Aiming at improving the limitation of adjustment and interaction by using the traditional geometric modeling methods,this paper addressed the physically-based method and FDM(force density method) for surface modeling.

Three numerical analysis methods frequently used in initial form analysis of cable structure are introduced,which contain force-density method,dynamic relaxation method and nonlinear finite-element method.

The mixed form-finding method is developed on the basis of the force-density method.

In this paper, the force-density method is used to analyze the initial shapes of tension membrane structures, in which the boundary is treated with T-element.

Application for the method of least squares in cable-net s form-finding of force density method;

Based on form-finding of the force density method,load analysis of the nonlinear finite element method and geodesic line cutting method,this paper summarizes some outlines in the design and construction of membrane structures.

The concept of T-element is applied to the force density method.

By adopting the variable density method,the topological optimization model that took the total flexibility of structure as the objective function and the volume of structure as the constraint was established.

Ten density functional theory (DFT) methods were compared for calculating the car- bon-hydrogen bond dissociation energies of hydrocarbons.

The acetyl grouptransfer reaction between arylamine N-acetyltransferases andits substrate,paminobenzoicacid(PABA) wasinvestigated by Density Functional Theory B3LYP with6-31 +g(d,p)basis.

The asymmetric reactions of dichloromethane and diiodomethane with (3Z,2S) pentan-3-enyl-2-ol catalyzed by zinc are studied by means of the density functional theory.