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The figure above depicts the mesh used to generate the results you see below. The domain is rectangle. Please note that although this problem has been solved using discrete elements, it is not uniformly discretized. A finer mesh is used in areas of predicted greater stress concentration. We want to be able to accurately simulate the end effects of the bar.

Displacement:

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Please note that the displacement throughout the bar is not uniform. There is no displacement at the end attached to the wall and the displacement increases until the maximum at the point load as we move along the bar.

Sigma_x:

• Is σ_x = P/A through the bar?
  
  

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