The computer aided engineering is aiming at the numerical simulation-the important link in the advanced digital manufacturing.Its second development based on Ansys platform can be carried out often.In common,the Visua...The computer aided engineering is aiming at the numerical simulation-the important link in the advanced digital manufacturing.Its second development based on Ansys platform can be carried out often.In common,the Visual Basic and APDL are important development tools and are applied in the product design at the same time.In the paper,the secondary development flow and method based on Ansys is described.The parameter design and analysis process of the bridge girder erecting equipment is carried on with Ansys software and its secondary development tools—APDL and Visual Basics,including the interact between the mode of Ansys batch solving and Visual Basic.The method speeds up design and enhances the product the quality and the perfor- mance.展开更多
Beijing / China August 2-6, 2010 Organized by The Chinese Society of Rare Earths (CSRE) Co-Organized by Peking University (PKU), Roskill Information Services Ltd., Metallurgical
裂纹的扩展是典型的材料不连续问题,传统的有限元方法难以实现裂纹扩展过程的仿真模拟。为了解决传统有限元在模拟裂纹扩展的不足,XFEM方法(extended Finite Element Method,XFEM)引入水平集函数描述裂纹形态,实现了裂纹在单元内部的扩...裂纹的扩展是典型的材料不连续问题,传统的有限元方法难以实现裂纹扩展过程的仿真模拟。为了解决传统有限元在模拟裂纹扩展的不足,XFEM方法(extended Finite Element Method,XFEM)引入水平集函数描述裂纹形态,实现了裂纹在单元内部的扩展,克服了传统方法只能依赖单元生死来模拟裂纹扩展的难题。以Abaqus为平台,应用Python脚本语言开发了一套裂纹自动扩展程序包,利用Abaqus固有的方法编写程序,通过扩展有限元功能实现裂纹的自动扩展,通过模拟I型边裂纹和三点弯梁的裂纹的扩展过程,验证了XFEM方法的有效性。同时,模拟了多裂纹的扩展过程。结果表明:方法不仅能够利用Abaqus软件的实现复杂的加载和边界模拟,同时又能体现XFEM在裂纹扩展模拟上的优势,为解决实际复杂问题提供了途径。展开更多
文摘The computer aided engineering is aiming at the numerical simulation-the important link in the advanced digital manufacturing.Its second development based on Ansys platform can be carried out often.In common,the Visual Basic and APDL are important development tools and are applied in the product design at the same time.In the paper,the secondary development flow and method based on Ansys is described.The parameter design and analysis process of the bridge girder erecting equipment is carried on with Ansys software and its secondary development tools—APDL and Visual Basics,including the interact between the mode of Ansys batch solving and Visual Basic.The method speeds up design and enhances the product the quality and the perfor- mance.
文摘Beijing / China August 2-6, 2010 Organized by The Chinese Society of Rare Earths (CSRE) Co-Organized by Peking University (PKU), Roskill Information Services Ltd., Metallurgical
文摘裂纹的扩展是典型的材料不连续问题,传统的有限元方法难以实现裂纹扩展过程的仿真模拟。为了解决传统有限元在模拟裂纹扩展的不足,XFEM方法(extended Finite Element Method,XFEM)引入水平集函数描述裂纹形态,实现了裂纹在单元内部的扩展,克服了传统方法只能依赖单元生死来模拟裂纹扩展的难题。以Abaqus为平台,应用Python脚本语言开发了一套裂纹自动扩展程序包,利用Abaqus固有的方法编写程序,通过扩展有限元功能实现裂纹的自动扩展,通过模拟I型边裂纹和三点弯梁的裂纹的扩展过程,验证了XFEM方法的有效性。同时,模拟了多裂纹的扩展过程。结果表明:方法不仅能够利用Abaqus软件的实现复杂的加载和边界模拟,同时又能体现XFEM在裂纹扩展模拟上的优势,为解决实际复杂问题提供了途径。