Click here to load reader

趣味结构力学六题 东南大学单建教授

  • Upload
    fox6300

  • View
    1.388

  • Download
    0

Embed Size (px)

Citation preview

  • 1. 2. 3. 4. 5. 6.

  • 1

  • 2 ?

  • EAa

    2

    1

  • 1

  • 2

  • 3

  • 1234EAa

  • 4

  • 1. 2.

  • F

  • 5

  • 1 3 2 5 3 7 n 2n1n n

  • 6

    4.bin

  • 911

    20019117674111401

  • W1=2kN h20cm C W2=20kN l=6mEI=12.2104kN-m2

  • m =W1W2 / 2/ g 1224 kg = l3 / (48EI) 0.37104 m / kN

  • v = = 1.98 m/s v0= vW1 /W1W2/2= 0.33m/s y0 = Fw1 = 0.74104m ymax = = 22.2 104m FPe= ymax / = 60kN

  • 20cm 30 3m 1/5 6 630 1000