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~~Mechanics: Statics~~Mechanics Dynamics

TOC Force Moment Couple System of Forces Static Equilibrium~~Structure Analysis~~Distributed Force Friction Force Internal Force Moment of Inertia Virtual Work & Stability Short Summary

Structure Analysis~~Structure Truss~~Structure Frame Structure Machine

Structure Truss~~Planar Truss~~Space Truss

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        Planar Truss
    
 
        Summary of stability and determinacy of planar truss:

Planar Truss

Summary of stability and determinacy of planar truss:

Truss	m, n, R	m>=2n-R	Remarks
	5,4,3	5=2(4)-3	stable determinate
	11,7,3	11=2(7)-3	stable determinate
	13,8,3	13=2(8)-3	improper truss member unstable - internal
	10,7,4	10=2(7)-4	improper truss member improper constraint unstable - internal
	4,4,3	4<2(4)-3	improper truss member unstable - internal
	11,7,2	11<2(7)-2	improper constraint unstable - external
	10,7,3	10<2(7)-3	improper truss member unstable - internal
	6,4,3	6>2(4)-3	improper truss member indeterminate - overrigid
	11,7,4	11>2(7)-4	improper constraint unstable - external
	11,7,4	11>2(7)-4	improper constraint stable indeterminate -overconstrain
	12,7,3	12>2(7)-3	improper truss member stable indeterminate - overrigid

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ID: 120300006 Last Updated: 3/7/2012 Revision: 0 Ref:

References

I.C. Jong; B.G. rogers, 1991, Engineering Mechanics: Statics and Dynamics
F.P. Beer; E.R. Johnston,Jr.; E.R. Eisenberg, 2004, Vector Mechanics for Engineers: Statics

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