Solfronk Pavel, Sobotka Jiří, Bukovská Šárka, Bradáč Josef
Department of Engineering Technology, Faculty of Mechanical Engineering, Technical University of Liberec, Studentská 1402/2, 46117 Liberec, Czech Republic.
Materials (Basel). 2023 Mar 10;16(6):2256. doi: 10.3390/ma16062256.
Concerning the increasingly widespread utilization of the finite element method (FEM), the concept of the so-called virtual factory is also gaining ground, and not only in the engineering industry. This approach does not use numerical simulations of individual production technologies separately but treats the entire production process as a chain of interrelated technologies. Thus, the output data from one technology is taken as input data for the following technology. The resulting thermal and mechanical effects are then not only dealt with within one technology but always comprehensively within the production process. In the consideration of the loading and subsequent service lives of manufactured components, values of residual stresses are one of the very important characteristics. For these reasons, this paper deals with the effect of residual stresses' magnitude and distribution during the formation and the final springback of the seamed pipe end section with and without respect to the influence of the preceding welding. The resulting residual stress values from numerical simulations are subsequently compared with the actual values of residual stresses experimentally measured using X-ray diffraction.
随着有限元方法（FEM）的应用日益广泛，所谓虚拟工厂的概念也在逐渐流行，而且不仅在工程行业。这种方法并非分别对各个生产技术进行数值模拟，而是将整个生产过程视为一系列相互关联的技术链。因此，一种技术的输出数据被用作后续技术的输入数据。这样一来，由此产生的热效应和机械效应不仅在一种技术内部得到处理，而且在整个生产过程中始终得到全面处理。在考虑制造部件的载荷及后续使用寿命时，残余应力值是非常重要的特性之一。基于这些原因，本文探讨了在有或无先前焊接影响的情况下，残余应力的大小和分布在接缝管端段成型及最终回弹过程中的作用。随后，将数值模拟得到的残余应力值与使用X射线衍射实验测量得到的残余应力实际值进行比较。
