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zoe122208木虫 (正式写手)
superboy
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[求助]
请帮忙两段翻译，谢谢
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实际上电磁焊接两管之间发生碰撞不是绝对的平面与平面碰撞。如果考虑更加细微的情况，或者考虑角度问题，则理论分析较为困难。因此在本文中，我们把磁脉冲焊接内管受力问题转化为圆环受到外界均匀作用力问题。 在本文研究内容中，内管材料20#Fe不允许有大的塑性变形，因此需要有足够强的厚度以保证足够的刚度防止焊接失效，20#Fe的塑性变形行为不在我们的研究范围内。我们将外管3A21的动态力学性能删除了。同时，添加了20#钢在动态载荷下的屈服强度的得出过程。 根据文献可知，在超高冲击载荷下，材料的动态屈服强度和准静态下的屈服强度之比可能在1~100之间，钢在受到几百米速度冲击时动态屈服强度相比准静态屈服强度可以增加4倍左右。基于此，我们首先通过试验来获得某一条件下的临界厚度，之后将临界厚度和冲击压力带入到公式中先计算出钢在这一条件下的动态屈服强度，约为1GPa左右（为准静态条件下的3倍），再将该屈服强度作为计算其他临界厚度时20#钢在其他冲击条件下的依据，最终得出不同放电电压（不同冲击速度）下的临界厚度。 |
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武汉一心一译 
捐助贵宾 (著名写手)
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实际上 电磁焊接 两管之间 发生碰撞 不是绝对 的平面与平面碰撞。如果 考虑更加细微 的情况，或者 考虑 角度问题，则 理论分析 较为困难。因此 在本文中，我们 把磁脉冲焊接 内管 受力问题 转化为 圆环 受到 外界均匀作用力 问题。 在本文研究内容中，内管材料 20#Fe 不允许 有大的 塑性变形，因此 需要有 足够强的厚度 以保证 足够的 刚度 防止焊接失效，20#Fe 的塑性变形行为 不在我们的 研究范围内。我们 将外管 3A21的 动态力学性能 删除了。同时，添加了 20# 钢 在 动态载荷下 的屈服强度 的得出过程。 In a practical case, the inter tube collision during electromagnetic welding process is not an absolutely plane to plane collision. In fact, if taking more subtle conditions or angle issues into consideration, pure theoretical analysis can hardly explain such collision. As a result, in this paper the inner tube stress problem during magnetic pulse welding was converted into the uniform force acting on an annulus. In the research content of this paper, no large plastic deformations were allowed to emerge in inner tube material (20#Fe), therefore we need to secure enough thickness of tube to provide sufficient rigidity in case of wielding failure, 20#Fe plastic deformations were not within our research scope. we deleted the dynamic mechanical property of external tube 3A21, while added the calculation process of yield strength of 20# steel under the condition of dynamic load. |
2楼2015-07-01 10:15:33
青草离离
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zoe122208: 金币+5, ★★★很有帮助 2015-07-01 21:08:49
zoe122208: 金币+5, ★★★很有帮助 2015-07-01 21:08:49
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In fact collision between electromagnetic welding pipe is not absolute plane and plane collision.If you consider a more subtle, or consider Angle problem, theory analysis more difficult.So in this article, we put the magnetic pulse welding tube stress problem into a circle by uniform external forces.In this paper the research content, the inner tube material # 20 Fe is not allowed to have a large plastic deformation, so you need to have a strong enough in order to assure enough stiffness to prevent welding failure, the thickness of plastic deformation behavior of 20 # Fe is beyond the scope of our research.We will pipe outside the dynamic mechanical properties of 3 a21 deleted.At the same time, add the 20 # steel yield strength under dynamic load of process are obtained. According to the literature, under the high impact load, the dynamic yield strength of material and the ratio of yield strength under quasi-static may be between 1 and 100, steel in a hit from a few hundred meters speed dynamic yield strength compared to quasi static yield strength increases about four times.Based on this, we first through the test to get under the condition of a certain critical thickness, then the critical thickness and the shock pressure into the formula to calculate the steel under the condition of the dynamic yield strength, about 1 gpa (standard under the condition of static 3 times), then the yield strength for other critical thickness calculation of 20 # steel under the condition of other impact, finally it is concluded that different discharge voltage under different impact speed) (critical thickness. |
3楼2015-07-01 10:25:30
武汉一心一译
捐助贵宾 (著名写手)
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★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ...
zoe122208: 金币+95, 翻译EPI+1, ★★★★★最佳答案 2015-07-01 21:08:42
zoe122208: 金币+95, 翻译EPI+1, ★★★★★最佳答案 2015-07-01 21:08:42
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根据文献 可知，在超高 冲击载荷下，材料的 动态屈服强度 和 准静态下的 屈服强度 之比 可能在1~100之间，钢在 受到 几百米速度 冲击时 动态屈服强度 相比准静态屈服强度 可以 增加4倍左右。基于此，我们 首先 通过试验 来获得 某一条件下的 临界厚度，之后 将临界厚度 和冲击压力 带入到 公式中 先计算出 钢在这一条件下的 动态屈服强度，约为1GPa左右（为准静态条件下 的3倍），再将该 屈服强度 作为 计算 其他临界厚度时 20#钢 在其他冲击条件下 的依据，最终得出 不同放电电压（不同冲击速度）下的 临界厚度。 According to relevant literatures, we can learn that under ultrahigh impulse load, the ratio between material dynamic yield strength and quasi-static yield strength can be 1~100. Under the shock of several hundred meters speed, the material yield strength can increase by approximately 4 times. On this basis, firstly we made an experiment and obtained a material critical thickness under certain condition; then we put this critical thickness and the shock pressure into equation to calculate the dynamic yield strength under such condition, and the result was about 1GPa ( 3 times bigger than the that under quasi-static condition), based on which, we calculated other critical thicknesses of the 20# steel under various discharge voltages (various impact velocities ). |
4楼2015-07-01 10:45:31