ttaannggeenntt
Aerospace
- Mar 20, 2017
- 3
Hi All,
I am a fairly new to fea and have a question regarding CBUSH elements.
I am trying to model CBUSH elements to represent an M3 fastener which bolts 2 mounting holes of an angeled bracket to a surface.
What stiffness value do I use and in what in What DOF?
DO I use K = AE/L for stiffness calculations?
where A = pi*d^2/4 (where I took D to be 2.9 mm for M3)
I got A=6.6e-6
E = 1.8e8 Pa
L = .008m
I get K = 147689.4
my DOF would be fixed in 12345 and not in z since the fastener can rotate around that axis?
^^^ not sure if this is correct...
Thank you
I am a fairly new to fea and have a question regarding CBUSH elements.
I am trying to model CBUSH elements to represent an M3 fastener which bolts 2 mounting holes of an angeled bracket to a surface.
What stiffness value do I use and in what in What DOF?
DO I use K = AE/L for stiffness calculations?
where A = pi*d^2/4 (where I took D to be 2.9 mm for M3)
I got A=6.6e-6
E = 1.8e8 Pa
L = .008m
I get K = 147689.4
my DOF would be fixed in 12345 and not in z since the fastener can rotate around that axis?
^^^ not sure if this is correct...
Thank you