Interactive Injection Molding DFM Simulator
DFM CAE Analyzer

Injection Molding DFM Rules Simulator

Interactive virtual workshop analyzing wall thickness, rib ratios, and undercut release mechanisms.

Active Module WALL THICKNESS
Part Shrinkage 1.50% (Standard)
DFM Parameter Modules
MOLD JOINT / PARTING LINE A: NON-UNIFORM WALLS (POOR) Massive Cross-Section Delta SINK MARK ON COSMETIC FACE INTERNAL VACUUM VOID B: CORED-OUT UNIFORM WALLS (GOOD) Uniform Wall Taper maintained Uniform Shrinkage
(No Hotspots)

DFM Mechanical Diagnostic Checklist

Analyzing nominal wall thickness boundaries: Maintain cored-out thin walls to prevent hot spots, voids, and shrinkage-driven warpage.

DFM Design Specifications Module 1 of 3

Wall Thickness Rules

Uniform wall thickness is the single most critical rule of injection molding part design. Non-uniform walls lead to unequal cooling rates, internal voids, sink marks on cosmetic faces, and massive structural warpage.

CAE DFM Telemetry

Thickness Ratio 1:3 Ratio (Bad)
Sink Risk Factor Critical
Cooling Overhead +220% Delta
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Veteran DFM Design Rule

“If a thicker wall section is absolutely necessary for mechanical structural loading, always use a smooth transition taper at a 3:1 ratio to prevent localized stress concentration and flow front hesitation.”

Mathematical Design Formulas

Rule of Square (Cooling time $t$): $$t \propto s^2$$ Cooling time increases quadratically with wall thickness $s$. Doubling wall quadruples cooling time.
Rib Thickness Ratio Rule: $$T_{rib} \approx (0.5 \sim 0.7) \times T_{nominal}$$ Prevents mass concentrations at the rib intersection to avoid cosmetic sink marks.
Viewport: CAD Cross Section Class: SPI-101 Production Grade