adams离散数据导入的说明[共4页]

1、由已知离散数据生成曲线：新建*.csv文件，需要两行。一行为横坐标，一行为纵坐标，二者顺序可以变化。在后处理中导入*.csv文件，并画出曲线。通过这条曲线生成spline(点击spline按钮)。上图是生成的曲线，下图是通过曲线生成的样条曲线。进入前处理，在需要定义的motion/force上施加样条函数（图中abb即为曲线生成的样条）由已知曲线生成样条：1、直接在后处理中画出measrue曲线，然后利用spline转化为需要输入的曲线（在这里我还不知道如何得到函数表达式，但是可以有曲线，就可以有输入了）应该有下图中的警告。2、在database navigator 中可以找到这个spline

2、_1。3、比如要成为时间的函数施加到motion 或者force上，可见下图。这样运动就定义了。三种样条函数的定义区别Example A spline, spline_1, is defined with discrete data as shown in thefollowing table. The data is then used to generate the interpolationfunction using the Cubic spline fitting method. Since the spline definesa curve rather than a surfac

3、e, the Second Independent Variable must beset to 0.The following example returns the interpolated value of the spline ofdisplacement over time, to define a motion function:Motion = CUBSPL(TIME, 0, spline_1)Example The following function returns the x direction evaluated value ofcurve_1 at point TIME

4、, where TIME is the current simulation time:CURVE(TIME, 0, 1, curve_1)Example A spline, spline_1, is defined with discrete data as shown in thefollowing table. The data is then used to generate the interpolationfunction using the Akima spline fitting method. Since the splinedefines a curve rather than a surface, the Second Independent Variablemust be set to 0.In the following example, given the tabular data and a value for theindependent variable, the AKISPL returns the interpolated value for thedep