How to create a circular pressure?

Tim_21558
Tim_21558 Altair Community Member
edited March 2023 in Community Q&A

Hello everyone,

I have meshed my component and tested ist with simple constraints and a force.

In reality, the part will be tested with a force which is applied with a circular plate which pushes tangent against my part.

I have tried to make a circular surface next to my meshed part and aplied the pressure on the surface, but I cound not get it to work properly...

Is there a way to realise this in Hypermesh?

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Answers

  • Ben Buchanan
    Ben Buchanan
    Altair Employee
    edited March 2023

    It depends on what you are doing and what you are looking for.  If you want specific information right at the point of contact setting up a model with the force applicator modeled and contact between the 2 parts is the way to go.  If the area right around the force application isn't critical you can get good results for the rest of the model with just a force applied there or a force applied with an RBE3.

  • Tim_21558
    Tim_21558 Altair Community Member
    edited March 2023
    Ben Buchanan said:

    It depends on what you are doing and what you are looking for.  If you want specific information right at the point of contact setting up a model with the force applicator modeled and contact between the 2 parts is the way to go.  If the area right around the force application isn't critical you can get good results for the rest of the model with just a force applied there or a force applied with an RBE3.

    Thank you for your answer.

    My goal is to check, if the whole part could handle the load, which is applied in reality with the pad. Therefore I am looking at the element stresses (vonMises).

    Do you think I can achieve this with a simple force or do you think I have to model a force applicator?

  • Ben Buchanan
    Ben Buchanan
    Altair Employee
    edited March 2023
    Tim_21558 said:

    Thank you for your answer.

    My goal is to check, if the whole part could handle the load, which is applied in reality with the pad. Therefore I am looking at the element stresses (vonMises).

    Do you think I can achieve this with a simple force or do you think I have to model a force applicator?

    Take a look at your results with a simple load.  Is your max stress at the application point? If so, is it only right at the application point or are there high stresses for several elements around the application point.  The stresses farther away from the application point should be reasonable as long as the rest of your modeling is good.  If it looks like it is failing at more then just a point at your application you probably want to look into creating contacts but if it is just a stress singularity and quickly goes down to acceptable values away from that point it is probably ok.

  • Tim_21558
    Tim_21558 Altair Community Member
    edited March 2023
    Ben Buchanan said:

    Take a look at your results with a simple load.  Is your max stress at the application point? If so, is it only right at the application point or are there high stresses for several elements around the application point.  The stresses farther away from the application point should be reasonable as long as the rest of your modeling is good.  If it looks like it is failing at more then just a point at your application you probably want to look into creating contacts but if it is just a stress singularity and quickly goes down to acceptable values away from that point it is probably ok.

    Thank you for your answer!

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