geometric nonlinearity

Non-linear bending behaviors of a three-dimensional reticulated spherical shallow shell with double layer and geometric nonlinearity subjected to uniform loading are investigated.

本文研究三向网格浅球面网壳，在均布载荷作用下几何非线性的弯曲问题。

The geometric nonlinearity of struction is considered with the actual situation of the bridge. Thirdly, the Midas/ Civil and TDV finite element model of this structure is established, and the first kind buckling problem is calculated and analyzed.

结合背景桥梁的实际情况，主要考虑结构的几何非线性。再次，建立结构的Midas/Civil和TDV有限元模型，计算分析桥梁的一类稳定问题。

Based on the Piston Theory of supersonic aerodynamics and the theory of thin shell with geometric nonlinearity, the aeroelasticity flutter equations of the thin shell in axial supersonic airflow are established in order to analyze the nonlinear flutter responses of the aeroelastic system.

为研究高速飞行薄壳的气动弹性非线性颤振响应，本文基于超音速气动力活塞理论和大变形几何非线性理论，建立了薄壳大挠度气动弹性颤振方程。

Keywords: geometric nonlinearity, sag effect, equivalent modulus of elasticity, vehicle-bridge interaction.

关键词: 几何非线性 、 中垂效应 、 等效弹性系数 、 车桥互制.

Geometric nonlinearity adopt total lagrangian formulation, deduce double nonlinearity stability control equations of initial geometrical imperfections catenary arch, with corresponding programs complied in Matlab.

几何非线性采用总体拉格朗日列式法，在此基础上引入材料非线性的影响推导了初始几何缺陷悬链线拱的双重非线性稳定承载力控制方程。用Matlab编程进行了计算分析。

The anomalous dynamic response results from the coupling of geometric nonlinearity, material nonlinearity, elastic effects and the irrecoverable feature of the plastic deformation.

这一现象是几何与材料两种非线性相互作用的结果。

By using an incremental approach, the problems involving material or geometric nonlinearity have been solved.

借应用一种增量方法, 已经解决了包括材料的或几何的非线性问题.

Effect of Geometric Nonlinearity on the Critical Time of Creep Buckling for a Compressed Column

几何非线性对压杆蠕变屈曲临界时间的影响

Tangent stiffness matrix for spatial concrete filled steel tubular ( CFST) pole element of geometric nonlinearity coupled with material nonlinearity under large displacement and large strain which was deduced with co-rotational coordinate method was proposed.

采用共旋坐标法导出钢管混凝土杆单元在大位移、大应变条件下的空间几何、材料非线性耦合的单元切线刚度矩阵；