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Hello friends I modeled a power screw and its nut in mechanical desktop and imported this model into ANSYS 13. I want to locate the stress concentration and also stress tensor over the screw. Attached photo is an overview of this model. 1- There is contact between screw threads and internal...

Thank you so much for your response. I imported geometry from MECHANICAL DESKTOP and ANSYS already recognized contact regions. I defined a frictional contact for contact between screw and nut and after some searches I found out in 'define contact details' section under 'advanced menu', if...

Dear George Thank you very much for your response. Actually, it is a lead screw which should change the rotation of the Nut to a linear motion to move 15 N force which is applied over it. I want to substitute the material of the lead screw which is stainless steel 304 with a special type of...

I tried to do a static structural analysis. My model consists of a lead screw, a nut and a pintle over lead screw. In reality Nut rotates around an axis (lets name this axis Y). Since lead screw supports are in such a way that it cannot rotate, this rotation causes the screw moves along the same...

Dear Onda Thank you very much I applied your advice and it was really helpful. About the contact analysis, if I want to have the contact forces, should I use MASTER/DBALL instead of XDB? and is there any other regulation which should be applied?

Dear Onda Thank you very much for your advise. As I mentioned before I think this could be the major mistake that I have made. I try to correct it using your comment. Could you please telling me how can I define the gravity value in Patran? Is it the Wt-Mass conversion in Solution parameters...

Dear dwallace1971 Thanks for your response and help. I don't think displacements are too large so that the non linearity be appeared in the results. Anyway thanks for your kind response

I have imported a precise model from mechanical desktop to Patran and did a linear static analysis. In this analysis I used following units: mm, kg, N, MPa the material that I have used was stainless steel 304 with tensile strength about 250 MPa. But the result shows a stress tensor with...