非薄壁长管类零件校直量计算建模和仿真验证

Modeling and simulation verification on straightening amount calculation for non-thin-walled long pipe parts

针对目前国内长管类零件校直量严重依赖人工经验且校直精度低、效率低的问题,开展了长管类零件校直量计算模型研究。基于弹塑性变形理论,通过探究校直过程中长管类零件的变形规律,明确校直力与变形挠度的关系,进而推导并建立了校直量计算模型,可通过此模型计算一定初始变形下校直管件所需的校直量。使用Matlab实现了模型的编程计算,并基于ANSYS软件进行了长管类零件校直过程的模拟仿真,验证了模型的计算精度。验证结果表明:模型计算结果与仿真分析结果的相对误差小于10%,精度较高,可作为校直量制定的重要参考。

For the current problem that the straightening amount of long pipe parts in China relied heavily on manual experience and had low straightening accuracy and low efficiency,the calculation model of the straightening amount of long pipe parts was studied.Then,based on the elasto-plastic deformation theory,the relationship between the straightening force and the deformation deflection of long pipe parts was clarified by exploring the deformation law of long pipe parts in the process of straightening,and the calculation model of straight-ening amount was derived and established,which could calculat the required straightening amount of pipe parts under certain initial de-formation.Furthermore,the programming calculation for the model was realized by Matlab,and the simulation of the straightening process of the long pipe parts was carried out based on software ANSYS,which verified the calculation accuracy of the model.The verification re-sults show that the relative error between the model calculation results and the simulation analysis results is less than 10%,and the accu-racy is high,which can be used as an important reference for formulating the straightening amount.