起皱的

An analytical model is established for axisymmetric parts in deep drawing.

摘要建立了轴对称件拉深侧壁起皱的数学模型。

Counterfeit money was being produced in the back offices of the corporate parking lot and shipped to the city council in 爱思英语学习网爱思英语-中国最受欢迎的英语学习网站- http://www.24en.com/ corrugate boxes where the mayor would countersign their authenticity.

但迈克·丹纳从没想过真的会有相关的犯罪。公司停车场后面的办公室正在印伪钞，并用起皱的纸箱运往市政委员会，在那里市长要给它们辨明真伪。

Methods for imparting strength or crepe to paper products.

为纸制品提供强度或对其起皱的方法。

The result is that multi-point forming with the elastic medium can limit the happening of dimpling and wrinkling.

结果表明，使用弹性介质可以显著地抑制压痕和起皱的发生。

It is shown that the distribution of their veins were similar; and both wings tend to be much stiffer under upward loading than under downward loading; the area of a forewing is smaller than that of a hind wing from the same dragonfly; and the structural performance of the forewing is superior to that of the hind wing.

对具有不同起拱、起皱高度的计算模型进行静力分析，发现起拱和起皱的幅度越大，结构的刚度也越大，但单位面积上所用的材料则呈非线性增加，相应地增加了结构自重。

These two defects were suppressed when polyurethane elastic cushions and steel paddings were used between the titanium alloy retiary sheet and the press punch with the blankholder device in the forming technology mode, and the 3D curved surface of prosthesis with good quality can be acquired.

模拟结果表明：采用前两种成形工艺得到的钛合金颅骨修复体表面出现压痕或起皱缺陷，采用在基本体和钛合金网板之间放置聚氨酯弹性垫和钢质垫板并使用压边圈这种成形工艺时，可以抑制压痕和起皱的产生，获得良好的成形效果。

In this paper is proposed the recearch of Shear Wrinkling.

本论文在研读文献资料和调查实际中，提出了"剪应力起皱"的研究方向，这一研究对起皱问题的深入探讨和实际问题的解决都将起到一定的推动作用。

Lithe limbs, bright eyes, unwrinkled forehead

娇皮嫩肉，眼神明亮，没有起皱的纹理

The mechanism of instability wrinkling in the process based on minimum energy principle is revealed, uniform mathematic description of the wrinkling wave on the strip of in-plane bending is established, the internal and external energy is deduced by energy method, and a uniform criteria of internal and external wrinkling is established; then how to combine the criteria with the FEM simulation system to make the numerical prediction of wrinkling into reality is also resolved in the paper. The effects of the forming parameters on the deforming result are analyzed by the uniform predict criteria. The results show as follows: as the compress width increase, external wrinkling first come into being, then internal winkling do, and finally in-plane bend occur; the loading wedge angle increase, internal winkling first come into being, thenin-plane bend do, and finally external wrinkling occur; in-plane bend is possible to occur with a increase of the strain-hardening exponent and the strength coefficient; and the effect of the friction factor may be ignored.

2揭示了板带不均匀压下面内弯曲成形过程基于能量原理的失稳起皱机理，提出了统一的描述内外缘起皱波形的函数，采用变分法推导了服从该波形函数的内外缘起皱能，建立了统一的起皱预测准则；将新建立的统一的起皱预测准则引入到数值模拟系统IBS中，数值预测结果与实验结果的吻合较好；分析了成形过程各参数对起皱的影响规律：随着接触变形区宽度的逐渐增大，先是发生外缘起皱，然后发生内缘起皱，进而才出现稳定成形；随着实际加载楔角的增大，先是发生内缘起皱，然后发生稳定成形，进而出现外缘起皱；硬化指数和强化系数增大，易于稳定成形；摩擦因子对起皱的影响不明显；而且接触变形区宽度对起皱的影响最大。

Because of the unique fitting mode of hydraulic drawing, early wrinkles of conical parts (very likely to wrinkle in ordinary deep drawing) fit orderly to punch under the action of counter pressure as the punch moves down ward, thus wrinkle-free parts can be obtained.

由于充液拉深方法独特的贴模方式，使普通拉深方法极易起皱的锥形件成形初期产生的皱随着凸模向下运动在对向液压的作用下顺次贴向凸模，从而可以得到无皱的零件。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。