Learning Forum

[psh1988]

Hi

 

I am applying an acceleration in static structural analysis on my slope as is attached here.

I want to see the effect of acceleration on the slope rather than the boundary. However, the stress is concentrated in boundary which is not real. what should I do to transfer the effect of acceleration(table below) on the slope itself?

 

Best Regards

[psh1988]

For example, I want to get a result like this:

[peteroznewman]

Split the body in two at a point half way along the tall section and use shared topology to connect the nodes.

Then you can plot the stress on the body with the slope, and don't plot the stress on the body with the boundary.

[psh1988]

Thanks for your reply!

 

Could you  please elaborate a bit more? I do not have problem with plotting the stress!

I want to direct the acceleration to affect my slope , rather than the lateral boundary. This is what I meant.

 

[psh1988]

 I increased the length of the model, but still got failure at the lateral boundary and not the slope!

(the measure for failure is equivalent plastic strain)

[peteroznewman]

Read the ANSYS help on how to model an Infinite Structural Domain using Infinite Elements or Perfectly Matched Layers (PML).

[psh1988]

Thanks for the reply.

Is it possible that I divide the geometry into three parts(Linear material+nonlinear material+Linear like the figure below) as I have to model my geometry in 2d plane strain(so I can not use PML ). In addition, I do not know how to apply infinite elements in ansys workbench ! my analysis is static structural.

[peteroznewman]

Yes, having linear materials on either side might work. Acceleration applies to all mass, as you may have already figured out.

You can use INFIN257 elements in a 2D analysis. While you don't know how to do that now, you could learn if your first idea doesn't work out perfectly.

[psh1988]

Dear Peter

 

Thanks for your help.

 

I considered my model with one linear part in the right end to prevent from plastic strain concentration in the boundary. At the moment, I am encountering element violation error (element is distorted at the boundary between linear and nonlinear material). I read all the posts relevent to element violation error but could not overcome it. Could you please tell me what to do? I have attached my model here. 

 

it is worthy to note that I want to apply a static acceleration on my slope to find the maximum applicable acceleration on it.