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Thanks All, If friction is not a consideration, then assuming that there are tension and shear forces applied to the joint, then only the shear component needs to be taken into account (Total shear/#Rivets)?

Hi, Is is appropriate to consider the the joint friction coefficient when the joint is held together with rivets? I use it when talking about bolted connections and would have thought it would not be too dissimilar in riveted connections While I am on the subject what coefficient would be...

Hi All, Is there any way of making hyperlinks CTRL+CLICK like in word? Cheers Tom

Desrtfox "Are you okay with the Mohr circle?" Not really but I have taken too much of your time already. I'll try to work out how it applys for my example Thanks Tom

Desertfox, Sorry i didn't read it properly i see that u = moment/2*(L1^2 + L2^2) Excellent, thank you Tom

Desertfox Many thanks for the excellent reply. The tension in x was because i was looking individually if the forces were acting in all 3 planes seperatley - I think!! Where does the 6.037 come from in your calculation? I'd be interested in the Mohrs circle, i will look it up, unless you have...

Thank Desertfox Guys just one last thing. I have looked at all of the tensions and shear in all directions(see attached PDF), But 1) How so I apply the combined shear and tension (Rt^2+Rs^2 = 1/RF^2) and see if M6 Grade 8.8 bolts would be acceptable? 2) What if I had to calclate for combined...

Thanks rb1957 I was just looking at the NASA fasteners design manual which describes combining loads as you replied So in my example Tension Load = ((100 * 9.81) * 200))/200 * 2 = 490.5 Shear Load = 100 * 9.81 / 4) = 245.25

Okay sorry I will try to describe a bit better Assume a flat plate 300mm x 300mm x 3mm Aluminium rigidly mounted to a wall(not interested in the fixings in this example, just assume it is bonded). Now, assume a mass of 100kg mounted to this plate by 4 bolts on a 200 x 200 pattern (equal about...

Hi, In my industry (Rail), we use a lot of structural adhesives, nameley Plexus and sometimes Sikaflex. I have a sample of an Aluminium lap joint bonded with Plexus sat on my desk, which everyone likes to give a good bending every visit. It must be 3 years old now and the aluminium is just...

Hi, I am interested in developing some simple software for our company to aid in the selection of bolts, ideally using the VDI 2230 and interested in anyones ideas for what to include. Basically I design simple L-Brackets with the back part fixed to walls and horizontal part of the bracket...

cbrn Agree with your point about China and I hadn't considered the Autocad case. I thought it was down to the fact that all other 2D CAD at the time was inferior. I personally think that software houses turn a blind eye to students using pirate copies for exactly the same reason, so they in...

Hi Probably not good for your application Bigeads are usually laminated into the grp to provide a usable fixing from the A side (clean GRP surface) Might be still worth a look though www.bighead.co.uk

Can adhesive be modelled when only the Tensile and shear strength is known? I am wondering whether you could create a material in 3d and model the adhesive as a 3mm slab under the structure in question, ready for analysis Thanks Tom

I agree it is an "illegal site". I appreciate that using pirated software is wrong and its priced the way it is because of development costs, but consider this; Here on this side of the pond we loose orders because it is cheaper to resource both materials, labour and design in the far east...

Hi Lorens, I used to use Bighead fasteners on GRP panels for train parts. These may be of help Tom

Mr Vessels, Thank you very informative Tom

Sorry should have explained that a little clearer I have written guidlines/standards (call them what you like), defining standards to adhere to when drawing in 2D which details things like layer types/ text size dimensioning philosophy etc. What i havent writen previously is a generic 'best...

Hi all, I am after references to any existing standards pertaining to 3D CAD modelling. Basically I want to write a procedure for our company and thought that procedures used within the Aircraft industry probably exist and are of a high standard Tom

Spongebob, Thanks for the very informative post Can I just clarify. (1). Make sure the 2nd mode is at least double the fundermental to classify the structure as 1DOF - Then use dynamic load factor curve to give amplification factor (2). It doesnt matter what ratio the shock pulse to...