Thanks for your reply, i am attaching a ref drawing. I want to show that each hole of the bolt hole pattern on one face of the C channel and other face is drilled together so that concentricity between the drilled holes are with in a specified tolerance. Hope the question is clear now.
I am having a pattern of two concentric holes on both the faces of a C channel, these holes are drilled together in one go. The pattern has four sets of these two holes ( total 4x2=8 ). How to properly show this in drawing. I am using iso - gps
Yeah, I too wasted my time chasing this.
Thanks a lot swc and rb1957 for your guidance and suggestions.
I am going to tell them that if the model pass groundcheck you are good to go.
Swc: I am using CQUAD4 elements
The client is insisting on rigid body modes of order 1e-6Hz or less. They will integrate my model to their very large model. They say that if they integrate my model to theirs, it might reduce the accuracy. I am not able to find a technical reason to reply to them...
Really sorry, please excuse my poor articulation.
this is the femci book I told
I started with a complicated model and got 1e-4Hz.
Then I ran for simple model and got 1e-4Hz, that's all
I want to improve this value to an order of 1e-6 Hz
I was informed that for a free free analysis the first...
The shape is just a rectangular plate with 100x70 square CQUAD4 elements with pshell property and isotropic material. And first free free run is with another complicated model, Second run is with above said model. both provided first 6 rigid body modes of order 1e-4Hz, can you please guide me on...
Dear experts,
I am trying FE Analysis of a complicated composite system in nx nastran. When I do a free free run my first 6 rigid body modes are of order 1e-4. But my client is insisting on modes better than 1e-6. In order to understand better I modelled a simple plate with isotropic material...
