Learning Forum

[ADEEL_khan]

[Ashish Khemka]

nnPlease refer to the following link:nnnRegards,nAshish Khemkan

[ErKo]

Solid65 are legacy elements that are not recommended anymore since they are mesh sensitive and thus can give different results depending on the mesh density.nWe have a great workflow in the 2020 R2 and using our inbuilt reinforcements (see how you define/set reinforcements in the image below) and the Menetrey-Willam (MW) material model that behaves well for many different types of concrete failure modes. Also stay with MW for now and forget for the time the solid65 and smeared model - the MW should be good for many type of failures in concrete (flexure, shear, tensile,..) and it is easy to get parameters for. nnnnThank younnErik Kostsonn

[ADEEL_khan]

Thank you Erik Koston. Its mean I have to installed Ansys 2020R2n

[ErKo]

No worries - yes we need 2020 R2 to use the inbuilt reinforcement - the MW model is under the geo-mechanical materials in engineering data.nnWith this approach now in 2020 R2 we do not need any command snippets anymore so it is very straightforward to set up and use in 2020 R2 WB/Mech.nnAll the best.nnErikn

[ADEEL_khan]

Is automatic connection can be built between reinforcement and concrete in ANSYS 2020 R2n

[ADEEL_khan]

Respected sir, I installed Ansys 2020 R2 and there is no MW model in Geomechanical data in engineering datan

[ErKo]

Apologies for that. MW is a short form which I use for the Menetrey-Willam model which is under the geomechanical materials in engineering data (see below).nnAlso for the rebar/linebodies they do not need any contacts to the concrete, one just needs to say that these linebodies/rebar are of reinforcements type (see image below on how to do that) and not beams, and that is it.nn

[ADEEL_khan]

Thank you so muchn

[OguzhanA]

do you have connect your stirrups and longitudinal rebar ? or is there need ? n

[ADEEL_khan]

Actually I created stirrups and longitudinal bars and according to Ekostson, he says in ANSYS 2020 R2 the connection automatically created. Now its need non-linear properties in MW material and I have no these properties. I have only concrete compressive strength thats it. How I will found these properties.n

[ErKo]

Good morningnnThe connection is done internally, nut we need to use as shown many times above a reinforcement type for the line bodies in 2020 R2 and not the default beam type, so that needs to be changed for all rebars/linebodies in the body. What then happens is that based on these reinforcements reinf264 elements are generated. Thank younnErik n

[ADEEL_khan]

Ekostson please help me in concrete and steel properties. I will be very thankful to you. My email is (madeelcivil@gmail.com).n

[ErKo]

Hi AdeelnI hope you understand that what you are asking from me is not possible to answer. nWe are developing FEA software, and not making/producing concrete (or measuring its properties), and would thus not of course be able to advice on the concrete properties you use.Material properties are for the FEA users (yourself) to know/find out, and then to input them into the FEA model.nnWe can thus not advice on this.nFinally, I would advice not to post personal details, such as your email address.nThank younnErikn

[ADEEL_khan]

Thank you for the guidance .nADEEL_khann

[OguzhanA]

I mean, when we assign a cross-section to the lines, does the analysis change whether there's a gap between stirrups and longitudinal rebars or if they're united? nRegards n

[ADEEL_khan]

I don't know. I want that they must be united. so how I will make them united. In reallity stirrups and longitudnal bars are united. so how I will bond them. Thank younBest Regards,nADEEL_khann

[vaibhavtaranekar]

while defining concrete material, do we also need to specify its isotropic properties such as yield compressive, ultimate strength etc?n

[ErKo]

Yes, we need Linear Elastic Properties Youngs modulus and Poissons ratio (not ultimate strength).nnThank younnErikn

[vaibhavtaranekar]

ArrayThank you for your reply! Another thing i wanted to confirm is that, should we add MW properties directly in the CONCRETE material which is already available in library or we must create a new material with linear elastic properties + MW model in library then use it with reinforcement for analysis? n

[ErKo]

See the screenshot below. We need both isotropic elasticity (so Young's and Poisson's ratio) and the MW model definition in eng. data.nnThank you

[vaibhavtaranekar]

Thank you for clarifying. Have you worked with MW in any reinforced concrete beam? I am trying to validate wolanksi model using MW but the model does not converage at all, Its due to some issue with supports. Do you have any idea how to setup beam supports properly ie which contact to use and how to properly simulate the behaviour?nI have tried using bonded, no seperation contacts and provided fixed support on bottom left support and displacement with X dir free others fixed on right support, still the model does not run properly!n

[ErKo]

Yes, that is what I have used the most (MW). So it (MW) can definitely capture flexural, and shear failure in beams like you have, RC slabs and in more complex structures. So it should be fine for this simple example that you show.nnI would also suggest to open up a new discussion because this one is old and difficult for people to follow.nAll the bestnThank youn

[vaibhavtaranekar]

Thank you, i have started a new discussion at following thread /forum/discussion/20744/error-with-menetry-william-concrete-model/p1?new=1 Please provide your valuable knowledge and share your experience with us. n

[BruceYuan]

Solid65 are legacy elements that are not recommended anymore since they are mesh sensitive and thus can give different results depending on the mesh density.We have a great workflow in the 2020 R2 and using our inbuilt reinforcements (see how you define/set reinforcements in the image below) and the Menetrey-Willam (MW) material model that behaves well for many different types of concrete failure modes. Also stay with MW for now and forget for the time the solid65 and smeared model - the MW should be good for many type of failures in concrete (flexure, shear, tensile,..) and it is easy to get parameters for. https://us.v-cdn.net/6032193/uploads/Y7E3ZYRIRH92/image.pngThank youErik Kostson/forum/discussion/comment/90215#Comment_90215

Hi, nI am new to modeling reinforced structure using Ansys. A projecti I am working on involves a rebar-reinforced FRP structure. I've learnt from an YouTube tutorial on RC to create line bodies using DesignModeler but I am stuck with static structural model setup now. nFor some reason, I cannot see the option of Reinforcement for Model Type, is Link/Truss the same idea? nThanks!!!n