Register to reply 
Solving trusses with the Direct Stiffness Method 
Share this thread: 
#1
Mar2814, 12:34 PM

P: 5

I'm creating a computer implementation to solve planar trusses. And I'm not sure how to check if the truss is solvable or not. Can you help me with that?
In my implementation, the trusses are created randomly (needs to be this way), so i get a lot of unstable or indeterminate trusses. I want to discard bad trusses without calculating the determinant of the stiffness matrix or trying to solve them. Is this condition enough to discard such trusses? If I filter the trusses with this criteria, will i lose some good ones? > 2j = m+r j  number of joints m  number of members r  number of reactions Thanks. 


#2
Mar2814, 04:54 PM

Sci Advisor
HW Helper
P: 2,124




Register to reply 
Related Discussions  
Problem in finite element method using direct stiffness method  Engineering, Comp Sci, & Technology Homework  2  
Method of Pins Trusses (conceptual)  Introductory Physics Homework  2  
Trusses Analytical Method.  Engineering, Comp Sci, & Technology Homework  1  
Direct Stiffness Method 2D Frame  Linear & Abstract Algebra  0  
Problems involving trusses using method of joints  Engineering, Comp Sci, & Technology Homework  5 