Example 2:Remove or cut? inX,+8nX2+…+dxn+ 5h*￥￥十 =0 n ×D= 3E7 6 6 11 2 δm E75×2I×2× ×2)= 81 3EI EA +*,262 48E7 PI 11P3 8E713 Example3:Elongation(伸长)plus bending -50 -50 +250 +25 61X1+d1=0 480 213 8t=3E 4,-》a@7+2ew -24525X-1-25+0x×1x1 =-320al 同©大学 土亦工程学院 14