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On the Selection of the Loads in a Multistep Time Integration Method

机译:多步时间积分法中荷载的选择

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摘要

In multistep time integration methods, it is crucial to select appropriate loads within time-steps for reliable and accurate finite element solutions. The objective of this study is to find a strategy for optimal usage of the multistep time integration scheme for effective and reliable solutions of a system under any kind of loading. By inspecting the resulting numerical impulse of the scheme, we propose a load selection strategy that significantly improves the solutions for smooth loading, and maintains its superior accuracy and stability characteristics in the case of severe loading.
机译:在多步时间积分方法中,至关重要的是在时间步长内选择适当的载荷,以获得可靠而准确的有限元解决方案。这项研究的目的是找到一种策略,可以在各种负载下有效利用多步时间积分方案,以实现有效有效的系统解决方案。通过检查该方案产生的数值脉冲,我们提出了一种负载选择策略,该策略可以显着改善平滑负载的解决方案,并在严重负载的情况下保持其卓越的精度和稳定性。

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