material properties improved Disadvantages Cost of equipment and dies Limited flexibility in shapes and sizes (i.e. compared to machining Accuracy Repeatability Important physics Stress/strain Affect CQFR Affect deforming force -> equipment & energy requirements Affect on deforming force -> equipment & energy requirements...
View Full Document