Analysis of truss using pin and bolt joint
Altair EmployeeCase1 (3d using bolt joint) - In this i used rbe 2 in outer edges and connected them using pbeam (released pins a=6 and pins b=6).during Analysis the truss is bending and got value around -33 mm. if i didn't release pins a and b,the truss deflects to value of -16mm instead of bending.
Case2 (3d using pin joint)-In this i used rbe 2 for entire face and connected them using pbeam .during Analysis In both cases (released pins a=6 and pins b=6 or not released pins a and pins b) the deformation of truss is 1.057*10^-12.
Case1 (2d using bolt joint)-In this i used rbe 2 in outer edges and connected them using pbeam (released pins a=6 and pins b=6).during Analysis the truss is bending and got value around -33 mm.
My doubt is why the deformation is very small in case of pin joints and which of the above approach is correct ,if i want to model truss which allows rotation in joints(in my file z axis) and subjected to bending.
thanks
Answers
-
Hi Mohan Raj,
The first and last approaches are reasonable.
In the second approach, the head is modeled inside the void which doesn't make sense.
0 -
Thank you
0 -
Altair Forum User said:
Hi Mohan Raj,
The first and last approaches are reasonable.
In the second approach, the head is modeled inside the void which doesn't make sense.
Even the case 1&3
If i give pins a and pins b=0 then the truss is deflecting instead of bending what's the reason for deflection.
please clarify.
thanks for the previous reply.
0