摘要
本文提出了结构动力学方程求解的一类二次加速度逐步积分法，推导了计算公式，分析了积分稳定性和精度。通过理论分析和具体算例表明，这种方法具有相当高的积分精度，但积分是条件稳定的。
The paper presents a kind of quadratic acceleration step by step integration methods,dirives the calculation formalas,and analysis integration stability and exactness.It is indicat-ed through theoretical analysis and practice example that these methods have very high inte-gration exactness,but integrations are conditioned stable.
关键词
结构动力学
逐步积分法
二次加速度法
structural dynamics/step by step integration method
quadratic accelaration method
