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以有限元数值模拟技术为平台,对某S形梁的成熟工艺进行分析优化,同时对比错位激光拼焊技术,验证错位激光拼焊技术在提升S形梁材料利用率、降低成形性风险以及减少工序上的有效性。通过CAE模拟及实物验证得知,采用错位激光拼焊技术后,工序由7序减少至6序,材料利用率由49.4%提升至55.8%,单台车焊缝长度由998 mm缩减至740 mm。此外,采用错位拼焊后,焊缝处可以增加2个挡料销,焊缝偏移量由30 mm减少至10 mm以内。批量生产验证无问题,可产生良好的经济效益。
Based on the finite element numerical simulation technology, the maturity technology of a S-shaped beam was analyzed and optimized. Compared with the dislocation laser welding technology, the mismatch laser welding technology was used to enhance the utilization of S-beam material, reduce the risk of formability and reduce Process effectiveness. By CAE simulation and physical verification, it was found that the use of dislocation laser welding technology, the process from 7 to 6 order reduction, material utilization increased from 49.4% to 55.8%, a single car weld length reduced from 998 mm to 740 mm . In addition, the use of dislocation welding, the weld can be increased at the two stopper pin, weld offset from 30 mm to less than 10 mm. Mass production verification no problem, can produce good economic benefits.