The draping behavior of fabric is simulated by using four node quadrilateral thin plate elements with finite rotation. The finite element formulation is based on the total Lagrangian approach. An exact representatio...The draping behavior of fabric is simulated by using four node quadrilateral thin plate elements with finite rotation. The finite element formulation is based on the total Lagrangian approach. An exact representation of finite rotation is introduced. The strain energy function accounting for the material symmetry is obtained by the tensor representation theory. To avoid shear locking, the assumed strain technique for transverse shear is adopted. The conjugate gradient method with a proposed line search algorithm is employed to minimize energy and reach the final shape of fabric. The draping behavior of a rectangular piece of fabric over a rectangular table is simulated. (Author abstract) 9 Refs.展开更多
The enhancement of interface bonding between cement and polymerand the structural reticula-tion of the water-soluble polymer areproposed to minimize the shortening of the mechanical properties ofmacro-de-fect-free(MDF...The enhancement of interface bonding between cement and polymerand the structural reticula-tion of the water-soluble polymer areproposed to minimize the shortening of the mechanical properties ofmacro-de-fect-free(MDF)cement based composites at high relativehumidity.The MDF composites incorporated with vari-ouscross-coupling agents studied experimentally.The results show thatthe MDF composites modified with small amounts of cross-couplingagent had raised mechanical properties,but it is more important thatthe modified MDF composites had a significant increase in waterresistance compared to the original one.展开更多
文摘The draping behavior of fabric is simulated by using four node quadrilateral thin plate elements with finite rotation. The finite element formulation is based on the total Lagrangian approach. An exact representation of finite rotation is introduced. The strain energy function accounting for the material symmetry is obtained by the tensor representation theory. To avoid shear locking, the assumed strain technique for transverse shear is adopted. The conjugate gradient method with a proposed line search algorithm is employed to minimize energy and reach the final shape of fabric. The draping behavior of a rectangular piece of fabric over a rectangular table is simulated. (Author abstract) 9 Refs.
文摘The enhancement of interface bonding between cement and polymerand the structural reticula-tion of the water-soluble polymer areproposed to minimize the shortening of the mechanical properties ofmacro-de-fect-free(MDF)cement based composites at high relativehumidity.The MDF composites incorporated with vari-ouscross-coupling agents studied experimentally.The results show thatthe MDF composites modified with small amounts of cross-couplingagent had raised mechanical properties,but it is more important thatthe modified MDF composites had a significant increase in waterresistance compared to the original one.
