Spline → Helix → Plane ZY, Start and End Radius: 0cm, Subdivision: 60, Number: 2
Parent Cloner over Helix → Mode: Radial, Plane ZY, Count 4, Raidus 12cm →
Add Soft Body Tag
→ Soft Body → Springs: Structural: 50, Dampling: 0% → Shear 0%, Dampling 0% → Flexion 10, Dampling 0%
Set Dynamics in Project setting as 0cm gravity → Expert tab: Steps per Frame:6, Max Solver Iterations per Step: 12 (affect the strength of stretching effect)
Select the Soft Body tag → Simulate → Forces → Field Force →
still in Field Force layer, add Spherical Field (next to Bend icon) on top of Field Force layer
In Field Force layer → Object: Strength: 3; Field Size: 20cm → Remapping → Inner Offset 94%
In Soft Body → Dynamics → Set Initial state on timeline where the stretch just starts (87th F) → Cache → Bake Object
In Cloner → parent Connect over it → add Spline Circle → add Sweep parent over spline circle
→ drag the Connect layer child under Sweep, Circle spline in between
Circle layer: Radius 1cm