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[cnac]

Dear All

I am trying simplified micro-model for a masonry wall in ANSYS Workbench. I am using Frictional Contact between the Masonry element with following properties:

E = 9250 N/mm2

Coeff of Friction = 0.6

Normal Stiffness, FKN = 1.0

therefore programme is calculating Normal Stiffness = 9250 N/mm2

However the programme also assigning the Tangential Stiffness, FKT = 1.0

hence the tangential considered for the analysis = 9250 N/mm2

How do I change the FKT = 0.5? in Workbench.

Any help will be very much appreciated.

 

Kind regards 

[Aniket]

Please check if the following thread helps.

https://forum.ansys.com/forums/topic/increase-contact-force-reaction-czm-mode-ii/

basically you need to use rmodif command in a command snippet under your contact

more info at

https://ansyshelp.ansys.com/account/Secured?returnurl=/Views/Secured/corp/v195/ans_ctec/Hlp_ctec_realkey.html

-Aniket

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[cnac]

Thank you, I have managed to model with RMODIF.

I want to model this separation using ANSYS contact

 

However, I am getting a convergence problem and can only get 

 

i.e., no separation is obtained, only sliding is occurring.

 

Any help will be greatly appreciated.

 

Kind regards

 

[ajaygawde]

My project on coupled filled structural analysis of hot box of pressure vessel. i have error in structural analysis about stress plots in ANSYS APDL. Error message is " the requested data s is not available, the plnsol commanad is ignored. Can anyone help me.

[Aniket]

ajaygawde, please open a new thread.

cnac, can you please show your setup in an inline image?

-Aniket

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[cnac]

Hello Aniket

 

you mean this one

[Wenlong]

Hi cnac,

I agree with Aniket that cohesive contact debonding should be able to model such behavior. You can assign bonded contact between the mansory and the contact behavior is controlled by traction-separation law. And the contact will be deactivated to allow cracking when the failure criterion is met in the cohesive law. (More info can be found here: https://ansyshelp.ansys.com/account/secured?returnurl=/Views/Secured/corp/v201/en/ans_thry/thy_mat11.html?q=cohesive%20debonding)

I've done similar research by applying cohesive elements to every element boundary to model concrete cracking, and below are some images.

Regards,

Wenlong