本文给出了一种从额外维度模型出发，通过边界条件的定义建立对称破缺机制的简单方法。
This article shows up a simple method of symmetry breaking mechanism which embark from the extra dimensional model and through boundary condition definition.
在二维导热模型的基础上，添加等热流、绝热边界条件，用Fortran语言编写数值计算程序进行计算，定义了相对误差。
Program was written in FORTRAN, basing on twodimensional heat conduction and adiabatic, constant heat flux boundary conditions. The relative error is defined.
详细介绍了有限元模型的建立，材料参数、边界条件及载荷的定义。
The construction of FEM model, material parameters, boundary conditions and loading definition are introduced in details.
在两端简支的边界条件下采用分离变量法求解偏微分方程，得到用级数表示的应力解，然后根据剪力滞系数的定义即可得到组合箱梁翼板的剪力滞系数。
Separation of variables is employed to solve the differential equation under the boundary condition of two ends of the girder being simply supported, and the solution of stress is…
在两端简支的边界条件下采用分离变量法求解偏微分方程 ，得到用级数表示的应力解 ，然后根据剪力滞系数的定义即可得到组合箱梁翼板的剪力滞系数。
On the basis of mathematical statistic, using the method of multiple regression analysis, the practical calculating formula of the shear lag coefficient in thin-walled curved box girders is derived.
在两端简支的边界条件下采用分离变量法求解偏微分方程 ，得到用级数表示的应力解 ，然后根据剪力滞系数的定义即可得到组合箱梁翼板的剪力滞系数。
On the basis of mathematical statistic, using the method of multiple regression analysis, the practical calculating formula of the shear lag coefficient in thin-walled curved box girders is derived.
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