| 1. | Shape - finding of cable net and membrane structures by force density method
索和膜结构的力密度法找形分析 |
| 2. | Lateral force density
横力密度 |
| 3. | The force density method and the nonlinear finite element method are used together to do form - finding analysis of the membrane structures
采用力密度方法和几何非线性有限元方法联合求解已知预应力分布求解几何的形态分析。 |
| 4. | For form - finding of membrane structures , the common methods mainly indued three theory : nonliner fem , dynamic relaxation method and force density method
对于索膜找形分析，目前普遍常用的是非线形有限元法、动力松弛法和力密度法。 |
| 5. | We will introduce nonlinear initial method , stress density method and dynamic relaxation method which are the most popular methods in our country
该文介绍的非线性有限元分析方法，力密度法以及动力松弛法都是国内外较为常用的张拉膜结构设计方法。 |
| 6. | ( 2 ) the theory of the form - finding analysis of the cable - membrane structure with the force density method is deduced explicitly and corresponding formulae are obtained
( 2 )对应用国际上比较流行的力密度法对索膜结构进行找形分析的问题进行了一系列的理论推导，得出了相关的公式。 |
| 7. | According to that , the calculation program of the form - finding analysis of cable - membrane structures using the force density method is composed on the platform of digital visual fortran 5 . 0
并且，根据理论推导的结果，应用digitalvisualfortran5 . 0编制了对索膜结构进行找形分析的力密度法计算程序。 |
| 8. | The essential problem is expounded as the form - finding analysis of a slack cable - strut system of with comperents loose lengths and under geometrically unstable equilibrium state maintained by its deadweight with given loose lengths of components
根据力密度法的思想，本文提出了一种松弛索杆体系几何非稳定平衡形态的通用找形方法。 |
| 9. | Two approaches of dispersion with force density method in form finding of cable and membrane are derived in this thesis . programs are compiled based on the theory the joillting must guarantee the smoothly transfer of stress
用力密度法找形的一个关键问题是如何将膜片离散，本文推导了两种离散方法运用于力密度找形分析中，并编制了计算程序。 |
| 10. | In this paper , the author analyses the essence of these methods and find the problem in them . then we introduce a new method , " the surface stress density method " . then we validate the validity and practicability of this new method
本文通过对已有方法的内核的分析，发现存在的问题，针对这些缺陷，本文阐述了一种新的方法，即面力密度方法，通过算例验证了面力密度法的有效性和实用性。 |
