Introduction to Aircraft Structural Analysis (Elsevier Aerospace Engineering)

Problems 109

Fig. P.4.5

P.4.6 Usetheprincipleofvirtualworktocalculatetheverticaldisplacementsatthequarter-andmid-spanpoints
inthebeamshowninFig.P.4.6.

Ans. 57 wL^4 / 6144 EI 5 wL^4 / 384 EI (bothdownward).

Fig. P.4.6