8节点等参单元fortran.zip abaya\Newmark.for.txt .....\含编号文件名生成程序(fortran).txt .....\平面应力单元.txt .....\平面杆单元.txt .....\平面梁(柱)单元.txt .....\平面质点单元.txt .....\弹簧阻尼单元.txt .....\概述.txt .....\空间杆单元.txt .....\空间梁(柱)单元.txt .....\空间管单元.txt .....\空间质点单元.txt .....\精细时程积分FORTRAN源程序.txt .....\线弹性动力分析直接积分NEWMARK BETA.txt .....\结语.txt abaya