Abstract We present results from numerical simulations of the DART impact using the CTH shock physics code with 2D homogenous asteroid models. A design of experiments approach was used to create a run matrix of 28 simulations varying 17 different material model inputs for the impactor and target. The resulting values of the momentum transfer efficiency factor β and the crater width and depth were analyzed to determine the relative sensitivity of each parameter for predicting the DART impact outcome. We found that β and crater width/depth ratio are primarily influenced by a small number of material model input parameters, a result which greatly reduces the parameter space required for more expensive 3D simulations.

中文翻译：

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双小行星重定向测试 (DART) 任务的影响建模

摘要 我们展示了使用 CTH 冲击物理代码和 2D 同质小行星模型对 DART 撞击进行数值模拟的结果。实验设计方法用于创建由 28 次模拟组成的运行矩阵，这些模拟改变了撞击器和目标的 17 种不同材料模型输入。分析了动量传递效率因子 β 和陨石坑宽度和深度的结果值，以确定每个参数的相对灵敏度，用于预测 DART 撞击结果。我们发现 β 和陨石坑宽度/深度比主要受少量材料模型输入参数的影响，结果大大减少了更昂贵的 3D 模拟所需的参数空间。