rjmacpherson
New member
- Dec 4, 2010
- 4
Afternoon all,
Apologies about the simplicity of this question, however I have just started Engineering. I would greatly appreciate it if someone could help me out with this problem
I have a frame structure which is made up of non-symmetric C sections. I have taken a section cut in one of these sections to illustrate the cross section as shown in the attached figure. At one of the nodes, a point load is applied and one member is attached to a wall with three bolts.
I run a simple beam analysis and for each of the beams I have an axial force and bending moment distribution apart from Member 1. When I run the analysis, I fully fix the two nodes associated with Member 1, so I get an X and Y reaction along with a moment reaction at each of the respective nodes.
I understand that the bolts will experience a shear force and tension load (please correct me if I am wrong). I can calculate the shear allowable, from the reaction forces of the two nodes associated with Member 1, for each of the bolts as well as the tension allowable for the bolts as data is provided for the shear strength and tensile strength of the bolts which goes through a material of a certain thickness.
The next part of the problem is if the upper part of the C section was reduced on Member 1, which I have illustrated on the attached figure and to determine whether the structure has the required strength still to carry this load. If I rerun the bolt analysis, I get the same RF for the shear and tension allowable as the plate the bolt has gone through has not reduced in height.
How do I take this material reduction into account to determine whether the structural strength of the frame is still able to carry this load?
Any help would be greatly appreciated.
Apologies about the simplicity of this question, however I have just started Engineering. I would greatly appreciate it if someone could help me out with this problem
I have a frame structure which is made up of non-symmetric C sections. I have taken a section cut in one of these sections to illustrate the cross section as shown in the attached figure. At one of the nodes, a point load is applied and one member is attached to a wall with three bolts.
I run a simple beam analysis and for each of the beams I have an axial force and bending moment distribution apart from Member 1. When I run the analysis, I fully fix the two nodes associated with Member 1, so I get an X and Y reaction along with a moment reaction at each of the respective nodes.
I understand that the bolts will experience a shear force and tension load (please correct me if I am wrong). I can calculate the shear allowable, from the reaction forces of the two nodes associated with Member 1, for each of the bolts as well as the tension allowable for the bolts as data is provided for the shear strength and tensile strength of the bolts which goes through a material of a certain thickness.
The next part of the problem is if the upper part of the C section was reduced on Member 1, which I have illustrated on the attached figure and to determine whether the structure has the required strength still to carry this load. If I rerun the bolt analysis, I get the same RF for the shear and tension allowable as the plate the bolt has gone through has not reduced in height.
How do I take this material reduction into account to determine whether the structural strength of the frame is still able to carry this load?
Any help would be greatly appreciated.
