塑性工程学报
塑性工程學報
소성공정학보
JOURNAL OF PLASTICITY ENGINEERING
2015年
2期
37-44
,共8页
渐进成形%锥形件%成形路径%参数化%数值模拟
漸進成形%錐形件%成形路徑%參數化%數值模擬
점진성형%추형건%성형로경%삼수화%수치모의
incremental forming%conical parts%forming path%parameterization%numerical simulation
对于渐进成形工艺成形锥形件，当成形角度大于极限成形角时，需采用多道次成形。多道次成形路径设计相对复杂，通过参数化路径可有效简化成形路径设计过程。文章基于ANSYS／LS‐DYNA平台建立了金属板料外轮廓支撑渐进成形的有限元模型，以壁厚均匀为目标，通过数值模拟对一定口径和深度的75°锥形件进行路径设计和优化，得到了75°锥形件渐进成形的参数化路径方程，并对其进行实验验证。验证结果表明，该参数化路径在一定范围内可行。
對于漸進成形工藝成形錐形件，噹成形角度大于極限成形角時，需採用多道次成形。多道次成形路徑設計相對複雜，通過參數化路徑可有效簡化成形路徑設計過程。文章基于ANSYS／LS‐DYNA平檯建立瞭金屬闆料外輪廓支撐漸進成形的有限元模型，以壁厚均勻為目標，通過數值模擬對一定口徑和深度的75°錐形件進行路徑設計和優化，得到瞭75°錐形件漸進成形的參數化路徑方程，併對其進行實驗驗證。驗證結果錶明，該參數化路徑在一定範圍內可行。
대우점진성형공예성형추형건，당성형각도대우겁한성형각시，수채용다도차성형。다도차성형로경설계상대복잡，통과삼수화로경가유효간화성형로경설계과정。문장기우ANSYS／LS‐DYNA평태건립료금속판료외륜곽지탱점진성형적유한원모형，이벽후균균위목표，통과수치모의대일정구경화심도적75°추형건진행로경설계화우화，득도료75°추형건점진성형적삼수화로경방정，병대기진행실험험증。험증결과표명，해삼수화로경재일정범위내가행。
For the conical parts formed by incremental forming process ,the multi‐stage forming process should be used when the forming angle is greater than limit forming angle .It is relatively complex to design the multi‐stage forming paths .Parametric path can effectively simplify the design process of forming path .The finite element model of incremental forming process with the con‐tour supporting was built based on software ANSYS/LS‐DYNA .With uniform wall thickness as the goal ,the paths of 75° conical parts with certain diameter and depth were designed and optimized through the numerical simulation .According to the forming paths of 75° conical parts with different diameters and depths ,the parametric equation of 75° conical parts was gained .And the e‐quation was verified by the experiments and the numerical simulations in a certain range .The results show that the parametric e‐quation can be used in a certain range .
