Actually, European military swords prior to the introduction of the firearm were straight bladed weapons with relatively simple guards. Quite similar to the equivalent swords in early Japan.
Like the Japanese katanas, the European swords were designed to smash past armour, and to deal damage by percussion, as well as cutting.
The rapiers and smallswords weren't introduced until the Age of Armour was either gone, or on it's way out. An interesting article on rapiers can be found here: http://harpo.acc.iit.edu/~goldpul/rapier.html
Somewhere back in the musty remnants of my memory, I seem to recall that the distinctive curve of the katana was due in great part to the effects of the two different metals of the blade contracting differently as they cooled after forging, however, you may want to check that.
As far as the defeat of the Japanese swordsmen by the European rapier men, as a SHAG*, it can probably be laid at the feet of a variety of factors.
Near as I can tell, the average length of a katana is 24 inches, compared to 36-40 inches for a rapier. This gives a bit of a length advantage to the European fencer. I don't know the average weight of the katana, but the rapier varied from 1 pound 12 ozs to just over three pounds. This gives the European a light, quick, flexible weapon, which would allow him to keep the samurai at bay while simultaneously dealing multiple puncture wounds.
I would think that the differences in stance, might also have an impact, but I don't know enough about kenjutsu stances to make an educated guess.
LawDog
*Scientific Hairy-A**ed Guess
Like the Japanese katanas, the European swords were designed to smash past armour, and to deal damage by percussion, as well as cutting.
The rapiers and smallswords weren't introduced until the Age of Armour was either gone, or on it's way out. An interesting article on rapiers can be found here: http://harpo.acc.iit.edu/~goldpul/rapier.html
Somewhere back in the musty remnants of my memory, I seem to recall that the distinctive curve of the katana was due in great part to the effects of the two different metals of the blade contracting differently as they cooled after forging, however, you may want to check that.
As far as the defeat of the Japanese swordsmen by the European rapier men, as a SHAG*, it can probably be laid at the feet of a variety of factors.
Near as I can tell, the average length of a katana is 24 inches, compared to 36-40 inches for a rapier. This gives a bit of a length advantage to the European fencer. I don't know the average weight of the katana, but the rapier varied from 1 pound 12 ozs to just over three pounds. This gives the European a light, quick, flexible weapon, which would allow him to keep the samurai at bay while simultaneously dealing multiple puncture wounds.
I would think that the differences in stance, might also have an impact, but I don't know enough about kenjutsu stances to make an educated guess.
LawDog
*Scientific Hairy-A**ed Guess