精密成形工程
精密成形工程
정밀성형공정
METAL FORMING TECHNOLOGY
2012年
3期
47-50
,共4页
变径管%内高压成形%加载路径%数值模拟
變徑管%內高壓成形%加載路徑%數值模擬
변경관%내고압성형%가재로경%수치모의
tube with variable cross sections%hydroforming%loading path%numerical simulation
基于Dynaform有限元模拟软件,在获得合适总轴向进给量以及最大内压力的基础上,重点探讨了轴向进给路径以及内压力加载路径对变径管内高压成形的影响。结果表明：按照前段进给速度大于后段进给速度的双线性轴向进给方式进给能得到一条最优的轴向进给路径;梯形内压加载方式的成形结果要明显优于线性内压加载方式,且当内压区间为40～60MPa时,梯形内压加载方式的成形结果达到最优化。
基于Dynaform有限元模擬軟件,在穫得閤適總軸嚮進給量以及最大內壓力的基礎上,重點探討瞭軸嚮進給路徑以及內壓力加載路徑對變徑管內高壓成形的影響。結果錶明：按照前段進給速度大于後段進給速度的雙線性軸嚮進給方式進給能得到一條最優的軸嚮進給路徑;梯形內壓加載方式的成形結果要明顯優于線性內壓加載方式,且噹內壓區間為40～60MPa時,梯形內壓加載方式的成形結果達到最優化。
기우Dynaform유한원모의연건,재획득합괄총축향진급량이급최대내압력적기출상,중점탐토료축향진급로경이급내압력가재로경대변경관내고압성형적영향。결과표명：안조전단진급속도대우후단진급속도적쌍선성축향진급방식진급능득도일조최우적축향진급로경;제형내압가재방식적성형결과요명현우우선성내압가재방식,차당내압구간위40～60MPa시,제형내압가재방식적성형결과체도최우화。
By using Dynaform software,the impact of loading paths of axial feeding and internal pressure on hydroforming of tubes with variable cross sections is discussed based on the appropriate amount of the total axial feed and the maximum internal pressure.Results indicate that the double linear loading pattern in which the feeding speed in anterior stage is larger than that in the posterior is the best loading path,and the step-loading pattern excels the linear loading pattern a lot,and the step-loading pattern reaches its optimization when the feeding pressure falls into 40~60 MPa.
