Bonded Rubber Disk — Molding Shrinkage and Shear Strains
Shrinkage
Build FE model and solve cooling shrinkage
Units
lbs & inches & °F
N & mm & °C
Rubber Shear Modulus, G
Thermal CTE (per °F or per °C)
Mold Cavity OD
Mold Cavity ID
Mold Cavity Height
Geometry
Cylinder
Straight cone
Curved cone (two-k: k_out & k_in)
OD @ z=0
OD @ z=H
ID @ z=0
ID @ z=H
Outer curvature k_out (− concave … + convex)
Inner curvature k_in (− concave … + convex)
End condition
Bonded ends (z=0 & z=H fixed)
Free ends
Molding Temp
Room Temp
Deflection Scale (visual only)
Export JSON
Export CSV
Exports original & cooled outlines
Original geometry (live preview, full −r…+r)
Solved overlay: BEFORE (blue) + AFTER (red) in r–z
Ready
Before outline
After outline (FEM, deflection-scaled)
Shear γ
rz
(low→high)
Resultant displacement |u| contours (r–z view)
|u| magnitude (blue → red)