考虑焊接残余应力的船体板结构屈曲强度  

On Buckling Strength of Hull Plates in the Presence of Welding Residual Stress

作　　者：刘伯运[1] 周晓松[1] 张岳林[2] 

机构地区：[1]海军工程大学动力工程学院 [2]91404部队

出　　处：《船海工程》2017年第6期6-11,共6页Ship & Ocean Engineering

基　　金：国家自然科学基金(51479205)

摘　　要：传统的船体板结构屈曲计算模型一般为完整板格模型,但在实际中焊接残余应力的影响是不可避免的。针对这一问题,基于有限元热-力顺序耦合方法,计算加筋板在单轴压缩载荷下的屈曲特征值,结果表明纵筋间距越大,焊接残余应力对加筋板稳定性的影响越大;纵筋长细比越大,焊接残余应力对加筋板稳定性的影响越小。与Recking No.23模型试验对比,验证了热-力顺序耦合方法的有效性和应用价值。To calculate the stability of hull plate structures in the presence of welding residual stress, the buckling mecha- nism of stiffened panels under uniaxial compressive load was researched by using FE thermal-force sequential coupling method. The results showed that the influence of welding residual stress upon stability of stiffened panels increases with the incretion of longitudinal spacing and decreases with longitudinal slenderness. Compared with experimental results of Recking No. 23 model, the validity and application value of the FE sequential coupling method was verified.

关 键 词：焊接残余应力 加筋板 屈曲强度 热-力顺序耦合 单轴压缩 

分 类 号：U661.43[交通运输工程—船舶及航道工程]