The dynamic amplification factor plays a vital role in the design of masonry structures under action of dynamic forces causing high strain rate loading. Therefore, the study is aimed to predict the dynamic amplification factor through numerical investigations. The finite element simulations have been performed using micro modelling approach on ABAQUS/Explicit commercial finite element software. The Drucker- Prager model and surface cohesive model were used to predict the dynamic amplification factor and toughness of the clay brick masonry assemblage. The response in terms of stress and strain on compression as well as flexural assemblage were predicted and verified with the experimental results available in literature. Further, the influence of strain rate on compression brick masonry assemblage was studied under varying strain rate in terms of stress, strain and deformations. It was observed that the predicted results were found in good agreement with the experimental results for both compression and flexural assemblage. Also, it was observed that for 1 s⁻¹ strain rate, the increment in toughness was found to be insignificant, i.e. 17%, however the toughness was found to increase by 76% and 150% for 100 and 200 s⁻¹ strain rate respectively, compare to the 4.1 × 10⁻⁵ s⁻¹ strain rate. It was also suggested that the finite element model proves very useful in light of identifying the dynamic amplification factor as it is an essential parameter required for designing the structure under high rate of loading.

在引起高应变率载荷的动力作用下，动态放大系数在砌体结构设计中起着至关重要的作用。因此，本研究旨在通过数值研究来预测动态放大因子。有限元模拟已经在ABAQUS / Explicit商业有限元软件上使用微建模方法进行了。使用Drucker-Prager模型和表面内聚模型来预测粘土砖砌体组合的动力放大系数和韧性。可以预测和验证应力和应变对压缩以及挠曲组装的响应，并通过文献中提供的实验结果进行了验证。进一步，研究了在应变率，应力和变形变化的情况下，应变率对压缩砖砌体构件的影响。观察到的预测结果与压缩和挠曲组装的实验结果非常吻合。另外，观察到1 s^-1的应变速率，在韧性增量被发现是微不足道的，即17％，但是韧性被发现的100个200秒76％和150％，以增加^-1的应变速率分别比较到4.1×10 ^{- 5}  s ^-1应变率。有人还提出，有限元模型对于确定动态放大因子非常有用，因为它是设计高荷载率结构时必不可少的参数。