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zoe122208: ½ð±Ò+50, ·­ÒëEPI+1, ¡ï¡ï¡ï¡ï¡ï×î¼Ñ´ð°¸ 2015-07-01 21:04:35
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In this research, the inner tube is made of materials that is insensitive to strain rate ( strain rate independent material), once plastic deformations emerge inside of the tube, it represents the welding failure. Therefore, in the process of deducing the critical thickness, in order to avoid the large deformations emerging inside of the tube, we adopted a quasistatic model to describe and calculate the critical thickness of the magnetic pulse inner tube. In addition, the dynamic effect of magnetic pulse welding was mainly reflected by external tube, in the deducing process, the force P that the external tube act on internal tube was calculated by adopting such parameters as speed, density and sound velocity. Therefore, the acting force P was believed to be convincing, not only for the consideration of dynamic effects by adopting various parameters, but also on for the consideration of dynamic effects according to the material yield strengths. Indeed, it is not fully rigorous to describe and calculate the dynamic issues by a quasistatic model, in our future work, efforts will be paid to the dynamic response of stress wave upon internal and external tubes.
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