本程序采用平面梁单元计算两铰抛物线拱的自由振动特性，希望对学习有限元及程序设计有帮助。-The program uses two hinged planar beam element calculation of the free vibration characteristics of the parabolic arch, the finite element and want to learn programming help.

《有限元方法编程 第三版》Fortran程序，P58 使用20节点块单元的三维空间问题分析，调试通过。-<Programming the Finite Element Method 3th> program 5.8 three dimensional analysis of an elastic solid using uniform 20-node hexahedral brick elements.

本书详细介绍了三个专用有限元程序设计的全部过程。可供工程，应用力学，应用数学，计算机科学等专业的科学工作者和学生参考使用(Finite Element Programming E.Hinton D.R.I.Owen This book describes the whole design process of three special finite element programs.)