CAP SCREW BOLTED JOINT: STIFFNESSES OF COMPONENTS

SI/Metric Units


INPUT   DATA

Title  

Nominal diameter of cap screw, d mm

    

X-section area of threaded portion of cap screw, AT mm2
Modulus of elasticity of cap screw, Eb   109N/m2 
Thickness of washer, tw mm  
Diameter of washer, D mm
Thickness of member #1, t1 mm
Modulus of elasticity of member #1, E1   109N/m2 
Thickness of member #2, t2 mm
Modulus of elasticity of member #2, E2   109N/m2 
Cone angle of frustrum, α °


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RESULTS

STIFFNESS   Values   Units
 ♦ Threaded portion of cap screw, kT   1203.67 106N/m 
 ♦ Overall stiffness of cap screw, kcap screw   1203.67 106N/m 
 ♦ Stiffness of frustum #1, k1   7986.1 106N/m 
 ♦ Stiffness of middle frustum, km   31231.71 106N/m 
 ♦ Stiffness of frustum #2, k2   5701.8 106N/m 
 ♦ Overall stiffness of frusta, kmembers   3006.44 106N/m 

 ♦ Middle frustum thickness, tmiddle   5.5 mm   , from member 1