promotion image of download ymail app
Promoted
Anonymous
Anonymous asked in 科學其他:科學 · 1 decade ago

Poisons’ Ratio為何要加個負號?

還有6061型鋁材的波松比值為多少

以應變計所測量的值為何一正一負???

1 Answer

Rating
  • 1 decade ago
    Favorite Answer

    鋁的poisson's ratio應在0.32~0.34間,strain gage有正負應該是二個應變計黏貼方向不同所致。一個測量軸向、一個測量橫向。如果是拉伸試驗,那麼軸向拉長變正,橫向受poisson's ratio影響向內擠壓縮短,所以為負值。

    • Commenter avatarLogin to reply the answers
Still have questions? Get your answers by asking now.