Determine the forces using virtual work(unit force method)

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SUMMARY

The discussion focuses on determining forces in a multispan beam using the Principle of Virtual Work, specifically the unit force method. The user expresses difficulty in applying this method to analyze the BC member of the beam, noting that while they can calculate the vertical reaction force (Yc), they struggle to utilize the unit force method effectively. The conversation confirms that this is a homework problem, emphasizing the need for clarity in applying virtual work principles in structural analysis.

PREREQUISITES
  • Understanding of multispan beam analysis
  • Familiarity with the Principle of Virtual Work
  • Knowledge of calculating reaction forces in structures
  • Experience with structural mechanics concepts
NEXT STEPS
  • Study the application of the unit force method in multispan beam problems
  • Review examples of the Principle of Virtual Work in structural analysis
  • Learn about calculating moments and forces in beams
  • Explore advanced structural mechanics textbooks for deeper insights
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Students and professionals in civil engineering, structural analysis practitioners, and anyone tackling homework problems related to beam forces using the Principle of Virtual Work.

daphnelee-mh
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Summary:: Require to determine the designated forces using principle of virtual work ( unit force method )

I have no idea how to determine the multispan beam using virtual work, if I start to analyse the subsidiary portion BC member, the Yc can be calculated and following by the Ma... it seems don’t involve the unit force method
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I use the Principle of Virtual Work quite often, but I have to say that I do not see a simple way to employ it here. Is this a homework problem? If not, who cares what method is used?
 
Yes, this is a homework problem, I know how to solve it if don't use virtual work method, but now I only can find the Yc
 

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