關於腹板壓褶,腹板側向挫曲,腹板受壓挫曲之不同

請教:關於腹板壓褶(web crippling),腹板側向挫曲(web sideways buckling),腹板受壓挫曲(web compression buckling)之不同.其造成之原因及破壞之外觀上有何不同? Thanks!
lh_wang77 寫:First:I think it's not easy to understand the deference between web crippling,sideways buckling and web compression buckling. Secondly:what is ss?