OS0406 測地線-面内ひずみ法に基づく鞍形成形に及ぼす加熱方向の影響(OS4-2 実験・計測技術,OS-4 溶接変形・残留応力の計測技術,シミュレーション技術)

概要

論文の詳細を見る
When we conduct laser forming to create suitable results, it is one of important problems where and how much we should put in-plane strain into a thin plate. Some researchers have presented a new development method with curvature lines. Curvature line can be obtained as a result of combining primary curvature directions. In-plane strain is calculated from distance change of these lines. Heating direction is chosen parallel to curvature line because in-plane strain is put as transverse shrinkage caused by heating. In this case, heating direction is fixed on the plate, not changeable, even if side lines of a product is changed, because curvature line direction is unique to the curved surface. Geodesic in-plane method we have proposed can show in-plane strain for every direction, so that we can select heating direction as you want to do. In this report, we study experimentally the effects of heating direction on laser forming of saddle curved surface for a situation where we chose heating direction freely based on the geodesic in-plane method. As a result, we learn following three points, saddle surface can be created along another heating direction of curvature line, bend effect exists because of transverse shrinkage, and symmetrical heating lines can avoid curved surface shift.
一般社団法人日本機械学会の論文
2011-07-16