Solder Joint - Tube Joint Calculation / Formula
Axial Load

Solder Joint Design Calculations

Solder tube in tube axial loading joint equations for stress intension, stress in shear, tensile stress in brazed joint.

Solder tube in tube axial loading

Joint allowable stress in shear

Joint allowable stress in shear

Shear stress in joint

Shear stress in joint

Strength check

t £ tA

Minimum step depth

Minimum step depth

Optimal Step Depth

Lopt = max {Lmin, L1}

where:

Lopt = max {Lmin, L1}

and the joint coefficient f:

for h1 < h2:

joint coefficient f:

for h1 > h2:

or h1 > h2:

Where:

SUS

joint strength in shear (psi) [MPa]

kS

shear safety coefficient

F

transferred force (lbs) [N]

d

diameter of inner tube or step diameter (in.) [mm]

L

step depth (in.) [mm]

SUb

tensile strength of basic material (psi) [MPa]

h1

tube thickness of inner tube (psi) [mm]

h2

tube thickness of outer tube (psi) [mm]

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