Treatment of discontinuous interface in liquid-solid forming with extended inite element method
Extended finite element method (XFEM) is proposed to simulate the discontinuous interface in the liquidsolid forming process. The discontinuous interface is an important phenomenon happening in the liquid-solid forming processes and it is difficult to be simulated accurately with conventional finite element method (CFEM) because it involves solid phase and liquid phase simultaneously. XFEM is becoming more and more popular with the need of solving the discontinuous problem happening in engineering field. The implementation method of XFEM is proposed on Abaqus code by using UEL(user element) with the flowchart. The key is to modify the element stiffness in the proposed method by using UEL on the platform of Abaqus code. In contrast to XFEM used in the simulation of solidification, the geometrical and physical properties of elements were modified at the same time in our method that is beneficial to getting smooth interface transition and precise analysis results. The analysis is simplified significantly with XFEM.
extended finite element method solid metal with liquid phase numerical simulation
ZHOU Ji-ming QI Le-hua
School of Mechatronic Engineering, Northwestern Polytechnical University, Xi’an, 710072, China Key Laboratory of Contemporary Design and Integrated Manufacturing Technology, Northwestern Polytechnical University, Ministry of Education, Xi’an 710072, Chi
国际会议
北京
英文
911-915
2010-09-16（万方平台首次上网日期，不代表论文的发表时间）