:=(bf*h^3-(bf-tw)*(h-2*tf)^3)/**********.3mm^4计算抗弯截面模量W=2*I/^3计算根部弯矩M=N*e148500000N-mm弯曲应力计算s=M/^2s<315OK!=h1+h2*d/(d+e)=(bf*h3^3-(bf-tw)*(h3-2*tf)^3)/**********.6mm^4计算静面矩S=bf*tf*(h3-tf)/2+(h3/2-tf)^2*tw/^3计算最大剪应力t=N*s/(tw*I1)^2t<185OK!=N/(tw*(h-2*tf))^2腹板边缘弯曲应力s1=s*(h-2*tf)/^2腹板边缘折算应力s(max)=SQRT(s^2+3*t^2)^2s<315OK!=s*tf*^2翼板焊缝高度hf1=F/(*(2*(bf+tf)-tw)*s2)=N/(2**(h-2*tf)*s2)
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