BOLT & NUT BOLTED JOINT: STIFFNESSES OF COMPONENTS

SI/Metric Units

INPUT   DATA

Title  

Stiffness of bolt, kb 106N/m 

    

Stiffness of members, km 106N/m 
X-section area of threaded portion of bolt, AT mm2
External load on bolted members, P   N 
Bolt strength, Sproof   106N/m2 
Endurance limit of bolt material, Se   106N/m2 
Ultimate tensile strength of bolt material, Sut   106N/m2 
Yield strength of bolt material, Sy   106N/m2 

Joint type   Permanent   Disassemblable  

       Reset

RESULTS

STIFFNESS   Values   Units
 ♦ Joint constant, C   0.284  
 ♦ Bolt preload, Fpreload   84780.0 N 
 ♦ Load factor, nload   1.845  
 ♦ Factor-of-safety against separation, nseparation   6.575  
 ♦ Alternating stress on bolt, σa   16.262 106N/m2 
 ♦ Alternating strength of bolt, Sa   39.009 106N/m2 
 ♦ Fatigue factor-of-safety, nfatigue   2.399  
 ♦ Mean stress on bolt, σm   556.262 106N/m2 
 ♦ Factor-of-safety against yielding, nyield   1.153