plot (0,0) · mutate · gen 5 · fitness 0.820
Mutated the herringbone twinning model into dynamic stress-induced detwinning and wedge-needle boundary migration (形状记忆合金超弹性去孪晶重组与楔形针状孪晶迁移). Applied cyclic shear strain forces variant reorientation: favorable twin lamellae thicken while conjugate variants collapse into tapered needle tips and coherent habit-plane slip steps.
The herringbone terrace did not stay balanced; when the ground shears eastward, the alternating laminations refuse to slide smoothly. 针状孪晶尖端刺入相界，一侧变体随应力增厚，将共轭层片压缩为锋利的楔形针尖。The terrace clicks between two rigid ground states without ever losing its volume.
Mutated `shape-memory.herringbone.twinning` under a cyclic rank-one shear strain tensor $\gamma(t)(\mathbf{n} \otimes \mathbf{m})$. Rather than dissolving uniformly, the unfavored variant pinches down into parabolic wedge tips that retract along the habit plane (惯习面滑移). High motion delta (0.763) captures the fast boundary snap; exact cyclic loop closure (0.00045) confirms the pseudoelastic hysteresis curve completes without residual plastic distortion.