Fofbendinggirder
by Tim C. Lueth, SG-Lib Toolbox: SolidGeometry 5.6 - Mechanical function
Introduced first in SolidGeometry 4.9, Creation date: 2020-08-21, Last change: 2025-09-14
returns binding force of a bended girder
Description
Helpful parameter:
Steel Slim=355; E=200000
PA12 Slim=36; E=1240 (PA2200 called at EOS)
The length of a bar which cross section is [h x b] that will be bended distance s (related to h) if a force F is applied?
the less force F is applied the longer the length is
the less distance s is requested the shorter the length is
The force to deflect a bending beam in the order of its height is reduced with the 4th power when the height is halved. So to push in an enclosure with half its wall thickness 1/16 of the force is sufficient. Two fingers can apply 50N when gripping. 5N, i.e. 500 grams are no problem. We can even apply 10N to a thin bar of it in continuous load.
See Also: SGsnaprivet
, lofbendinggirder
, sofbendinggirder
, rofcircbend
, bofbendinggirder
Example Illustration
Syntax
[F,alpha,Smax,r,c]=Fofbendinggirder([l,h,b,s,E,Slim])
Input Parameter
l: | | length of the bended beam |
h: | | height of the cross section of bended beam; default i 1.5 |
b: | | width of the bended beam; default is h |
s: | | bending distance; default h |
E: | | E modulus default 1200 MPa (Polyamid PA12) |
Slim: | | Limit of bending stress |
Output Parameter
F: | | bending force to achieve distance s |
alpha: | | bending angle |
Smax: | | bending stress |
r: | | bending radius |
c: | | bending contour |
Examples
Fofbendinggirder(6,1.5,1.5,2.0) % clip width length 6 and wall thickness 1.5 and pin of 0.5
Copyright 2020-2025 Tim C. Lueth. All rights reserved. The code is the property of Tim C. Lueth and may not be redistributed or modified without explicit written permission. This software may be used free of charge for academic research and teaching purposes only. Commercial use, redistribution, modification, or reverse engineering is strictly prohibited. Access to source code is restricted and granted only under specific agreements. For licensing inquiries or commercial use, please contact: Tim C. Lueth
Last html export of this page out of FM database by TL: 2025-09-21