Neutral Axis Sheet Metal

Let us discuss in detail about bend allowance k factor and y factor.

Neutral axis sheet metal.

In other words the neutral axis for this part occurs kfactor 100 of the way through the material s thickness. The neutral axis and considerations for bending plate. K factor k can be defined as follows. The line where the transition from compression to stretching occurs is called the neutral axis.

In sheet metal the k factor is the ratio of the neutral axis to the material thickness. When the sheet is flat without any applied stress the neutral axis is in the middle of the sheet. Where t is the distance. The k factor in this case kfactor expresses that distance as a percentage of the material s thickness.

When a piece of metal is being formed the inner portion of the bend compresses while the outer portion expands see figure 1. When metal is bent the top section is going to undergo compression and the bottom section will be stretched. By calculating and taking into consideration the developed lengthy a qualified metal bender roller can accurately bend plate to the desired final product. 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. The bend allowance describes the length of the neutral axis between the bend lines or in other words the arc length of the bend. Mathematically k factor value is equal to the ratio of position of neutral axis and sheet thickness. The bend allowance and bend deduction are two measures that relate the bent length of a piece of sheet metal to the flat length.

The k factor in sheet metal working is the ratio of the neutral axis to the material thickness. The distance between the inside surface of the part and the neutral axis is known as the neutral axis offset. 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. But add a little stress and force the metal to bend and watch what happens.

Bend allowance plays a critical role in calculating flat length of any sheet metal part. The neutral axis and considerations for bending plate. The line where the transition from compression to stretching occurs is called the neutral axis. Diego plate rolling november 15 2019.