subroutine fric

该程序可进行2D和3D恒定流分析，程序中对矩阵含义和比较难理解的部分进行了简要说明(The program can be used for 2 D and 3 D constant flow analysis. The meaning of matrix and the parts that are difficult to understand are briefly explained in the program)

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)

说明：  离散元程序PFC中的一个小案例-结构动力模拟，能够模拟地震作用下，结构的动力响应(DYNAMIC SIMULATION OF DISCRETE ELEMENT PFC STRUCTURES)

说明：  ABAQUS摩擦系数子程序，可以用于数值计算(ABAQUS friction coefficient subroutine)

可以用该程序进行多自由度结构的地震控制计算(Earthquake control calculation of structures)

说明：  梯形断面明槽水面曲线计算源程序,输入数据即可自动计算结果(Calculation of Water Surface Curve of Trapezoidal Section Open Channel)

说明：  ansys命令流，计算由于振动引起的高层建筑物的表面振动加速度，不过激励是施加在土体上的(ANSYS command flow is used to calculate the surface vibration acceleration of high-rise buildings caused by vibration, but the excitation is applied to the soil)

说明：  SPI计算程序，标准降水指数的计算，利用将降雨资料可以求得。(Spi calculation program, calculation of standard precipitation index, can be obtained by using rainfall data.)

采用初始应力法进行被动土压力分析，程序中对相关矩阵及每一步的意义进行了简要说明(The code uses the initial stress method to analyze the passive earth pressure. The relevant matrix and the significance of each step are briefly explained in the program.)

说明：  abaqus VUMAT子程序,用于复合材料hashin-3D失效准则，只能用于abaqus/explici求解器(subroutine for abaqus/explicit)