Recent content by DimzK

The spinning object should apply a torque on to the suppoting element I would have thought? which is best represented using a bending moment, where we know the direction of the loading...rotational mass does not seem to indiciate the direction...

Hi Everyone, I have a simple question on modelling of rotational mass in a structural model (with kg x m2 units) . I have just come across a model with rotational mass inputted in to certian nodes. I understand the need for nodal mass modelling (at a fundamental level) as this will effect...

@thomas - thanks for that explanation, you have put me in the right direction, cheers!

@SWComposites - I have contacted them, but I have not been able to get through to the hiring technical manager via HR thus far...whilst I wait, I thought I will seek other engineer's opinion.

Hi All, I will be moving to the UK shortly to start working as a Bridge Engineer for a consultancy where I am expected to do load ratings and bridge/gantry rehabilitation works. My previous/current experience has been in New Zealand and Australia. Can I check what documents I need to be...

Hi Guys thank you very much for the input, and Dik I am going to install Smath and have a look at what you did. I have never used Smath before.

Thanks Dik, for your input, I am still missing the vital bit I need to get the section modulus. I may have to go for the old method of picking Ixx / distance from centroid to extreme comrpession/tension fiber, <- and guess the extreme points

Hi all, I have a simple mechanics of solids type question which I have been googling, but I have not been able to find an answer. I have an irregular shaped section with bending moments imposed about its X axis as shown below. The centroid of the shape coincide with the x=0 aand y = 0 of...

Thank you for that explanation, so if this was a traditional upside down T type retaining wall with heel and toe, I am better off using the kp for levlled ground. Where as for an embedded retaining wall, it is more appropriate to use Kp calculated using sloping ground , say in the case of...

Hi All, I am a structural engineer and I have a simple Geotech question. Where there is a ground slope on the active side of the retaining wall, that increase thee Ka value when using coloumb theory. But when the ground slope on the passive side is flat (horizontal), is it reasonable to also...

All, thank you for your response. I have some idea on it now! Cheers.

I have been trying to google this and I am getting some ideas, but if someone can explain this difference between coupled vs. uncoupled natural period in MDOF analysis for 3D models, that would be great. Just to add some context to this, I am trying to understand the seismic analysis of...

Ok it is clear that with two pin connections, it is statically indeterminate and as such, it is hard to solve by hand. So I can see as many suggest if one of the supports are rollers, then there is not going to be any horizontal reaction. But suppose in a real life situation, this is a...

Thanks all, this is just a hypothetical structure. I am not building this in real life. Just reading the Canadian building code, there was some mention about being extra careful with inclined members that carry gravity loads that may impose lateral loads at supports. I am just going back to...

All, Thanks for the answers, it is clearer now.