A two-step damage identification method of cracked beams is proposed based on the kinetic energy density and the bending spring model.
基于动能密度和弯曲弹簧模型，提出了裂纹梁损伤识别两步法。
In order to acquire the local bending spring-back accuracy of sheet metal strip of a progressive die design, the thesis aims to build ironing depth simulation model in a bending deformation zone.
为解决级进模具使用的带料上的局部折弯回弹的精度问题，本文建立了折弯变形区的过压量模拟模型。
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