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zoe122208木虫 (正式写手)
superboy
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[求助]
求助
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| 当两种金属材料发生碰撞时，首先在两种材料内部沿着管件径向产生方向相反的反射波。在随后内、外管的反射波分别在内管内壁和外管外壁发生反射，由于内外管的壁厚不同，因此反射波的振荡周期也不相同。在内管中的冲击波与碰撞时产生的冲击波在碰撞点迭加形成压力峰值。在碰撞点处的碰撞速度明显高于碰撞点之后的金属流动速度，因此在碰撞处形成波峰。由于在管中传播的时间不同,导致波峰向焊接方向一侧偏转。 |
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befair
铁杆木虫 (正式写手)
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【答案】应助回帖
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zoe122208: 金币+50, 翻译EPI+1, ★★★★★最佳答案, 感谢帮助 2013-12-20 13:26:18
zoe122208: 金币+50, 翻译EPI+1, ★★★★★最佳答案, 感谢帮助 2013-12-20 13:26:18
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When two pieces of metals collide, at first reflective radial waves are resulted in the two materials in the opposite direction. Subsequently the reflective waves in the inner and outer pipe are reflected at the inner surface of the inner pipe and outer surface of the outer pipe, respectively. Due to the different wall thicknesses in the inner and outer pipe, the oscillation periods of the reflective waves are different, too. The shock wave in the inner pipe and the shock wave caused by collision are superposed at the collision point to form a pressure peak. The collision speed is clearly higher than the metal movement speed at this collision point than any point beyond and hence a wave crest is formed at the collision point. As the propagation times in the pipes are different, the wave crest is deflected towards the welding direction. 供参考, 不妥见谅 |
4楼2013-12-19 20:07:08
2楼2013-12-19 16:27:19
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真强必胜: 金币+1, ok 2013-12-19 22:36:50
真强必胜: 金币+1, ok 2013-12-19 22:36:50
| When the collision of two kinds of metallic materials happened, firstly, reflected waves along opposite radial directions of inside of the two kinds of pipe metallic materials. Subsequently, reflected waves of the inner pipe will reflect inside the inner wall of the pipe, and reflected waves of the outer pipe will reflect inside the wall of the outer pipe. As the different wall thickness of the inner and outer pipe, the periods of oscillation of the back waves are different. Pressure peak was formed at the collision point by overlap of shock waves of inner pipes. The collision speed at the collision point is higher than the speed of metal flow after the collision point, so the wave peak was formed at the collision point. As the spread of time are different, the wave peak deflect to the direction of welding. |
3楼2013-12-19 17:09:30