CNF Rear Geometry

Tension Analysis Methodology

How CNF computes zone tension from cloth-body distance fields, curvature, and seam stretch data.

Core Tension Equation

T_j = a · max(0, d_target − d_j) + b · Îș_j + c · Δs_j
  • a — distance-gap penalty weight
  • b — curvature influence weight
  • c — seam stretch weight
  • d_target — desired cloth-body clearance
  • d_j — sampled cloth-body distance
  • Îș_j — local curvature
  • Δs_j — seam stretch delta

Tension Zones

For denim rear geometry, three critical zones are tracked:

  • Upper seat — yoke and upper seat panel tension
  • Side seam — inseam/outseam junction stress
  • Thigh — thigh-to-seat transition tension

Vicente Cohort Targets

ZoneMax Tension
Upper seat0.15
Side seam0.18
Thigh0.16

Pattern engineering iterates on seat ease, thigh ease, yoke angle, and rise curve to keep tension within these bounds.