Hey, I'm learning a bit about wood but have gotten a bit stuck when it comes to deflection. You see, I'm supposed to perform a deflection check on a wooden beam that is affected by a certain amount of kN/m above, but I'm a bit unsure about WHAT deflection actually is. I've been referred to Swedish Wood and their book "Dimensionering av träkonstruktioner Part 2," but the pages I've been referred to cover both deflection and vibrations.
I'm fairly sure that deflection is the bending of the wooden beam and not vibrations, but I want to be completely sure.
I'm fairly sure that deflection is the bending of the wooden beam and not vibrations, but I want to be completely sure.
Hello and welcome to the forum!
Svikt in everyday language should be what is referred to as deflection in the more dry technical literature
Svikt in everyday language should be what is referred to as deflection in the more dry technical literature
Deflection = bending (mm).
Stress is also commonly discussed when designing beams (N/mm^2 or MPa).
Stress is also commonly discussed when designing beams (N/mm^2 or MPa).
It might also be worth remembering that this deflection requirement is not about strength, but rather because it looks unsightly when load-bearing beams sag like a banana.G Gabbe1 said:
Of course, it can also be practical for the height to be more or less constant, so you can fit a door under the beam without it being squeezed and becoming difficult to open.
I don't know if there is any formal definition, but in my mind, svikt is a (elastic change in) deflection caused by a load of a highly temporary, and often also contextually specific, nature, i.e., it includes only the deflection caused by the temporary load.
That is, one talks about something sviktar when walking on it, but hardly that something sviktar due to its own weight.
So there may be reason to go back to the questioner and ask them to specify what they mean by svikt.
That is, one talks about something sviktar when walking on it, but hardly that something sviktar due to its own weight.
So there may be reason to go back to the questioner and ask them to specify what they mean by svikt.
Yes, I would also like to claim that it is the difference between "svikt" and deflection.