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Dear Rob Just a quick question, I am using this same contact analysis using elastic plastic material of the plate. the forces seems to be too hight as compared to the analytical solution and thats not right. I may be giving the wrong plasticity module from the material list. The Yiled stress is...

Dear Rob Thanks alot for the useful tips. I have tried they way you suggested but i dont seem to get the gravity where i want. As you say I need to apply gravity, so i try to apply in on the reference point of the analytical rigid part but it does not work, it gives me an error [DLOAD, file...

Dear Rob and Nileo Thanks for your valuable suggestions, I really appreciate it. I have run the case with your suggestions, but there is a problem. When I assign the gravity load to the analytical rigid reference point, it does not recognise it and gives an error unknown assembly to reference...

Dear All I hope you are fine and in best of health. I have started working on impact analysis and staright away some questions. I am using the same geometry that i used for contact analysis, the axisymmetric model using axisymetric elements. Now what I am doing is that I have changed the...

Dear Rob I hope you are fine and in best of health. I have started working on impact analysis and staright away some questions. I am using the same geometry that i used for contact analysis, the axisymmetric model using axisymetric elements. Now what I am doing is that I have changed the...

Dear ROB I hope you will be fine and in best of health. Long time no contact as i was abroad and now back to work. After your helpful guidance i was able to make the model to work according to my specification. Now if i want to run the same thing like still a static case but in 3D, will the...

Dear Rob I hope you are fine. I just wanted to know that the dimensions you used for this example, are they in meters or millimeters. I checked the radius of the indentor its 0.5 so is it in meters or millimeters? As the corresponding force -time graph and displacement graph that i draw i am...

Dear Rob Thanking you will be a under statement. I think you just have saved my job and i am really grateful to you, for the effort you have made for me. It really works they case you did and that was exactly what i was looking for. Now I can move to Impact of these two parts and as you...

Dear Rob I hope you are fine and in best of health. Actually i wanted to update on my progress. I have got rid of the error that was appearing agaian and again, the one mention in the last posts. Thanks to you really. Now that i can see the results, i cannot see deformation, instead the...

Dear Rob I have tried the model with your suggestions. But it is still giving me the same error. "Results for current deformed variable are not available for one or more nodes constrained in the model.Deformation of such nodes are assumed to be zero" Is it to do with the constraint that i...

Dear Rob I thank you for the suggestions. I have tried the way you have suggested and have designed the model as axisymmetric and used axisymmetric elements too. The analyis runs fine and is successful but i get this message when it comes to see the results. "Results for current deformed...

Dear Rob I thank you for yuor helpful advice. I am sorry i could not reply earlier it was due to holidays in this part of the word for national day. I have tried using plane stress elements and also refine the mesh density and i can see some deformation but not complete only in the middle...

Dear Rob Thanks alot, this was really helpful and made life alot easier. Thanks once again. I have been tring the same problem again with complete sphere in 2D making contact with the rectangular plate. I have designed the sphere(indentor) rigid with steel properties, as u can see in the...

Dear Rob Just a quick question, I wanted to know if the units i am using are right, Please check my model and do let me know if I have inputted them rightly. I am using the dimensions in meters indentor Radius = 0.0828m length of plate = 0.090m Youngs Modulus E = 7.9 Gpa Density = 1580 kg/m3...

Dear Rob Thanks alot. I will do as you suggested. I will start a new thread for the impact analysis and will let you know. Best regards

Dear Rob Thanks alot for these gelpful tips. I have tried using your suggestions, but you know it is still overlapping and going inside the plate. I know you are right its to do with the type of element i have to choose. For the element bit as you suggested to use second order elements for...

Dear Rob I couldnt thank you more. I have made changes according to your input. I have applied load to the top face of the indentor and also removed the second (remove load from the boundary condition). The analysis runs fine, but when i animate the indentor actully goes inside the plate and...

Dear Rob Thanks alot, Yes I have created a new rectangle and modeled the indentor with the deformable shell with steel properties. All goes well, thanks to you. There is a single question that i need to ask you that is where will i apply the load on this indentor and how will i remove it. As...

Dear Rob I thank you alot for the effort you're making for me. I have tried doing what you have suggested, but when i try to use adaptive remieshing rule, it does not let me do it and gives a message of (that orphan meshes cannot be changed) and it does not let me delete the mesh for some...

here is the second attacment for the graph i am trying to ger. Best reagrds http://files.engineering.com/getfile.aspx?folder=13cd0be9-e201-4470-8929-dfb3cde66db3&file=graph.docx