Module 6 : Influence Lines
Lecture 5 : Müller-Breslau Principle

 

 

Example 6.4 Construct influence lines for , , and for the beam AB in Fig. E6.4.

 
 
Solution:
                                         
 

System 2 for : (Note that there is no bending moment at D , i.e. )

                                              
  System 2 for :
                                                 
  System 2 for : (Note that only contributes to virtual work because even though there is rotation at point D , )
                                                  
  The deflected shape in each system 2 provides the influence line for the corresponding response function.
 

 
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