变截面构件临界压力的工程实用计算法

摘要

根据变截面构件截面的变化规律,基于势能驻值原理,利用能量法推导出了变截面构件临界压力的计算公式.将本文方法的计算结果与有限元方法的计算结果进行了比较,结果证明本文方法的计算精度较高,且本文方法计算简便,易于被工程设计人员掌握.%According to the variation regularity of component with variable section, the calculation formulas for critical pressure of component with variable section were derived by the condition of stationary value potential energy based on energy method, and comprised of results from the suggested method with ANSYS. The example calculation proved the high calculation accuracy of the suggested method, and the suggested method got a simple calculation to be easily mastered by engineers.