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Stress Eng, for the validation I don't use wheels' geometry. I only use reaction forces from brackets supports that I get from an FEA. This is because I assume that wheel's eccentricity wouldn't make a significant impact on loads distribution between ball bearings. 3DDave, please find couple...

Hi everyone, Thank you so much for taking your time on sharing ideas and insights! I'm very happy with the activity level. I will try to explain more in detail regarding the situation. I'm trying to design a trolley that will be used on rails. On the trolley there will be placed a container...

Hello Stress Eng, Please find the boundary conditions for the wheel bellow. The wheel's capacity declared by manufacturer is 30 kN. The loads F and F_2 are evaluated from the FEA of the frame.

Hi everyone, I'm planning to use fixed castor flanged wheels (1st picture bellow). The wheel itself has two bearings inside the wheel (2nd picture bellow). The rated load capacity for wheel is 3 tons. For example if I'm gonna load wheel with force that is not symmetrical in a view of wheel...

kingnero, thank you very much! It seems that this topic is really more complicated than just reading some online pdfs. Just to be sure, do I understand correctly that the MRTs stand for the Material Test Reports?

kingnero, thank you so much, that makes a lot of sense! Could you recommend some resources where I can find information on preheating requirements for S235 and S355 steels? I would like to have a better understanding on which thicknesses the difference starts to take the impact for choosing...

Hi SWComposites, thank you for joining the thread! Currently I'm looking for the answer generally for the industrial equipment. Some of the equipment has to encounter fatigue loads, and some don't. All the time I thought that S235 steel is cheaper than S355 steel. Recently I got the news that...

HTURKAK, thank you for the answer. I really want to fully understand the situation, for this reason please find some insights below and correct me if I'm understanding something wrong. For the stiffness I was referring to Young's modulus which is the E. According to EN1993-1-1 §3.2.6 both S235...

HTURKAK, thank you for your reply and attached document, I really appreciate that! To be honest in the attached document I wasn't able to find an explanation why S235JR is better choice for stiffness, buckling and fatigue requirements. As I understand both steel grades S235JR and S355JR has the...

Hi everyone, I have a question regarding the S235JR and S355JR structural steels. I have noticed that when manufacturers evaluate structures' prices there are basically no difference in price between S235JR and S355JR steels. For this reason the question arises why to choose S235JR steel rather...

human909, thank you so much, that really makes a lot of sense! For some reason when I was thinking about I-sections and channels resistance to bending, I was only taking into account that these sections has an advantage (comparing to tubes, etc.) only because of the ratio between element height...

human909, I would like to better understand why an angle is more efficient than a plate stiffener? Is it due that the plate stiffeners require laser cut/water jet, or for some other reasons?

Thank you everyone for the insights, I really appreciate that! human909 and Stick., thank you for such deep analysis on different hopper designs, that helps a lot!

Hi guys, I have a question regarding the design of stiffening plates/elements on sheet metal walls. During all kind of analysis of designed equipment that uses stiffening plates/elements I came across different solutions and I would like to better understand why those solutions may be used. As...

Hey guys, Thank you for sharing your experiences and insights! In this particular case I'm interested into ISO 1101.

Hey everyone, Recently I decided to learn and try to apply the GD&T & Tolerances in my designed products. For this reason I want to ask you guys, how did you started to learn those things? Perhaps you could share some insights from your experience where to start, what is important, in what way...

Hey guys! Thank you for all the comments, suggestions and answers! Nevertheless the problem seems fairly simple, for some reason it was difficult for me to believe, that roller (R2), being on other side will act against other roller (R1). After your comments there are no doubts left. Thanks!

Hey everyone, I have a fairly simple question, but just wanted to make sure that I'm not missing something out. There is a beam that on one end is supported by two roller supports, on another end there's applied a load. I'm wondering if the reaction force R2 gonna be R2=F, and the reaction...

I found couple of examples where it seems that tab and slot joint was used for joining parts. This is water cooled structure (double wall) and from how many tabs there are used, I believe that those were not used only for alignment/fixture.

Hey everyone, Perhaps someone has the information regarding how to design tab and slot connection in steel structures (dimensions of the joint)? During a briefly research I wasn't able to find any general rules or guidelines of the design. If someone have any information about the tab and slot...