What is the structural benefit of bending sheetmetal edges or flanges?

• A. MAKES IT MORE RIGID
• B. INCREASES WEAKNESS
• C. REDUCES DUCTILITY
• D. INCREASES WEIGHT

Answer: (A)

Bending sheet metal into flanges stiffens the panel by creating a larger, more resistant cross-section. The flange acts like a vertical brace that carries bending loads and resists buckling, effectively increasing the moment of inertia of the section. That extra stiffness reduces deflection under load and helps the edge stay straight and stable, which is the main structural benefit. Since this forming work rearranges existing material rather than adding new material, weight doesn’t increase as a benefit, and the process doesn’t inherently reduce ductility in a way that would compensate for the gained rigidity.