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。

A two-step damage identification method of cracked beams is proposed based on the kinetic energy density and the bending spring model.

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尽管需要花力气去弯曲关节或拉伸肌肉，但人体可以利用弹簧般的肌腱和分布优雅的肌肉来回收相当部分的能量。

Although effort is required to bend a joint or flex a muscle, the body is able to recycle much of the energy expended through spring-like tendons and elegantly arranged muscles.

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在弯曲测试实验中，通过标定测试用AFM微悬臂梁的有效长度，从而修正了其弹簧常数。

In bending test, the spring constant of AFM micro cantilever is corrected through the calibration of its effective length.

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The force may taper off, the force may not be given by a straight line, but for modest deformations, every spring will have a linear regime in which the force is linearly proportional to the stretching.

它产生的力可能会渐渐消失,力的曲线可能不是一条直线,而有轻微的弯曲,每个弹簧都有一个线性区间,在这一区间内,力和伸长量是线性关系

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