SAP5源程序中一处错误的更正

AN ERROR CORRECTION IN ORIGINAL PROGRAM SAP

本文指出了ＳＡＰ５源程序中的一处错误，该错误会影响某些非线性振动计算的结果；给出了在源程序中改正错误的方法，对ＳＡＰＳ的应用有实用意义。

Program SAP 5 has been widely used in calculation of vibration in ship structure.Some users and researchers have spotted and revised some errors in the original program since it was introduced in China in 1980. In the original program SAP 5, an error so far unnoticed which may have influence on calculations of geometrically non-linear vibrations is pointed out by the authors. The cause of the error is theoretically analysed in the paper and the remedied procedure is given. All these are of great significance to the utilization and development of the program SAP 5.