Couple of DOF technique in FEM and the algorithm for equation group solution in the whole stiffness matrix is studied in this paper.A new procedure is developed for the analysis of telescope beam structure.This method...Couple of DOF technique in FEM and the algorithm for equation group solution in the whole stiffness matrix is studied in this paper.A new procedure is developed for the analysis of telescope beam structure.This method can solve most of the complex structural problems in engineering practice.This method has been used in the FEM analysis of pile frame of multifunction drilling machine,which is designed and manufactured by our research group.The right analysis result can improves the design efficiency and the reliability of the structure and reduce the design cost.展开更多
To improve the treatment efficiency of essential boundary condition in mesh-less methods,a simple and robust method is proposed in this paper.Rising weight of nodes in the construction of trail function,specified for ...To improve the treatment efficiency of essential boundary condition in mesh-less methods,a simple and robust method is proposed in this paper.Rising weight of nodes in the construction of trail function,specified for essential boundary condition,can make the trail function pass through these nodes.And then,the trail function can satisfy the essential boundary condition previously by setting diagonal element to 1 or multiplying diagonal element by a big number in FEM.The MLS method is adopted to validate this method,and it is proved that this method is costless and robust in most of mesh-less methods.展开更多
文摘Couple of DOF technique in FEM and the algorithm for equation group solution in the whole stiffness matrix is studied in this paper.A new procedure is developed for the analysis of telescope beam structure.This method can solve most of the complex structural problems in engineering practice.This method has been used in the FEM analysis of pile frame of multifunction drilling machine,which is designed and manufactured by our research group.The right analysis result can improves the design efficiency and the reliability of the structure and reduce the design cost.
文摘To improve the treatment efficiency of essential boundary condition in mesh-less methods,a simple and robust method is proposed in this paper.Rising weight of nodes in the construction of trail function,specified for essential boundary condition,can make the trail function pass through these nodes.And then,the trail function can satisfy the essential boundary condition previously by setting diagonal element to 1 or multiplying diagonal element by a big number in FEM.The MLS method is adopted to validate this method,and it is proved that this method is costless and robust in most of mesh-less methods.
