Transcript Engineering Graphics

Structural Drafting
Shear stress in Bolts
Shear stress in Bolts
Fastener Loads and Stresses
Load:
External force applied to a member.
Stress:
Internal force acting on a member.
Strain:
Change in size or shape of a material
caused by stress.
Shear stress in Bolts
Types of Stress:
Axial tensile stress
Axial compressive stress
Shear stress
Bending stress
Bearing stress
Web crippling compressive stress
Shear stress in Bolts
General Stress Equation:
Allowable Stress (lbs/in2) = (load (lbs))/(cross sectional area (in2))
Allowable Stress =P/A
Structural Equation (single shear):
Fv = rv /ab
Fv = allowable shear strength (kips/ in2)
rv = allowable shear value (kips)
ab = cross sectional area of shear plane of bolt (in2)
Shear stress in Bolts
General Stress Equation:
Allowable Stress (lbs/in2) = (load (lbs))/(cross sectional area (in2))
Allowable Stress =P/A
Structural Equation (double shear):
Fv = rv / 2(ab))
Fv = allowable shear strength (kips/ in2)
rv = allowable shear value (kips)
ab = cross sectional area of shear plane of bolt (in2)
Shear stress in Bolts
Single Shear:
Bolts stressed on one
transverse section
Structural Equation (single shear):
Fv = rv /ab
Fv = allowable shear strength (kips/ in2)
rv = allowable shear value (kips)
ab = cross sectional area of shear plane of bolt (in2)
Shear stress in Bolts
Double Shear:
Bolts stressed on two
transverse sections
Structural Equation (double shear):
Fv = rv / 2(ab))
Fv = allowable shear strength (kips/ in2)
rv = allowable shear value (kips)
ab = cross sectional area of shear plane of bolt (in2)
Shear stress in Bolts (Table 7-1)
Shear stress in Bolts (Table 7-1)
Shear stress in Bolts (Table 7-1)
Shear stress in Bolts (Table 7-1)