所屬欄目:常用金屬材料材重速查速算
序號(hào)鋼材類別截面面積計(jì)算公式代號(hào)說(shuō)明1圓鋼、圓盤條、鋼絲F=0.7854d2d—外徑2方鋼F=a2a—邊寬3圓角方鋼F=a2-0.8584r2a—邊寬,r—圓角半徑4六角鋼F=0.866a2=2.598s2a—對(duì)邊距離s—邊寬5八角鋼F=0.8284a2=4.8284s26等邊角鋼F=d(2b-d)+0.2146(r2-2r12)d—邊 ......(本文共 444 字 ) [閱讀本文] >>