How to implement a nonlinear COMBIN39 spring in ANSYS Workbench Mechanical with APDL Commands

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A spring connection in ANSYS Workbench Mechanical is usually implemented using the COMBIN14 linear spring element of ANSYS. This video illustrates how to convert a chosen spring element into a nonlinear COMBIN39 element, in which a nonlinear Force-Deflection curve can be entered with point data, using an APDL Commands object.
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Опубликовано:

9 сен 2024

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Комментарии : 20

@muratislamceng 4 года назад

Brilliant video and commentary that covered all the questions I would have asked! Thank you ever so much!

@HellBoy-xl7kp 3 года назад

How to set the spring to be pulled or compressed from the beginning ? I'm doing a simulation. Two objects apart are connected by a spring with a stiffness of 150N/mm. An object is fixed, an object is pulled out by a distance of 80mm. Calculate the spring reaction in 03 cases of the initial length of the spring between 2 objects: Springs at natural length, the spring is compressed by a distance of 20mm and the spring is pulled about 20mm.

@Zpanda21 3 года назад

Your presentation Thank you. İf we would like to define a nonlineer spring which works only X direction, what should we write in the command line? So, the spring should not give any effect force in the Y and Z direction.

@SimuTechGroup 3 года назад

Hi Mesut, feel free to drop us a note at info@simutechgroup.com if you're interested in our consulting services and we'd be more than happy to help! Otherwise there is the Ansys student community to find posts/articles: studentcommunity.ansys.com/

@arunchandbala9597 3 года назад

What does the distance between adjacent spring Combin 39 elements actually mean which is used in force displacement equation?

@SimuTechGroup 3 года назад

Hi Arun, feel free to drop us a note at info@simutechgroup.com if you're interested in our consulting services and we'd be more than happy to help! Otherwise there is the Ansys student community to find posts/articles: studentcommunity.ansys.com/

@arunchandbala9597 3 года назад

Sir, How to model a COMBIN 39 between SOLID 65 and LINK 180 nodes using ANSYS APDL..I came to know from few researchers that Re bar node should be taken at small finite distance from Concrete node to make COMBIN 39 Non Linear spring to work..How should i take Re bar at small distnace to Concrete node in APDL??

@SimuTechGroup 3 года назад

@rhylanehajar5740 3 года назад

really it's so interesting, just i need to know, how can i attach a spring element to point mass element? thank you in advance

@SimuTechGroup 3 года назад

Hi RHYLANE, feel free to drop us a note at info@simutechgroup.com if you're interested in our consulting services and we'd be more than happy to help! Otherwise there is the Ansys student community to find posts/articles: studentcommunity.ansys.com/

@rhylanehajar5740 3 года назад

@@SimuTechGroup thank you so much thank you. I'm so interested

@user-ul3vy5gz2y 3 года назад

Please help me! Does exist an opportunity to use nonlinear damping effects in this element? Are there other opportunities to introduct nonlinear damping diagram in a model?

@MNAr-uj2bn 2 года назад

Thats the thing I am after for also! Did u find any solution for this

@leandrocesardosreis4569 6 лет назад

How to use nonlinear springs with "only compression" behavior???

@muratislamceng 4 года назад

You should be able to define the Force/Deflection values from compression to tension as you like. So when you go to tension values, set two tension values to zero newton to flatline the curve... This would generate compression only reaction forces that you wanted.

@prasadbejgamwar6828 3 года назад

@@muratislamceng sir..do we have to use negative values for force for compression spring

@okanakzm 2 года назад

from tools>options>appereance click beta options, then you can change spring behaviour to ''compression only''

@pruthumanderwad4324 3 года назад

Hi there! Can anyone help me, I'm not getting the connection option in the outline. I need to attach a spring, but I don't know how. I'm doing the stress analysis of a rocker and i need a spring for this to be done. please reply to the comment if you can offer help Thank you!

@deepak_nigwal 3 года назад

the moment you open the Mechanical module from the workbench, right click "Model" from the outline options, then you will find the "Connections" option. Click on it, and then you can use it to insert Spring, bearing or beam, or any contact tool.

@pruthumanderwad4324 3 года назад

@@deepak_nigwal thanks a lot sir!👍🙏