24小时热门版块排行榜    

Znn3bq.jpeg
查看: 670  |  回复: 3
本帖产生 1 个 翻译EPI ,点击这里进行查看
当前只显示满足指定条件的回帖,点击这里查看本话题的所有回帖

zoe122208

木虫 (正式写手)

superboy

[求助] 求助

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。

» 猜你喜欢

已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖

befair

铁杆木虫 (正式写手)

【答案】应助回帖

★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★
zoe122208: 金币+50, 翻译EPI+1, ★★★★★最佳答案, 感谢帮助 2013-12-20 13:26:18
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
Befairorbeaware
4楼2013-12-19 20:07:08
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖
查看全部 4 个回答

408165840

新虫 (正式写手)

【答案】应助回帖

没看到问题啊楼主 这叙述了这么长

[ 发自小木虫客户端 ]
认认真真做人踏踏实实做事
2楼2013-12-19 16:27:19
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖

汉卿北望

金虫 (著名写手)

【答案】应助回帖


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.
无论如何,做事要有始有终!就算洗马桶也要比别人洗的干净!
3楼2013-12-19 17:09:30
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖
最具人气热帖推荐 [查看全部] 作者 回/看 最后发表
[考研] 求调剂 +3 雪逢冬 2026-04-10 3/150 2026-04-10 08:49 by swb0218
[考研] 中科院总分315求调剂 +3 lallalh 2026-04-09 3/150 2026-04-10 00:51 by haironglove
[考研] 278求调剂 +27 范婷娜 2026-04-07 31/1550 2026-04-09 20:49 by zhouxiaoyu
[考研] 291求调剂 +7 关忆北. 2026-04-09 8/400 2026-04-09 15:17 by 探123
[考研] 招收有机化学、化工,药学,食品灯专业学生 +3 yrfhjgdj 2026-04-08 3/150 2026-04-09 10:15 by QYQX_123
[考研] 求调剂 +3 猪肉墩粉条cc 2026-04-08 4/200 2026-04-09 10:05 by 猪肉墩粉条cc
[考研] 0702物理学学硕299求调剂 +5 祁柒连 2026-04-06 5/250 2026-04-09 09:27 by wj165256
[考研] 土木水利专硕276分求调剂 +6 我想上学!!6 2026-04-05 9/450 2026-04-08 17:45 by 宋小宝HQ
[考研] 281求调剂 +10 椰子蘑菇 2026-04-06 10/500 2026-04-08 11:43 by zzucheup
[考研] 259求调剂 +5 就爱吃土豆呀呀 2026-04-07 5/250 2026-04-07 22:40 by JourneyLucky
[考研] 081200-11408-367学硕求调剂 +4 1_2_3111 2026-04-06 4/200 2026-04-07 08:13 by jp9609
[考研] 工科 22408 267求推荐 +4 wanwan00 2026-04-05 5/250 2026-04-06 22:47 by chenzhimin
[考研] 材料与化工363求推荐 +11 zh096 2026-04-04 11/550 2026-04-06 19:14 by guanxin1001
[考研] 0817化学工程与技术求调剂,一志愿中海洋319 +14 lv945 2026-04-04 14/700 2026-04-06 10:20 by 蓝云思雨
[考研] 求调剂到0856材料工程 +3 程9915 2026-04-05 3/150 2026-04-05 18:15 by 蓝云思雨
[考研] 288求调剂 一志愿哈工大 材料与化工 +13 洛神哥哥 2026-04-03 13/650 2026-04-05 17:27 by zzx2138
[考研] 284求调剂 +7 徐同学_001 2026-04-04 13/650 2026-04-05 17:19 by yulian1987
[考研] 一志愿北交大材料工程总分358求调剂 +6 cs0106 2026-04-05 6/300 2026-04-05 16:34 by imissbao
[考研] 材料化工306分找合适调剂 +14 沧海轻舟e 2026-04-04 14/700 2026-04-05 09:53 by 朱云虎202
[考研] 400分求调剂 +3 尴尬且挠头 2026-04-04 3/150 2026-04-04 08:41 by jp9609
信息提示
请填处理意见