cyclic loads on a beam
cyclic loads on a beam
(OP)
If a beam is to be subjected to a load of, say 20 kN, in a series of 5 cycles, is it sufficient to use a pseudo time-dependent load of the form below,
¦
¦ /\ /\
¦ / \ / \ and so on, until 5 cycles
¦/ \/ \
OR, loads of +20kN must be followed by -20 kN for 5 cycles,
OR, one has to actually use a displacement-controlled strategy with positive and negative prescribed displacements at the loaded points in the form of,
+5 mm (assuming this would result in a total reaction load of 20 kN), followed by -5 mm,
OR, none of the above is right/appropriate? Any suggestions is highly appreciated.
¦
¦ /\ /\
¦ / \ / \ and so on, until 5 cycles
¦/ \/ \
OR, loads of +20kN must be followed by -20 kN for 5 cycles,
OR, one has to actually use a displacement-controlled strategy with positive and negative prescribed displacements at the loaded points in the form of,
+5 mm (assuming this would result in a total reaction load of 20 kN), followed by -5 mm,
OR, none of the above is right/appropriate? Any suggestions is highly appreciated.
azmi ibrahim
azmi@civil.engr.itm.edu.my
I'm always keen to learn more to advance
myself in areas that I'm interested in.





RE: cyclic loads on a beam
GoodWishes
RE: cyclic loads on a beam
RE: cyclic loads on a beam
If it is not plastic then it will not matter if you have one or 5 cycles.