Comparing Solid element and Shell element

Comparing Solid element and Shell element – WB

- September 11, 2018 at 3:24 am
  
  thanhttdt
  Subscriber
  
  Hi everyone,
  
  When I did an analysis for 2 cases: solid element and shell element in Workbench, I saw that the von Mises in 2 cases are much different
  
  235 Mpa and 68 Mpa respectively.
  
  Figure 1: Solid element, VM stress 235 Mpa
  
  Figure 2: Shell element, von Mises stress 68 Mpa
  
  Could anyone take a look and send me any explanation?
  
  Link file: https://drive.google.com/drive/folders/1m5rmXKPJWJT7zMBKs1TlCb9qXxPo6JJX?usp=sharing
  
  Thanks in advance,
- September 11, 2018 at 8:57 am
  
  thanhttdt
  Subscriber
  
  Could anyone see and give me any suggestions?
  
  Many thanks,
- September 11, 2018 at 12:21 pm
  
  peteroznewman
  Subscriber
  
  Hello Thanhttdt,
  
  You have applied different loads to the two models.
  
  On the Solid Model, you have a bearing load, which takes the force and applies it to the nodes only on the side of the face that a pin in the hole would push on, and with the force scaled as a cosine function with 1 on the centerline ramping down to 0 at the 90 degree point of the face.
  
  On the Shell Model, you have a force load, which takes the force and divides it equally to all nodes around the circle.
  
  Try putting a force load on the solid model and it will be closer. However, the bearing load is a more realistic load for your case.
  
  Regards,
  
  Peter.
- September 13, 2018 at 1:46 am
  
  thanhttdt
  Subscriber
  
  Hi Peteroznewman,
  
  Thanks for your suggestion,
  
  I try to use bearing load in shell element model but cannot.
  
  Could you suggest me to apply bearing in this case?
  
  Thanks in advance