FE – calculation

A finite elements calculation visualizes tensions and the highest occurring stress at a given load. The resulting deformation and therefore the deflection of the blade tip is also shown. To every fork arm we provide an according FE-calculation free of charge. You receive facts and numbers of your fork as a graphical overview for your implementation of requirements and safety.

The following examples underline the benefit of a FE calculation

FE-calculation 1

FE-calculation number 1 shows a maximum tension of 500.6 N/mm² in the region of the fork kink (maximum bending moment) at twice the nominal load.

 

The maximum permissible tension is 1,400 N/mm² for Hardox500. This results in a safety factor of 5.6.

Berechnung 1

spine 45 mm thick

ISO 3, nominal load 2,500 kg/item

profile spine 45 mm x 140 mm

profile blade 45 mm x 140 mm x 1,500 mm length

FE-calculation 2

FE-calculation number 1 shows a maximum tension of 475 N/mm² in the region of the fork kink (maximum bending moment) at twice the nominal load.

 

The maximum permissible tension is 1,400 N/mm² for Hardox500. This results in a safety factor of 5.9.

Berechnung 2

spine 65 mm thick

ISO 3, nominal load 2,500 kg/item

profile spine 65 mm x 140 mm
profile blade 45 mm x 140 mm x 1,500 mm length

FE-calculation 3

FE-calculation number 3 shows at 2 times the nominal load (5,000 kg) a maximum deflection of the fork tip of 50 mm.

At nominal load (2,500 kg) the deflection only results in 25 mm.

Berechnung 3

ISO 3, nominal load 2,500 kg/item

profile spine 45 mm x 140 mm
profile blade 45 mm x 140 mm x 1,500 mm length

blade 45 mm thick

2 times the nominal load shows a deflection of 50 mm

FE-calculation 4

FE-calculation 4 shows at 2 times the nominal load (5,000 kg) a maximum deflection of the fork tip of 39 mm.

At nominal load (2,500) the maximum deflection is only 19 mm.

The reinforced fork spine results in a significantly reduced deflection of the fork (see FE-calculation 3)

Berechnung 4

ISO 3, nominal load 2,500 kg/item

profile spine 65 mm x 140 mm
profile blade 45 mm x 140 mm x 1,500 mm length

2 times the nominal load shows a deflection of 39 mm

blade 65 mm thick