Bolt hole thickness and washer thickness
Bolt hole thickness and washer thickness
(OP)
i have a skid made of a plate with a certain thickness and modeled with shell elements (no solid element used in the model). The question is do I need to apply the thickness of the washer to the thickness of plate at bolted connections to improve the bearing strength of the skid at bolt holes? Currently the bolt holes edge fail under specified loading condition and no washer/nut/bolt head/bolt clamp force etc. take into consideration. Is it a common practice to add the washer thickness?





RE: Bolt hole thickness and washer thickness
RE: Bolt hole thickness and washer thickness
RE: Bolt hole thickness and washer thickness
RE: Bolt hole thickness and washer thickness
or adding a Steel bush
RE: Bolt hole thickness and washer thickness
2) you should not be looking at peak stresses at the edge of the hole. Your material bearing strength allowable probably was calculated from test data as a P/dt stress. You should extract the fastener load from the FE model and calculate a P/dt bearing stress to compare with the material allowable.
RE: Bolt hole thickness and washer thickness
Never take the fastener hole edge stresses from a model as they are notoriously unrealistic. No matter how well modelled the mathematical processes involved within the FE leads to bad answers when comparing to reality
RE: Bolt hole thickness and washer thickness
ht
"Sheesh. Some days it just doesn't pay to get out of bed."