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首页> 外文会议>ASME(American Society of Mechanical Engineers) Pressure Vessels and Piping Conference vol.3: Design and Analysis; 20050717-21; Denver,CO(US) >INTRODUCTION OF THE ELEMENT INTERACTION TECHNIQUE FOR WELDING ANALYSIS AND SIMULATION
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INTRODUCTION OF THE ELEMENT INTERACTION TECHNIQUE FOR WELDING ANALYSIS AND SIMULATION

机译：焊接分析与模拟中的元素交互技术介绍

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摘要

The residual stresses generated due to welding in pressure components may have several harmful effects such as decrease in the resistance to cycling load and corrosive environments. The analysis of the welding process has been developed extensively in 2D and 3D. The element movement technique has been shown to be very effective in simulating the filler material deposition leading to a reduction in the analysis time. However, when attempted for wider fields of applications, it had some limitations, especially when moving the elements towards the base-plate. In this paper, the element interaction technique is introduced utilizing the concepts of both the element movement and element birth techniques. The new technique is verified versus the currently developed procedures. In this technique, the elements of the weld pool are held in place in contact with the elements of the base-plate and the interaction is made to be a function of time. This gave several flexibilities in modeling the welding process. Hence, the technique is then used to analyze simple fillet welding of a plate and circumferential butt-welding of a pipe.
机译：由于压力组件中的焊接而产生的残余应力可能会产生多种有害影响，例如，降低对循环负载和腐蚀性环境的抵抗力。焊接过程的分析已在2D和3D中得到了广泛的发展。元素移动技术已被证明在模拟填充材料沉积方面非常有效，从而缩短了分析时间。但是，当尝试在更广泛的应用领域中时，它具有一些局限性，尤其是在将元件移向底板时。在本文中，利用元素移动和元素诞生技术的概念介绍了元素交互技术。该新技术已与当前开发的程序进行了验证。在该技术中，将熔池的元素固定在与基板的元素接触的位置，并且将相互作用作为时间的函数。这为焊接过程的建模提供了一些灵活性。因此，该技术随后可用于分析板材的简单角焊和管道的周向对焊。

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