平面梁单元的温度应力

Temperature stress of plane beam unit

介绍了能量原理在结构矩阵分析方面的原理及应用。以虚位移原理为理论依据,采用MATLAB符号运算的方法,分析了平面梁单元在荷载及温度变化影响下的单元刚度矩阵。计算表明:该方法在形成和求解由平面梁单元组成的工程结构时,具有较大的速度优势及良好的程序可读性。

The principle of energy method and its applcation in structure matrix analysis are introduced in this paper and based on the virtaul work principle,the unit stiffness matrix of a plane beam unit under load and temperature variation is analysed using the method of MATLAB symbol operation.The calculation result shows that the method has a great speed advatange and a good program readability in forming and solving an engineering structure composed of plane beam units.