Title: A new methodology for the optimization of bolt tightening sequences for ring type joints Show Chinese title

Title: 一种用于环形接头螺栓紧固顺序优化的新方法

Abstract: Achieving uniform bolt load distribution is critical to obtain leak-free service in pressure vessel gasketed joints used in offshore pipelines. This is a difficult task due to bolt load variations during the assembly process. In this sense, the Elastic Interaction Coefficients Method has been developed in previous works to define tightening sequences that provide the target load at the end of the sequence in one or two passes. The method is very costly because a complete sequence must be simulated and the load of every bolt must be measured after each tightening operation. The present work validates this method for Ring Type Joints and further develops a numerically and experimentally validated new methodology that provides highly satisfactory results with a significantly lower cost. Show Chinese abstract

Abstract: 实现均匀的螺栓载荷分布对于在海洋管道中使用的压力容器垫片接头获得无泄漏服务至关重要。 这是由于在组装过程中螺栓载荷会发生变化，因此这是一个困难的任务。 在这方面，弹性相互作用系数法已在以前的研究中开发出来，以确定紧固顺序，使序列结束时达到目标载荷，可在一次或两次操作中完成。 该方法非常昂贵，因为必须模拟完整的顺序，并且每次紧固操作后都必须测量每个螺栓的载荷。 本研究验证了该方法在环形接头中的适用性，并进一步开发了一种经过数值和实验验证的新方法，该方法以显著更低的成本提供了非常满意的结果。