冶金设备
冶金設備
야금설비
METALLURGICAL EQUIPMENT
2014年
2期
7-10
,共4页
薄壁管材%连续矫直%截面扁化%LS-DYNA软件
薄壁管材%連續矯直%截麵扁化%LS-DYNA軟件
박벽관재%련속교직%절면편화%LS-DYNA연건
Thin-walled tube%Continuous straightening%Ovalization of the tube cross-section%LS-DYNA
薄壁管材在连续矫直过程中会在大弯曲变形阶段发生截面扁化（即Bazier效应），截面最大扁化量和残留扁化量作为重要工艺参数，用以控制截面变形程度和管材的圆度。而目前现场仍沿用经验图表结合人工经验和反复试矫对其进行估定，为此运用ANSYS/LS-DYNA对薄壁管材弯曲扁化的过程进行动态仿真，得到了最大扁化量和残留扁化量数据，并通过现场实验证明了分析结果的正确性和可信性，为现场矫直过程相关工艺参数的合理设置提供有效手段。
薄壁管材在連續矯直過程中會在大彎麯變形階段髮生截麵扁化（即Bazier效應），截麵最大扁化量和殘留扁化量作為重要工藝參數，用以控製截麵變形程度和管材的圓度。而目前現場仍沿用經驗圖錶結閤人工經驗和反複試矯對其進行估定，為此運用ANSYS/LS-DYNA對薄壁管材彎麯扁化的過程進行動態倣真，得到瞭最大扁化量和殘留扁化量數據，併通過現場實驗證明瞭分析結果的正確性和可信性，為現場矯直過程相關工藝參數的閤理設置提供有效手段。
박벽관재재련속교직과정중회재대만곡변형계단발생절면편화（즉Bazier효응），절면최대편화량화잔류편화량작위중요공예삼수，용이공제절면변형정도화관재적원도。이목전현장잉연용경험도표결합인공경험화반복시교대기진행고정，위차운용ANSYS/LS-DYNA대박벽관재만곡편화적과정진행동태방진，득도료최대편화량화잔류편화량수거，병통과현장실험증명료분석결과적정학성화가신성，위현장교직과정상관공예삼수적합리설치제공유효수단。
It is well known that bending of the thin-walled tubes when continuous straightening induces ovalization to the tube cross-section ( that is called the Brazier effect ) , the maximal cross-sectional deformation and residual cross-sectional deformation as the main straightening technical parameter , is used to control the deformation degree under buckling limit and also the circular degree of the tubes , however , it is usually carried out based on the experiential data and chart by skilled labourers , whose art is based on long experience and experiments , so have done some dynamic simulations of bending the thin-walled tubes by ANSYS/LS-DYNA, in order to derive the maximal cross-sectional deformation and residual cross-sectional deformation , and then the analysis result is proved to be valid and receivable by the local experiment .This paper can provide the way for optimizing straightening technical parame -ters of thin-walled tube straightening .
