We study welded joints (WJ) of plates 6–8 mm in thickness obtained by the electric-arc and laser methods with various values of the energy of welding Ω. The strains and stresses in the stretched plates with welds are computed numerically by using the ABAQUS program. The characteristics of materials in the modeled WJ are obtained according to the results of testing minispecimens cut out from the appropriate zones. The distributions of strains on the surfaces of the specimens are computed numerically and compared with the distributions obtained with the help of the ARAMIS video system. By analyzing the stresses and strains in the internal layers of welded plates, we determine the zones dangerous from the viewpoint of possible development of damage. It is discovered that the strength of WJ strongly depends on the values of Ω and is close to the strength of the base material for low Ω.

中文翻译：

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焊接能量对S960QC高强钢接头强度的影响

我们研究了通过电弧和激光方法获得的厚度为 6-8 毫米的板的焊接接头 (WJ)，具有不同的焊接能量值 Ω。使用 ABAQUS 程序对带焊缝的拉伸板中的应变和应力进行数值计算。建模 WJ 中材料的特性是根据从适当区域切下的小样本的测试结果获得的。试样表面的应变分布通过数值计算并与在 ARAMIS 视频系统的帮助下获得的分布进行比较。通过分析焊接板内层的应力和应变，我们从损坏可能发展的角度确定危险区域。