蜗壳是水电站中常用的一种异形结构,其设计质量直接影响水电站的发电效率。为提高蜗壳设计效率及解决蜗壳后续加工的难点,综合利用Dynamo for Revit和Advance Steel软件各自的优点,提出了一种适用于水轮机蜗壳的快速设计方法。利用Dynam...蜗壳是水电站中常用的一种异形结构,其设计质量直接影响水电站的发电效率。为提高蜗壳设计效率及解决蜗壳后续加工的难点,综合利用Dynamo for Revit和Advance Steel软件各自的优点,提出了一种适用于水轮机蜗壳的快速设计方法。利用Dynamo的参数化建模功能,结合蜗壳设计公式,实现了蜗壳结构的快速化建模;再选用合理的数据交换格式将模型导入Advance Steel,经过处理后即可生成蜗壳钢结构加工所需要的各类视图及数据驱动文件,可直接用于蜗壳加工。所提出的方法也可推广应用于水利水电工程中类似异形钢结构部件的设计及加工。展开更多
This study developed a sequential coupling finite element procedure to predict residual stresses of steel pipes with longitudinal wela／ circumferential weld and spiral weld.The results show that the residual stress i...This study developed a sequential coupling finite element procedure to predict residual stresses of steel pipes with longitudinal wela／ circumferential weld and spiral weld.The results show that the residual stress in heat affected zone（HAZ）is higher than that in weld for spiral weld pipe.For the circumferential weld pipe and spiral weld pipe,the residual stress in inner surface is higher than that in outer surface.However,for the spiral weld pipe,the residual stress in inner surface is smaller than that in outer surface.The hoop residual stress of circumferential weld pipe is higher than that of longitudinal weld pipe,while the axial residual stress of circumferential weld pipe is smaller than that of longitudinal weld pipe.The hoop stresses for circumferential weld pipe and axial stress for longitudinal weld pipe have exceeded the yield strength of base metal.With the increase of helix angle,the hoop stress decreases while the axial stress increases.For the spiral pipe（α=30° to 50°）,both the hoop stress and axial stress are relatively small.The spiral pipe（helix angle ranging from 30° to 50°） is helpful to reduce stress corrosion cracking（SCC） and it is recommended to manufacture the steel pipe.展开更多
文摘蜗壳是水电站中常用的一种异形结构,其设计质量直接影响水电站的发电效率。为提高蜗壳设计效率及解决蜗壳后续加工的难点,综合利用Dynamo for Revit和Advance Steel软件各自的优点,提出了一种适用于水轮机蜗壳的快速设计方法。利用Dynamo的参数化建模功能,结合蜗壳设计公式,实现了蜗壳结构的快速化建模;再选用合理的数据交换格式将模型导入Advance Steel,经过处理后即可生成蜗壳钢结构加工所需要的各类视图及数据驱动文件,可直接用于蜗壳加工。所提出的方法也可推广应用于水利水电工程中类似异形钢结构部件的设计及加工。
基金supported by the Taishan Scholar Construction Funding(ts201511018)the National Natural Science Foundation of China(11372359)+2 种基金the Natural Science Foundation for Distinguished Young Scholars of Shandong Province(JQ201417)the Fundamental Research Funds for the Central Universities(15Cx08006A)the Innovation Project Foundation for Graduate Student of China University of Petroleum(YCXJ2016029)
文摘This study developed a sequential coupling finite element procedure to predict residual stresses of steel pipes with longitudinal wela／ circumferential weld and spiral weld.The results show that the residual stress in heat affected zone（HAZ）is higher than that in weld for spiral weld pipe.For the circumferential weld pipe and spiral weld pipe,the residual stress in inner surface is higher than that in outer surface.However,for the spiral weld pipe,the residual stress in inner surface is smaller than that in outer surface.The hoop residual stress of circumferential weld pipe is higher than that of longitudinal weld pipe,while the axial residual stress of circumferential weld pipe is smaller than that of longitudinal weld pipe.The hoop stresses for circumferential weld pipe and axial stress for longitudinal weld pipe have exceeded the yield strength of base metal.With the increase of helix angle,the hoop stress decreases while the axial stress increases.For the spiral pipe（α=30° to 50°）,both the hoop stress and axial stress are relatively small.The spiral pipe（helix angle ranging from 30° to 50°） is helpful to reduce stress corrosion cracking（SCC） and it is recommended to manufacture the steel pipe.
