RT Journal T1 Mathematical model and simulation of pipe-annulus welding assemble surface and opening A1 WANG Qiang, XU Lei, PENG Shaofeng PB Journal of Shandong University(Engineering Science) FD 2015-12-20 YR 2015 JF Journal of Shandong University(Engineering Science) JO Journal of Shandong University(Engineering Science) VO 45 IS 6 SP 71 DO 10.6040/j.issn.1672-3961.0.2015.111 K1 pipe-annulus intersecting;parametric equation;Newton iteration;actual cutting angle;blunt edge LK {http://gxbwk.njournal.sdu.edu.cn/EN/article/article_1381.shtml}