Lecture 2: Stability and Determinacy of Structures

Example 4: 

Here, 

   Number of unknown =6

   Number of available equations = 3

                 ID = | number of unknown - number of equilibrium condition|

                      = 6-3 =3

                 So, the structure is Stable and Externally indeterminate to 3rd degree

Example 5: 

Here,   

 

   Number of unknown =4

   Number of available equations = 3

   ID = | number of unknown - number of equilibrium condition|

        = 4-3 =1

   So, the structure is Stable and Externally indeterminate to 1st degree

 

Example 6: 

Here,   

 

   Number of unknown =8

   Number of available equations = 3

   ID = | number of unknown - number of equilibrium condition|

        = 8-3 =5

   So, the structure is Stable and Externally indeterminate to 5th degree

 

 

 

Important Links: 

         Lecture 3: Stability and Determinacy of Structures

         Lecture 1: Stability and Determinacy of Structures

 

 

 

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