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Maybe this is too late, but I had this problem recently and resolved the issue, here's what I did: 1) In the solution information, locate the error, it should state your error as well as the real set number that this is occurring in. Copy or write down that real set number. 2) Load up the...

Thanks for your input. Could you advise which standard is being referenced in regards to the radius of the keyway of a profile cut? ANSI B17.1?

Hello All, I am investigating the safety factor for a keyed shaft under constant torsion and reversed bending, but questions keep coming up: Our keyways are machined using an end mill, which produces a very sharp radius at the fillet. I know there is no such thing as a zero radius, but this is...

Hello All - I have been searching for the endurance limit of 1045 cold-drawn steel bar but have thus far been unsuccessful. Does anyone know where I can search or have a source I could reference to get this value? Thank you.

I appears that Peterson's Stress Concentration Factors is the superior reference literature for this topic. I'm thinking that I should be able to acquire the stress concentration factor from that source and directly apply it to the safety factor equation in my previous post. Thanks!

I just realized that I should also provide the efficiency calculation. e = 1 - 0.2(w/d) - 1.1(h/d), where: e = shaft strength factor (efficiency) w = width of keyway d = diameter of shaft h = depth of keyway = thickness of key / 2 I have also included the modified calculation I mentioned in...

Thank you all for your responses. JJPellin - I searched through the database and could not find a paper covering this topic specifically. dhengr - I appreciate the input and completely agree with your summary. I was hoping (naively perhaps) that there were established stress concentration...

Hello All, I was hoping someone could shed some light on the effects of a single square keyway on a solid shaft that experiences steady torque and a reversed bending moment, such as a pulley shaft. In my engineering books I have not found any mention of accounting for keyways, only changes...

Is it possible to replace the watermark in ANSYS v15.0 workbench with something more personalized? I know in previous versions this was possible as explained below: There is a file in the installation folder called ANSYS_150.png that contains the watermark image used in DM, Mechanical, Meshing...

I ran this sample model in ANSYS, I was actually able to avoid using APDL and keep it in workbench by integrating the macro code as a Command instead. All works great, but fundamentally I have some questions. After extracting the loads and moments at the joint, the section modulus for the joint...

Thanks for the input Rick, I like your approach. I'm familiar with Weaver's paper and had considered getting his addon for ANSYS, but I would like to explore other techniques before requesting the $8,000 and justifying it to management. It seems to me that acquiring reaction loads from a joint...

Hello All, In my quest to determine the most appropriate method of static weld analysis with FEA I have come across at least a half dozen methods. All of these seem to have their own merits but I can rarely make them agree with each other, or even the hand calculations. To the point: I wanted...

Hello All, I have been searching for load ratings for various weld nut sizes. I feel like this information should be out there based on the nut size and the weld size, but I have so far been unsuccessful. If anyone has seen information like this, could you point me in the right direction...

You shouldn't need to define two contacts for a single location, that would be redundant. Simply define what you initially stated, with the smaller face as the source and the region it will come into contact with as the target. Under Definition -> Behavior you can set the contact to behave...

Could an o-ring's seal integrity be compromised if the sealing surface is powder coated? The gland would remain uncoated and machined to the appropriate surface finish, however the plate that bolts down and presses the o-ring into its gland would have a powder coated surface (as opposed to an...

Has anyone used the XLRotor software to design a drive system for a large industrial belt driven fan? I saw the recommendation for the software from the post below: thread384-103687 In evaluating the software it appears to be very useful, however I haven't seen anywhere in the tutorials or...

Perhaps this will clear up some of the confusion with the model. What I have is a C-shaped formed channel terminating at the web of another C-shaped formed channel. The orange line follows the intersection where nodes are aligned. This is modeled as a full seam weld completely around the C...

Thanks for the replay Corus. The point of concern to me is the stress near the curved region of the juncture; not so much the juncture itself. Following along the path of intersection, you can see relatively low stress up until you get to the bend. I don't see why it would be any higher at that...

Hello, I have a welded structure that I modeled using surface bodies. All bodies intersect at what would be welded joints and all lines are split to ensure node-to-node bonding. Something I typically see with models like these is that I have relatively high stress right where one of the members...

Hello, We’re performing pressure testing on an aluminum pressure vessel. What you’ll see in the attached image is that we have four samples that are tested as follows: 1) Burst test – Pressure increased until unit bursts 2) High pressure / low cycle 3) Low pressure / high cycle 4) Lowest...