分别定义综合伸长率和焊缝移动量来量化拼焊板单向拉伸行为.在不同焊缝初始位置条件下,分别建立了焊缝位置对综合伸长率和焊缝移动量影响的解析模型.为验证解析模型的正确性,采用有限元和实验法获得了焊缝位置对综合伸长率和焊缝移动的影响规律.结果表明,解析模型预测结果与实验、有限元结果相一致,综合伸长率和焊缝移动量都随着焊缝位置向拼焊板强侧移动而线性地增大,增大的速率取决于拼焊板的母材材料参数和厚度.解析模型揭示出综合伸长率和焊缝移动量影响因素及焊缝初始位置对拼焊板单向拉伸行为的影响规律.
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