Stress and Design Principles

Stress = The load per unit area within materials that arises from externally applied forces Design for Stress = Methodology of designing components to withstand the forces they will face in their service Cross Section Area = The area of a two-dimensional shape that is obtained when a three-dimensional object - like a piece of pipe - is cut through by a plane Load = The external force applied to an object

Increase in Load = Increase in stress Increase in Cross Section Area = Decrease in stress Unsafe Component Design = Failure under applied load Safe Component Design = Stability under applied load

High Stress = Increasing cross section area or reducing load Low Cross Section Area = Increasing area or reducing load High Load = Increasing cross section area or reducing stress Unsafe Component = Redesigning for better stress handling