I am trying to practice the convergence to make sure accurate simulation result. The following is the test example model:
model : steel pipe( diameter 100mm, length 150mm) with an extension(30mm diameter, length 150mm)
material: cast iron
fixture: fixed geometry at the end of extension
force: 20000N action at the bottom of pipe
mesh density including
Sine the coarse to fine mesh density cannot result in a convergence, so I have input smaller mesh density(2mm and 1mm) and then get a convergence.
Based on this example, I have two questions:
Q1. I have also input mesh density to 0.5mm, but the solidworks shows a mesh fail message, I am doubted as I always expect only large mesh size will cause mesh fail, right?
Q2. The result is a convergence so it is accurate and reasonable. But, I have found that the total displacement is only 0.4mm due to the external force
I have checked that the displacement is a convergence so it is also reasonable.
The max. stress at the joint is about 550MPa which is over the tensile stress of cast iron, so this example result shows that a 20000N will deform the steel pipe and the joint of extension will break.
But in reality, we cannot see the breakdown of a steel pipe with only 0.4mm displacement, right? 0.4mm displacement seems to be an insignificant value and may not result any crack or failure, so I am doubted that if my simulation concept is wrong.
Hope this example will make more discussion here.