Mathematically k factor value is equal to the ratio of position of neutral axis and sheet thickness.
Neutral axis in sheet metal.
When metal is bent the top section is going to undergo compression and the bottom section will be stretched.
When metal is bent the top section is going to undergo compression and the bottom section will be stretched.
The bend allowance describes the length of the neutral axis between the bend lines or in other words the arc length of the bend.
K factor a constant determined by dividing the thickness of the sheet by the location of the neutral axis which is the part of sheet metal that does not change length.
But add a little stress and force the metal to bend and watch what happens.
The k factor in sheet metal working is the ratio of the neutral axis to the material thickness.
When a piece of metal is being formed the inner portion of the bend compresses while the outer portion expands see figure 1.
K factor is a ratio that represents the location of the neutral axis with respect to the thickness of the sheet metal part and depends on material thickness and bend radius.
K factor k can be defined as follows.
K factor in sheet metal bending is a constant used to calculate sheet metal flat length or flat pattern.
The line where the transition from compression to stretching occurs is called the neutral axis.
The line where the transition from compression to stretching occurs is called the neutral axis.
The granular bonds are stretched pulled and sometimes break forcing the grains apart as they come under tensional stresses.
The location of the neutral axis for a specific sheet is defined by a factor called k factor.
The k factor in sheet metal working is the ratio of the neutral axis to the material thickness.
Where t is the distance.
When the sheet is flat without any applied stress the neutral axis is in the middle of the sheet.