To avoid reduction of critical time step size due to the penalty parameter for contact force calculation, a local density factor is introduced.
为避免用于计算接触力的罚函数法中的罚因子影响显式仿真算法的稳定性 ，采用了局部质量密度因子来抵消罚因子的负面影响。
A remarkable advantage of the proposed method is that the Courant stability condition can be totally removed, and the time step size is limited only by the numerical dispersion errors.
但时间步长不再受稳定性条件的限制，只需考虑数值色散误差对其取值的制约。
In comparison with other distributed parameter models, the calculation result of this model has showed that it has a quality of higher precision with numerical stability even at a big time step size.
与其他分布参数模型的处理方法相比较，该文的仿真方法不仅具有较高的运算精度，而且在较大的时间步长下也有非常好的数值稳定性。
From the result we found that the predictability time is not only depend on initial error but also sensitive to the precision and the time step-size used in the computation.
实验结果表明：动力系统的预报时效不仅与初值误差有关，而且在一定条件下敏感地依赖于计算采用的时间步长和计算精度。
Numerical simulation shows that the time-step size can be set 100 times as large as that of the conventional FDTD method, while the C-N FDTD algorithm is still unconditionally stable.
算例也表明了当时间步长取为常规FDTD时间步长100倍时，该算法仍然是无条件稳定的。
Numerical simulation shows that the time-step size can be set 100 times as large as that of the conventional FDTD method, while the C-N FDTD algorithm is still unconditionally stable.
算例也表明了当时间步长取为常规FDTD时间步长100倍时，该算法仍然是无条件稳定的。
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