To alleviate the membrane and shear locking phenomena, the membrane strains and the out-of-plane shear strains are replaced with assumed strains in calculating the element strain energy.

为了避免膜闭锁和剪切闭锁，在计算单元应变能时，用假定应变代替膜应变和平面外的剪切应变。

youdao

Its second-generation Ankle Mimicking Prosthetic Foot (AMP-Foot 2.0) uses a pair of force sensors to determine the leg's relative position and let an actuator build energy when the foot bends, locking the power away to use only when the owner pushes off.

ENGADGET: AMP-Foot 2.0 prosthesis gives the power of real feet, keeps a light step (video)