HPD

说明：  赤平投影软件 赤平投影安装时间为2010年7月26日。 试用期（一个月）过后，需将系统时间更改为上次安装时间方可继续使用该程序。(The LISP program. The installation time of stereographic projection is July 26, 2010. After the probation period (one month), you need to change the system time to the last installation time before you can continue to use the program.)

说明：  autoform最全材料库，包含各类材料的详细参数及使用说明。(AutoForm is the most complete material library, including detailed parameters and instructions of various materials.)

可利用八节点有限单元进行力学分析，荷载形式可以为点荷载或均布荷载等形式(This code can be used for mechanical analysis of eight-node quadrilateral element, and it is suitable for various load forms such as concentrated load, uniform load and so on.)

说明：  该文档为双块式无砟轨道建模命令流，该命令可用于ansys平台运行(This document is the command flow for modeling the double block ballastless track)

说明：  ansys命令流,主要为土木工程相关实例的APDL语言，教程详细(Ansys command stream, mainly for the APDL language of civil engineering related examples, tutorial details)

精细积分法Matlab程序，利用该程序对动力系统的微分方程精细求解。(The program of precise integration method MATLAB is used to solve the differential equation of dynamic system precisely.)

说明：  张拉膜结构非线性有限元法找形程序，采用ANSYS APDL语言编制，附带详细注释(Non-linear Finite Element Method (FEM) finding program for tensioned membrane structures, wrote by ANSYS APDL with detailed comments.)

说明：  模拟金属材料单向压缩过程，用abaqus模拟压缩过程的例子，该非常适合abaqus的初学者(Simulating Unidirectional Compression Process of Metal Materials)

39节点系统稳态和暂态运算的bpa源代码(BPA power flow calculation code for 39-node system)

说明：  求振动信号功率谱的两种代码，一种周期法，一种AR_pyuler法，支持Excel和text读取(Two codes for calculating the power spectrum of vibration signal)