显示动力学分析——跌落冲击有限元分析如何定义材料的参数？ 100

模型建立之初，定义了Gernal Contact,以及各部件的接触。定义 了跌落接触时的速度，分析时间。选择显示分析。材料为橡胶，选择的是超弹性Yeoh模型，并将D1设置在了合适的Warning提示的范围。

结果还是出现错误，如下：

问题：

1. Node 1 instance dadi-1 is used as a reference node for more than one rigid body property definition. Each rigid body property definition must have a unique reference node

2. D1 FOR HYPERELASTIC MATERIAL IS TOO SMALL. THIS LEADS TO A VERY HIGH BULK MODULUS. A SUGGESTED VALUE FOR D1 IS BETWEEN 1.46263E-02 AND 3.65657E-02. D2, D3...etc ARE SUGGESTED TO BE SCALED PROPORTIONALLY IF THEY ARE NON-ZERO. ANALYSIS USING SINGLE PRECISION MAY RESULT IN A NOISY SOLUTION. IT IS THEREFORE RECOMMENDED THAT THE ANALYSIS BE RUN IN DOUBLE PRECISION.

D1 FOR HYPERELASTIC MATERIAL IS TOO SMALL. THIS LEADS TO A VERY HIGH BULK MODULUS. A SUGGESTED VALUE FOR D1 IS BETWEEN 1.11496E-02 AND 2.78741E-02. D2, D3...etc ARE SUGGESTED TO BE SCALED PROPORTIONALLY IF THEY ARE NON-ZERO. ANALYSIS USING SINGLE PRECISION MAY RESULT IN A NOISY SOLUTION. IT IS THEREFORE RECOMMENDED THAT THE ANALYSIS BE RUN IN DOUBLE PRECISION.

D1 FOR HYPERELASTIC MATERIAL IS TOO SMALL. THIS LEADS TO A VERY HIGH BULK MODULUS. A SUGGESTED VALUE FOR D1 IS BETWEEN 2.84793E-02 AND 7.11983E-02. D2, D3...etc ARE SUGGESTED TO BE SCALED PROPORTIONALLY IF THEY ARE NON-ZERO. ANALYSIS USING SINGLE PRECISION MAY RESULT IN A NOISY SOLUTION. IT IS THEREFORE RECOMMENDED THAT THE ANALYSIS BE RUN IN DOUBLE PRECISION.

3.像法兰是否需要施加质量，即inertia，需要定义什么样的惯性力。

想问问各位怎么解决这个问题。