期刊文献+

铝型材非稳态挤压有限体积法模拟关键技术研究与应用 被引量:2

Aluminium Alloy Profile Transient Extrusion Simulation Using Finite Volume Method
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摘要 采用Euler网格和有限体积法(FVM),建立了铝型材非稳态挤压过程的数值模拟模型,研究了相应的关键技术。利用SIMPLE算法迭代计算得到速度场和压力场,继而计算获得等效应变速率、温度等物理场量;根据上述场量,结合铝型材热挤压的本构方程,进行动力粘度的迭代与刷新;利用VOF(volumeoffluid)方法追踪材料的流动前沿;利用“移动网格技术”解决挤压杆移动所造成的边界移动问题;利用时间步长的自动调整保证模拟的稳定性和高效性。开发了铝型材非稳态挤压有限体积法数值模拟程序,并对典型铝型材挤压过程进行了模拟,验证了所建立的铝型材非稳态挤压过程有限体积法模型及其关键技术的可行性。 Numerical simulation model for unsteady aluminum profile extrusion processes is built using Euler mesh and finite volume method (FVM), and the related key technologies are studied. Velocity and pressure fields are obtained iteratively by SIMPLE algorithm. Temperature and equivalent strain rate fields calculated according to velocity field are used to update the dynamic viscosity coefficient associated with the constitutive equations for hot extrusion of aluminum profile. VOF (volume of fluid) method is incl...
机构地区 山东大学
出处 《中国机械工程》 EI CAS CSCD 北大核心 2006年第S1期96-99,共4页 China Mechanical Engineering
基金 国家自然科学基金资助项目(50375087 50425517)
关键词 Euler网格 有限体积方法(FVM) SIMPLE算法 VOF方法 Euler mesh finite volume method(FVM) SIMPLE algorithm VOF method
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同被引文献34

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