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Prediction of wrinkling characteristics is strongly correlated with the strain perpendicular to wrinkling direc- tion. In this paper, the strain field of wrinkled membrane is tested by VIC-3D system based on the digital image correlation technique. Experimental results are validated by the tension wrinkling simulation. The experimental strain perpendicular to wrinkling direction is analyzed in depth. The wrinkling strain of a square wrinkled membrane under corner tension is extracted from experimental strain perpendicular to wrinkling direction. A quantitative characterization format of the experimental wrinkling strain is proposed. A modified prediction method of wrinkling amplitude is presented based on the experimental wrinkling strain. The re- sults show that the precision of modified prediction model has improved 13.2% compared with the classical prediction model. The results reveal that the modified model can give an accurate prediction of the wrinkling amplitude. 相似文献
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摄影家的眼睛总爱追逐秀丽的山川、奔腾的河流、奇妙的动植物或人类社会中的感人瞬间、隐秘角落……的确,这些都能打动人的心灵。然而,如果你看到张士功先生的“另类”摄影,你一定会惊奇地发现,就在我们身边最不起眼的地方,竟然还有一个同样或震撼人心或充满情趣的光影世界。其实,那不过是一些被我们遗忘或忽略的东西——毫不起眼的树丛、锈... 相似文献
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推广的Sullivan浸润相变模型(Ⅲ)——奇异角落 总被引:1,自引:0,他引:1
丁鄂江 《北京师范大学学报(自然科学版)》1987,(4)
本文用改进的动力学方法,借助于Pade近似式,讨论了推广的Sullivan模型参数空间中的奇异角落λ→0,β→0.得到的结果表明三重临界线在这个角落为β/λ→4.462 94…. 相似文献